//
-// Thunder: A Rolling Thunder Emulator w/6809 debugger
+// Thunder: A Rolling Thunder Emulator
//
-// by James L. Hammons
-// (c) 2004, 2009 Underground Software
+// by James Hammons
+// (C) 2004, 2023 Underground Software
//
-// JLH = James L. Hammons <jlhamm@acm.org>
+// JLH = James Hammons <jlhamm@acm.org>
//
// WHO WHEN WHAT
-// --- ---------- ------------------------------------------------------------
+// --- ---------- -----------------------------------------------------------
// JLH 07/23/2009 Added changelog ;-)
+// JLH 08/12/2009 Stabilized emulation so that it works
+// JLH 04/04/2014 Converted to SDL 2
+// JLH 04/17/2014 Removed a metric fuck-tonne of cruft, added YM2151 & MCU
+// JLH 01/13/2023 Finally fixed the sprite lag problem :-D
+// JLH 01/13/2023 Added save states
//
-#define THUNDER_VERSION "0.9.9"
+#define THUNDER_VERSION "1.2.2"
-#include <iostream>
-#include <iomanip>
-#include <fstream>
+#include <SDL2/SDL.h>
#include <string>
-#include <new>
-#include <stdio.h>
#include <stdlib.h>
-//#include <conio.h> // For getch()
-#include <curses.h> // For getch()
#include <time.h>
-#include "SDL.h" // Get yer SDL out...!
-#include "types.h"
-#include "v6809.h"
-#include "screen.h"
+#include "fileio.h"
#include "gui.h"
#include "log.h"
+#include "psg.h"
+#include "screen.h"
+#include "sound.h"
+#include "v63701.h"
+#include "v6809.h"
+#include "video.h"
+#include "ym2151.h"
-using namespace std; // Yes!
-
-#if 0
-#define ROM1 "RT3-1B.ROM"
-#define ROM2 "RT3-2B.ROM"
-#define ROM3 "RT3-3.ROM"
-#define ROM4 "RT3-4.ROM"
-#define ROM5 "RT1-5.ROM"
-#define ROM6 "RT1-6.ROM"
-#define ROM7 "RT1-7.ROM"
-#define ROM8 "RT1-8.ROM"
-#define ROM9 "RT1-9.ROM"
-#define ROM10 "RT1-10.ROM"
-#define ROM11 "RT1-11.ROM"
-#define ROM12 "RT1-12.ROM"
-#define ROM13 "RT1-13.ROM"
-#define ROM14 "RT1-14.ROM"
-#define ROM15 "RT1-15.ROM"
-#define ROM16 "RT1-16.ROM"
-#define ROM17 "RT1-17.ROM"
-#define ROM18 "RT1-18.ROM"
-#define ROM19 "RT3-19.ROM"
-#define ROM20 "RT3-20.ROM"
-#define ROM21 "RT1-21.ROM"
-#define ROM22 "RT2-22.ROM"
-#define PROM1 "RT1-1.BIN"
-#define PROM2 "RT1-2.BIN"
-#define PROM3 "RT1-3.BIN"
-#define PROM4 "RT1-4.BIN"
-#define PROM5 "RT1-5.BIN"
-#else
#define ROM1 "rt3-1b.9c"
#define ROM2 "rt3-2b.12c"
#define ROM3 "rt3-3.12d"
#define PROM4 "mb7138h.6v"
#define PROM5 "mb7112e.6u"
#define MCUROM "rt1-mcu.bin"
-#endif
// Global defines
-SDL_Surface * screen;
-
-uint8 * gram, * grom; // Allocate RAM & ROM pointers
-uint8 gram1[0x10000], gram2[0x10000], grom1[0x10000], grom2[0x10000]; // Actual memory
-uint8 grom3[0x8000], grom4[0x8000], data_rom[0x40000], spr_rom[0x80000], voice_rom[0x20000];
-uint8 chr_rom[0x60000]; // Character ROM pointer
+uint8_t gram1[0x10000], grom1[0x10000], grom2[0x10000];
+uint8_t grom3[0x8000], data_rom[0x40000], spr_rom[0x80000], voice_rom[0x20000];
+uint8_t charROM[0x60000]; // Character ROM
+uint8_t mcuMem[0x10000]; // 64K for MCU
+// CPU execution contexts
V6809REGS cpu1, cpu2;
+V63701REGS mcu;
-bool trace1 = false; // ditto...
-bool looking_at_rom = true; // true = R1, false = R2
-uint32 banksw1, banksw2; // Bank switch addresses
-uint16 game_over_switch; // Game over delay
-uint16 dpc; // Debug pc reg...
-bool show_scr = true; // Whether or not to show background
-bool enable_cpu = true; // Whether or not to enable CPUs
-bool irqGoA = true; // IRQ switch for CPU #1
-bool irqGoB = true; // IRQ switch for CPU #2
-
-uint16 refresh_ = 0; // Crappy global screen stuff...
-bool refresh2 = true;
-
-uint32 psg_lens[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-uint8 * psg_adrs[16];
-uint32 voc_lens[32] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-uint8 * voc_adrs[32];
-uint32 fm_lens[14] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-uint8 * fm_adrs[14];
-
-fstream tr; // Tracelog hook
-uint16 pcx; // Where we at?
-
-static uint8 * keys; // SDL raw keyboard matrix
-
-static char op_mat1[256] = {
- 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1,
- 0, 0, 5, 5, 0, 0, 4, 4, 0, 5, 8, 0, 8, 5, 6, 6,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 7, 7, 7, 7, 6, 6, 6, 6, 0, 5, 5, 5, 8, 5, 5, 5,
- 5, 0, 0, 5, 5, 0, 5, 5, 5, 5, 5, 0, 5, 5, 0, 5,
- 5, 0, 0, 5, 5, 0, 5, 5, 5, 5, 5, 0, 5, 5, 0, 5,
- 7, 0, 0, 7, 7, 0, 7, 7, 7, 7, 7, 0, 7, 7, 7, 7,
- 2, 0, 0, 2, 2, 0, 2, 2, 2, 2, 2, 0, 2, 2, 2, 2,
- 8, 8, 8, 9, 8, 8, 8, 0, 8, 8, 8, 8, 9, 3, 9, 0,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 8, 8, 8, 9, 8, 8, 8, 0, 8, 8, 8, 8, 9, 0, 9, 0,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
-op_mat2[256] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 9, 0,
- 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1,
- 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 7, 7,
- 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 2,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 7,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2 },
-op_mat3[256] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0,
- 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
- 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0,
- 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-static char mnemonics[256][6] = {
- "NEG ","??? ","??? ","COM ","LSR ","??? ","ROR ","ASR ",
- "LSL ","ROL ","DEC ","??? ","INC ","TST ","JMP ","CLR ",
- "PAGE1","PAGE2","NOP ","SYNC ","??? ","??? ","LBRA ","LBSR ",
- "??? ","DAA ","ORCC ","??? ","ANDCC","SEX ","EXG ","TFR ",
- "BRA ","BRN ","BHI ","BLS ","BHS ","BLO ","BNE ","BEQ ",
- "BVC ","BVS ","BPL ","BMI ","BGE ","BLT ","BGT ","BLE ",
- "LEAX ","LEAY ","LEAS ","LEAU ","PSHS ","PULS ","PSHU ","PULU ",
- "??? ","RTS ","ABX ","RTI ","CWAI ","MUL ","RESET","SWI ",
- "NEGA ","??? ","??? ","COMA ","LSRA ","??? ","RORA ","ASRA ",
- "LSLA ","ROLA ","DECA ","??? ","INCA ","TSTA ","??? ","CLRA ",
- "NEGB ","??? ","??? ","COMB ","LSRB ","??? ","RORB ","ASRB ",
- "LSLB ","ROLB ","DECB ","??? ","INCB ","TSTB ","??? ","CLRB ",
- "NEG ","??? ","??? ","COM ","LSR ","??? ","ROR ","ASR ",
- "LSL ","ROL ","DEC ","??? ","INC ","TST ","JMP ","CLR ",
- "NEG ","??? ","??? ","COM ","LSR ","??? ","ROR ","ASR ",
- "LSL ","ROL ","DEC ","??? ","INC ","TST ","JMP ","CLR ",
- "SUBA ","CMPA ","SCBA ","SUBD ","ANDA ","BITA ","LDA ","??? ",
- "EORA ","ADCA ","ORA ","ADDA ","CMPX ","BSR ","LDX ","??? ",
- "SUBA ","CMPA ","SBCA ","SUBD ","ANDA ","BITA ","LDA ","STA ",
- "EORA ","ADCA ","ORA ","ADDA ","CMPX ","JSR ","LDX ","STX ",
- "SUBA ","CMPA ","SBCA ","SUBD ","ANDA ","BITA ","LDA ","STA ",
- "EORA ","ADCA ","ORA ","ADDA ","CMPX ","JSR ","LDX ","STX ",
- "SUBA ","CMPA ","SBCA ","SUBD ","ANDA ","BITA ","LDA ","STA ",
- "EORA ","ADCA ","ORA ","ADDA ","CMPX ","JSR ","LDX ","STX ",
- "SUBB ","CMPB ","SCBB ","ADDD ","ANDB ","BITB ","LDB ","??? ",
- "EORB ","ADCB ","ORB ","ADDB ","LDD ","??? ","LDU ","??? ",
- "SUBB ","CMPB ","SBCB ","ADDD ","ANDB ","BITB ","LDB ","STB ",
- "EORB ","ADCB ","ORB ","ADDB ","LDD ","STD ","LDU ","STU ",
- "SUBB ","CMPB ","SBCB ","ADDD ","ANDB ","BITB ","LDB ","STB ",
- "EORB ","ADCB ","ORB ","ADDB ","LDD ","STD ","LDU ","STU ",
- "SUBB ","CMPB ","SBCB ","ADDD ","ANDB ","BITB ","LDB ","STB ",
- "EORB ","ADCB ","ORB ","ADDB ","LDD ","STD ","LDU ","STU " },
-mnemonics2[256][6] = {
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","LBRN ","LBHI ","LBLS ","LBHS ","LBLO ","LBNE ","LBEQ ",
- "LBVC ","LBVS ","LBPL ","LBMI ","LBGE ","LBLT ","LBGT ","LBLE ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","SWI2 ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","CMPD ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPY ","??? ","LDY ","??? ",
- "??? ","??? ","??? ","CMPD ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPY ","??? ","LDY ","STY ",
- "??? ","??? ","??? ","CMPD ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPY ","??? ","LDY ","STY ",
- "??? ","??? ","??? ","CMPD ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPY ","??? ","LDY ","STY ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","LDS ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","LDS ","STS ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","LDS ","STS ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","LDS ","STS " },
-mnemonics3[256][6] = {
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","SWI3 ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","CMPU ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPS ","??? ","??? ","??? ",
- "??? ","??? ","??? ","CMPU ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPS ","??? ","??? ","??? ",
- "??? ","??? ","??? ","CMPU ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPS ","??? ","??? ","??? ",
- "??? ","??? ","??? ","CMPU ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","CMPS ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? ",
- "??? ","??? ","??? ","??? ","??? ","??? ","??? ","??? " },
-tregs[16][3] = {
- "D", "X", "Y", "U", "S", "PC", "??", "??",
- "A", "B", "CC", "DP", "??", "??", "??", "??" },
-iregs[4][2] = {"X", "Y", "U", "S" };
+// Bank switch addresses
+uint32_t banksw1, banksw2;
+
+// MCU inputs
+Byte input1, input2, input3, input4, input5;
+
+// Miscellaneous stuff
+bool copySprites = false;
+const uint8_t stateHeader[20] = "THUNDERSAVESTATE1.0";
+
+// Function prototypes
+uint8_t MCUReadMemory(uint16_t address);
+void MCUWriteMemory(uint16_t address, uint8_t data);
//
-// Read a byte from memory (without touching PC. Not a Fetch!)
+// Read a byte from memory
//
-uint8 RdMem(uint16 addr)
+uint8_t MainReadMemory(uint16_t addr)
{
- uint8 b;
-
- // $4000-4300 is RAM shared with the microcontroller...
+ uint8_t b;
if (addr < 0x8000)
{
- if (addr > 0x5FFF)
- b = data_rom[banksw1 + (addr - 0x6000)]; // Get char data
- else
- b = gram1[addr];
+ // Memory shared with MCU (CPU #1 only! CPU #2 does not)
+ if ((addr >= 0x4000) && (addr <= 0x43FF))
+ return mcuMem[addr - 0x3000];
+
+ if (addr >= 0x6000)
+ return data_rom[banksw1 + (addr - 0x6000)]; // Get char data
+
+ return gram1[addr];
}
- else
- b = grom1[addr];
- return b;
+ return grom1[addr];
}
//
// Write a byte to memory
//
-void WrMem(uint16 addr, uint8 b)
+void MainWriteMemory(uint16_t address, uint8_t data)
{
- extern bool disasm;
- extern bool charbase; // Needed for screen. Extern it in it??
- //extern uint16 sr, ur, xr, yr; // Needed for tracelog
- //extern uint16 pcr;
-/* if ((addr>0x40FF) && (addr<0x4390))
- {
- tr << hex << addr << ":" << (int)b;
- //for(int i=0; i<32; i++)
- //{
- // if (gram1[0x4400+i]<0x10) tr << "0";
- // tr << hex << (uint16)gram1[0x4400+i] << " ";
- //}
- tr << endl;
- }//*/
-#if 1
- if (addr == 0x4182)
- {
- WriteLog("\nWriteMem: CPU #1 writing $%02X to $4182!\n\n", b);
- }
-#endif
-
- if (addr == 0x6000)
- SpawnSound(GAMESOUND, gram1[0x6200], 0); // Do voice chan 1
- if (addr == 0x6400)
- SpawnSound(GAMESOUND, gram1[0x6600], 1); // Do voice chan 2
- if (addr == 0x6800)
- banksw1 = (uint32)b << 13; // Set char data bankswitch base address
- if (addr > 0x4284 && addr < 0x42A5 && b)
- SpawnSound(PSGSOUND, addr - 0x4285); // Do PSG sound on chans 2, 3
- if (addr == 0x4380)
- {
- SpawnSound(FMSOUND, b); // Do FM sound on channel 4
- if (b == 12)
- game_over_switch = 240; // Set game over delay...
- }
- if (addr < 0x423D || addr > 0x425C) // Protect writes to DSWs
- gram1[addr] = b;
- if (addr == 0x8800)
- charbase = false; // Char banksw1
- if (addr == 0x8C00)
- charbase = true; // Char banksw2
- if (addr == 0x8400) // Frame go strobe? VBlank acknowledge?
- {
- if (refresh_++ == 1) // 30 Hz...
- {
- BlitChar(screen, chr_rom, gram1);
- refresh_ = (refresh2 ? 1 : 0); // 60/30 Hz...
- }
-//Seems they're more regular than this...
-// irqGoA = true; // Will this work??? no...
-// cpu1.cpuFlags |= V6809_ASSERT_LINE_IRQ;//wil wok???
- // IRQ Ack (may also be frame go...
-// cpu1.cpuFlags &= ~V6809_ASSERT_LINE_IRQ;
-#if 1
- if (disasm)
- WriteLog("WriteMem: CPU #1 Acknowledging IRQ...\n", b);
-#endif
- ClearLineOfCurrentV6809(V6809_ASSERT_LINE_IRQ);
- }
+ if (address == 0x6000)
+ SpawnSound(GAMESOUND, gram1[0x6200], 0); // Do voice chan 1
+ if (address == 0x6400)
+ SpawnSound(GAMESOUND, gram1[0x6600], 1); // Do voice chan 2
+ if (address == 0x6800)
+ banksw1 = (uint32_t)data << 13; // Set char data bankswitch base address
+
+ // Memory shared with MCU (CPU #1 only! CPU #2 does not)
+ if ((address >= 0x4000) && (address <= 0x43FF))
+ mcuMem[address - 0x3000] = data;
+ else
+ gram1[address] = data;
+
+ if (address == 0x5FF2)
+ copySprites = true;
+ if (address == 0x8800)
+ charBankSwitch = false; // Char banksw1
+ if (address == 0x8C00)
+ charBankSwitch = true; // Char banksw2
+ if (address == 0x8400) // Frame go strobe? VBlank acknowledge?
+ ClearLineOfCurrentV6809(V6809_LINE_IRQ); // IRQ Ack
}
//
-// Read a byte from memory (without touching PC. Not a Fetch!) (2nd processor)
+// Read a byte from memory (2nd processor)
//
-uint8 RdMemB(uint16 addr)
+uint8_t SubReadMemory(uint16_t address)
{
-// extern uint16 cpu2.s, cpu2.u, cpu2.x, cpu2.y; // Needed for tracelog
- uint8 b;
-
- if (addr < 0x8000)
+ if (address < 0x8000)
{
- if (addr < 0x2000)
- b = gram1[addr + 0x4000];
- if (addr > 0x1FFF && addr < 0x6000)
- b = gram1[addr - 0x2000];
- if (addr > 0x5FFF)
- b = grom3[banksw2 + (addr - 0x6000)]; // Correct?
+ if (address < 0x2000)
+ return gram1[address + 0x4000];
+ else if ((address >= 0x2000) && (address < 0x6000))
+ return gram1[address - 0x2000];
+ else if (address >= 0x6000)
+ return grom3[banksw2 + (address - 0x6000)];
}
- else
- b = grom2[addr];
-
-/* if ((addr>0x3FFF) && (addr<0x4400)) tr << "R-" << hex << pcx << ": "
- << addr << "-"
- << (int)looking_at_rom
- << " [" << (int)b
- << "] XR:" << xr << " YR:" << yr
- << " SR:" << sr << " UR:" << ur
- << endl; //*/
- return b;
+
+ return grom2[address];
}
//
// Write a byte to memory (2nd processor)
//
-void WrMemB(uint16 addr, uint8 b)
+void SubWriteMemory(uint16_t address, uint8_t data)
{
- extern bool disasm;
- extern bool charbase;
- //extern uint16 sr, ur, xr, yr; // Needed for tracelog
- //extern uint16 pcr;
-/* if ((addr>0x00FF) && (addr<0x0390))
- {
- tr << hex << addr << ":" << (int)b;
- //for(int i=0; i<32; i++)
- //{
- // if (gram1[0x4400+i]<0x10) tr << "0";
- // tr << hex << (uint16)gram1[0x4400+i] << " ";
- //}
- tr << endl;
- }//*/
-#if 1
- if (addr == 0x0182)
+ // Set sprite data bank switch
+ if (address == 0xD803)
+ banksw2 = (uint32_t)(data & 0x03) << 13;
+
+ if (address < 0x2000)
+ gram1[address + 0x4000] = data;
+
+ if ((address >= 0x2000) && (address < 0x6000))
+ gram1[address - 0x2000] = data;
+
+ if (address == 0x1FF2)
+ copySprites = true;
+
+ if (address == 0x8800)
+ ClearLineOfCurrentV6809(V6809_LINE_IRQ); // IRQ Ack
+}
+
+uint8_t MCUReadMemory(uint16_t address)
+{
+ if (address < 0x20)
+ return InternalRegisterRead(address);
+ else if ((address >= 0x1000) && (address <= 0x113F))
+ return ReadPSG(address - 0x1000);
+ else if ((address >= 0x2000) && (address <= 0x2001))
+ return YMReadReg(0);
+ // Various joystick + buttons; all are active low.
+ else if (address == 0x2020)
+ return input1.byte;
+ else if (address == 0x2021)
+ return input2.byte;
+ // This is DSW1 & 2. All switch settings are active low.
+ else if (address == 0x2030)
+ return input4.byte;
+ else if (address == 0x2031)
+ return input5.byte;
+
+ return mcuMem[address];
+}
+
+void MCUWriteMemory(uint16_t address, uint8_t data)
+{
+ static uint8_t ymRegister;
+
+ if (address < 0x20)
{
- WriteLog("\nWriteMem: CPU #2 writing $%02X to $0182 ($4182)!\n\n", b);
+ InternalRegisterWrite(address, data);
+ return;
}
-#endif
-
-// Bah. Dunno if this is accurate or not!
-// if (addr == 0x8800)
-// irqGoB = true; // Will it work??? no...
-// cpu2.cpuFlags |= V6809_ASSERT_LINE_IRQ;//wil wok???
- if (addr == 0x6000)
- SpawnSound(GAMESOUND, gram1[0x6200], 0); // Do voice chan 1
- if (addr == 0x6400)
- SpawnSound(GAMESOUND, gram1[0x6600], 1); // Do voice chan 2
- if (addr > 0x0284 && addr < 0x02A5 && b)
- SpawnSound(PSGSOUND, addr - 0x0285); // Do PSG sound on chans 2, 3
- if (addr == 0xD803)
- banksw2 = (uint32)(b & 0x03) << 13; // Set sprite data bank switch
- if (addr == 0x0380)
+ else if (((address >= 0x4000) && (address <= 0xBFFF))
+ || (address >= 0xF000))
+ return;
+ else if ((address >= 0x1000) && (address <= 0x113F))
{
- SpawnSound(FMSOUND, b); // Do FM sound on chan 4
- if (b == 12)
- game_over_switch = 240; // Set game over delay...
+ WritePSG(address - 0x1000, data);
+ return;
}
- if (addr < 0x023D || addr > 0x025C) // Protect writes against DSWs
+ else if (address == 0x2000)
{
- if (addr < 0x2000)
- gram1[addr + 0x4000] = b;
- if (addr > 0x1FFF && addr < 0x6000)
- gram1[addr - 0x2000] = b;
- if (addr > 0x5FFF)
- gram1[addr] = b;
+ ymRegister = data;
+ return;
}
- if (addr == 0x8800)
+ else if (address == 0x2001)
{
- // IRQ Ack (may also be frame go...)
-// cpu2.cpuFlags &= ~V6809_ASSERT_LINE_IRQ;
-#if 1
- if (disasm)
- WriteLog("WriteMem: CPU #2 Acknowledging IRQ...\n", b);
-#endif
- ClearLineOfCurrentV6809(V6809_ASSERT_LINE_IRQ);
+ YMWriteReg(0, ymRegister, data);
+ return;
}
+
+ // RAM is from $0 - $3FFF, $C000 - $EFFF
+ mcuMem[address] = data;
}
-//
-// Display bytes in mem in hex
-//
-void DisplayBytes(uint16 src, unsigned long dst)
+uint8_t V63701ReadPort1(void)
{
- uint8 cnt;
- unsigned long i;
-
- WriteLog("%04X: ", src);
- cnt = 0; // Init counter...
- if (src > dst) dst += 0x10000; // That should fix the FFFF bug...
- for(i=src; i<dst; i++)
- {
- WriteLog("%02X ", (uint8)(looking_at_rom ? RdMem(i) : RdMemB(i)));
- cnt++; // Bump counter...
- }
- for(i=cnt; i<5; i++) // Pad the leftover spaces...
- {
- WriteLog(" ");
- }
+// printf("V63701ReadPort1: Read $%02X...\n", input3.byte);
+ return input3.byte;
}
-// temp crap...
-uint8 Fetch(void) { return RdMem(dpc); }
-uint16 FetchW(void) { return (uint16)((RdMem(dpc) << 8) | RdMem(dpc+1)); }
-uint8 FetchB(void) { return RdMemB(dpc); }
-uint16 FetchWB(void) { return (uint16)((RdMemB(dpc) << 8) | RdMemB(dpc+1)); }
-
-//
-// Decode a 6809 instruction at 'addr'
-//
-void Decode_6809()
+uint8_t V63701ReadPort2(void)
{
- uint8 (* DFetch)(); // Decode Fetch() pointer...
- uint16 (* DFetchW)(); // Decode FetchW() pointer...
- DFetch = (looking_at_rom ? Fetch : FetchB);
- DFetchW = (looking_at_rom ? FetchW : FetchWB);
-
-/* extern*/ uint16 pcr, pcrB; // Pull in 'pcr' from '6809.cpp'
- uint16 pc_save = pcr, pcB_save = pcrB;
- pcr = dpc; pcrB = dpc;
- uint8 opcode = DFetch(); // Get the opcode ('fetch' cycle)
- uint8 opcode2, operand;
- uint16 loperand;
- uint8 admode = op_mat1[opcode]; // addressing mode
- char outbuf[80], mnem[6], tmp[30];
-
- strcpy(mnem, mnemonics[opcode]); // Copy page 1 opcode
- if (opcode == 0x10) // Extended opcode?
- {
- opcode2 = DFetch(); // Then get next byte
- admode = op_mat2[opcode2]; // And use it as index into 'op_mat2'
- strcpy(mnem, mnemonics2[opcode2]); // Overwrite mnemonic
- }
- if (opcode == 0x11) // Same as above...
- {
- opcode2 = DFetch();
- admode = op_mat3[opcode2];
- strcpy(mnem, mnemonics3[opcode2]); // Overwrite mnemonic
- }
- switch(admode) // Decode it...
- {
- case 0: // Illegal
- { sprintf(outbuf, "???"); break; }
- case 1: // Zero page
- { operand = DFetch(); // Get ZP address
- sprintf(outbuf, "%s $%02X", mnem, operand);
- break; }
- case 2: // Absolute
- { loperand = DFetchW(); // Get ABS address
- sprintf(outbuf, "%s $%04X", mnem, loperand);
- break; }
- case 3: // Relative
- { operand = DFetch(); // Get offset
- uint16 tmpc = (looking_at_rom ? pcr : pcrB);
- sprintf(outbuf, "%s $%04X", mnem, tmpc+(int16)(int8)operand);
- break; }
- case 4: // Long Relative
- { loperand = DFetchW(); // Get long offset
- uint16 tmpc = (looking_at_rom ? pcr : pcrB);
- sprintf(outbuf, "%s $%04X", mnem, tmpc+(int16)loperand);
- break; }
- case 5: // Inherent
- { sprintf(outbuf, "%s ", mnem);
- break; }
- case 6: // Txfr/exchg/push/pull
- { operand = DFetch(); // Get txfr/exg/push/pull byte
- if ((opcode == 0x1E) || (opcode == 0x1F)) // Is it TXF/EXG?
- {
- sprintf(tmp, "%s,%s", tregs[operand>>4], tregs[operand&0x0F]);
- }
- else
- {
- tmp[0] = 0;
- if (operand&0x01) strcat(tmp, "CC ");
- if (operand&0x02) strcat(tmp, "A ");
- if (operand&0x04) strcat(tmp, "B ");
- if (operand&0x08) strcat(tmp, "DP ");
- if (operand&0x10) strcat(tmp, "X ");
- if (operand&0x20) strcat(tmp, "Y ");
- if (operand&0x40) (((opcode==0x34)||(opcode==0x35))
- ? strcat(tmp, "U ") : strcat(tmp, "S "));
- if (operand&0x80) strcat(tmp, "PC");
- }
- sprintf(outbuf, "%s %s", mnem, tmp);
- break; }
- case 7: // Indexed (the tough one!)
- { operand = DFetch(); // Get IDX byte
- uint8 reg = ((operand & 0x60) >> 5), idxind = ((operand & 0x10) >> 4),
- lo_nyb = (operand & 0x0F), boff;
- uint16 woff;
-
- strcpy(tmp, "??");
- if (!(operand & 0x80)) // Hi bit set? Then decode 4 bit offset
- {
- sprintf(tmp, "(%d),%s", (idxind ? -(16-lo_nyb) : lo_nyb),
- iregs[reg]);
- }
- else // Add the ($nnnn,R) code dude...
- {
- if (idxind)
- {
- switch(lo_nyb)
- {
- case 1: sprintf(tmp, "(,%s++)", iregs[reg]); break;
- case 3: sprintf(tmp, "(,--%s)", iregs[reg]); break;
- case 4: sprintf(tmp, "(,%s)", iregs[reg]); break;
- case 5: sprintf(tmp, "(B,%s)", iregs[reg]); break;
- case 6: sprintf(tmp, "(A,%s)", iregs[reg]); break;
- case 8:
- { boff = DFetch(); sprintf(tmp, "($%02X,%s)", boff,
- iregs[reg]); break; }
- case 9:
- { woff = DFetchW(); sprintf(tmp, "($%04X,%s)", woff,
- iregs[reg]); break; }
- case 11: sprintf(tmp, "(D,%s)", iregs[reg]); break;
- case 12:
- { boff = DFetch(); sprintf(tmp, "($%02X,PC)", boff); break; }
- case 13:
- { woff = DFetchW(); sprintf(tmp, "($%04X,PC)", woff); break; }
- case 15:
- { woff = DFetchW(); sprintf(tmp, "[$%04X]", woff); break; }
- default: strcpy(tmp, "??");
- }
- }
- else
- {
- switch(lo_nyb)
- {
- case 0: sprintf(tmp, ",%s+", iregs[reg]); break;
- case 1: sprintf(tmp, ",%s++", iregs[reg]); break;
- case 2: sprintf(tmp, ",-%s", iregs[reg]); break;
- case 3: sprintf(tmp, ",--%s", iregs[reg]); break;
- case 4: sprintf(tmp, ",%s", iregs[reg]); break;
- case 5: sprintf(tmp, "(B),%s", iregs[reg]); break;
- case 6: sprintf(tmp, "(A),%s", iregs[reg]); break;
- case 8:
- { boff = DFetch(); sprintf(tmp, "($%02X),%s", boff,
- iregs[reg]); break; }
- case 9:
- { woff = DFetchW(); sprintf(tmp, "($%04X),%s", woff,
- iregs[reg]); break; }
- case 11: sprintf(tmp, "(D),%s", iregs[reg]); break;
- case 12:
- { boff = DFetch(); sprintf(tmp, "($%02X),PC", boff); break; }
- case 13:
- { woff = DFetchW(); sprintf(tmp, "($%04X),PC", woff); break; }
- default: strcpy(tmp, "??");
- }
- }
- }
- sprintf(outbuf, "%s %s", mnem, tmp);
- break; }
- case 8: // Immediate
- { operand = DFetch(); // Get IMM byte
- sprintf(outbuf, "%s #$%02X", mnem, operand);
- break; }
- case 9: // Long Immediate
- { loperand = DFetchW(); // Get IMM word
- sprintf(outbuf, "%s #$%04X", mnem, loperand);
- break; }
- }
- DisplayBytes(dpc, (looking_at_rom ? pcr : pcrB)); // Show bytes
- WriteLog(outbuf); WriteLog("\n"); // display opcode & addressing, etc
- dpc = (looking_at_rom ? pcr : pcrB); // Advance debug PC
- pcr = pc_save; pcrB = pcB_save; // Restore PCs
+ return 0xFF;
}
-//
-// Convert hex to dec
-//
-uint16 htod(char *str)
+void V63701WritePort1(uint8_t data)
{
- uint16 value = 0;
- int len = strlen(str);
-
- for(int i=0; i<len; i++)
- {
- if (str[i]>='0' && str[i]<='9')
- {
- value = (value<<4) | (unsigned)(str[i]-'0');
- }
- if (str[i]>='a' && str[i]<='f')
- {
- value = (value<<4) | (unsigned)(str[i]-'a')+10;
- }
- if (str[i]>='A' && str[i]<='F')
- {
- value = (value<<4) | (unsigned)(str[i]-'A')+10;
- }
- }
- return(value);
+// printf("V63701WritePort1: Wrote $%02X...\n", data);
}
-//
-// Load 32K file into ROM image space
-//
-bool Load32KImg(char * filename, uint16 address)
+void V63701WritePort2(uint8_t data)
{
- ifstream ff;
- char ch;
-
- ff.open(filename, ios::binary | ios::in); // Open 'da file...
- if (ff)
- {
- for(long i=0; i<32768; i++) // Read it in...
- {
- ff.get(ch);
- grom[address+i] = ch;
- }
- ff.close(); // Close 'da file...
- }
- return(ff);
+// printf("V63701WritePort2: Wrote $%02X...\n", data);
}
//
// Generic Load file into image space
// (No error checking performed! Responsibility of caller!)
//
-bool LoadImg(const char * filename, uint8 * mem, uint32 address, uint32 length)
+bool LoadImg(const char * filename, uint8_t * mem, uint32_t address, uint32_t length)
{
- ifstream ff;
- char path[80];
- char ch;
-
- strcpy(path, "./ROMs/");
- strcat(path, filename);
-// ff.open(filename, ios::binary | ios::in); // Open 'da file...
- ff.open(path, ios::binary | ios::in); // Open 'da file...
- if (ff)
- {
- for(uint32 i=0; i<length; i++) // Read it in...
- {
- ff.get(ch);
- mem[address+i] = ch;
- }
- ff.close(); // Close 'da file...
- }
- return(ff);
+ char path[128];
+
+ strcpy(path, "./ROMs/");
+ strcat(path, filename);
+ FILE * file = fopen(path, "rb");
+
+ if (!file)
+ {
+ printf("Could not open file \"%s\"!\n", filename);
+ return false;
+ }
+
+ size_t ignored = fread(&mem[address], 1, length, file);
+ fclose(file);
+
+ return true;
}
//
//
bool ReadColorPROMs(void)
{
- fstream ff1, ff2;
-// uint8 ch;
- char ch;
- extern uint8 palette[768]; // Screen physical palette
- extern uint8 ccolor[256][8]; // Character color PROM values
- extern uint8 scolor[128][16]; // Sprite color PROM values
-
- ff1.open("./ROMs/"PROM3, ios::binary|ios::in);
- if (ff1)
- {
- for(int i=0; i<256; i++) // Load char pallete with PROM values
- {
- for(int j=0; j<8; j++)
- {
- ff1.get(ch);
- ccolor[i][j] = (uint8)ch;
- }
- }
- ff1.close();
- }
- ff1.open("./ROMs/"PROM4, ios::binary|ios::in);
- if (ff1)
- {
- for(int i=0; i<128; i++) // Load sprite pallete with PROM values
- {
- for(int j=0; j<16; j++)
- {
- ff1.get(ch);
- scolor[i][j] = (uint8)ch;
- }
- }
- ff1.close();
- }
-
- ff1.open("./ROMs/"PROM1, ios::binary|ios::in);
- ff2.open("./ROMs/"PROM2, ios::binary|ios::in);
- if (ff1) // If open was successful...
- {
- for(int i=0; i<768; i+=3)
- {
- ff1.get(ch);
- palette[i] = (uint8)(ch&0x0F);
- palette[i+1] = (uint8)(ch>>4);
- ff2.get(ch);
- palette[i+2] = (uint8)ch;
- }
-
- // Do palette stretching here... I.e. add 0 to hinyb 0, 1 to hinyb 1, etc.
-
- for(int i=0; i<768; i++)
- palette[i] = ((palette[i]<<4)&0xF0) | (palette[i]&0x0F);
-
- ff1.close();
- ff2.close();
- }
- return ff1;
-}
+ FILE * file1 = fopen("./ROMs/" PROM3, "rb");
-//
-// Unpack font data
-//
-bool UnpackFonts(void)
-{
-// uint8 b1, b2, b3;
- char b1, b2, b3;
- fstream f1, f2;
- //0x4000 $800 chars
- f1.open("./ROMs/"ROM7, ios::binary | ios::in);
- f2.open("./ROMs/"ROM8, ios::binary | ios::in);
- if ((!f1) || (!f2)) return false; // Return if not found...
- for(long i=0; i<0x40000; i+=64)
- {
- for(int j=0; j<64; j+=8)
- {
- f1.get(b1); f1.get(b2); f2.get(b3);
- b3 ^= 0xFF; // Invert top data...
- chr_rom[i+j] = ((b3 & 0x80) >> 5) | ((b1 & 0x80) >> 6) | ((b1 & 0x08) >> 3);
- chr_rom[i+j+1] = ((b3 & 0x40) >> 4) | ((b1 & 0x40) >> 5) | ((b1 & 0x04) >> 2);
- chr_rom[i+j+2] = ((b3 & 0x20) >> 3) | ((b1 & 0x20) >> 4) | ((b1 & 0x02) >> 1);
- chr_rom[i+j+3] = ((b3 & 0x10) >> 2) | ((b1 & 0x10) >> 3) | (b1 & 0x01);
- chr_rom[i+j+4] = ((b3 & 0x08) >> 1) | ((b2 & 0x80) >> 6) | ((b2 & 0x08) >> 3);
- chr_rom[i+j+5] = (b3 & 0x04) | ((b2 & 0x40) >> 5) | ((b2 & 0x04) >> 2);
- chr_rom[i+j+6] = ((b3 & 0x02) << 1) | ((b2 & 0x20) >> 4) | ((b2 & 0x02) >> 1);
- chr_rom[i+j+7] = ((b3 & 0x01) << 2) | ((b2 & 0x10) >> 3) | (b2 & 0x01);
- }
- }
- f1.close();
- f2.close();
-
- f1.open("./ROMs/"ROM5, ios::binary | ios::in);
- f2.open("./ROMs/"ROM6, ios::binary | ios::in);
- for(long i=0x40000; i<0x60000; i+=64)
- {
- for(int j=0; j<64; j+=8)
- {
- f1.get(b1); f1.get(b2); f2.get(b3);
- b3 ^= 0xFF; // Invert top data
- chr_rom[i+j] = ((b3 & 0x80) >> 5) | ((b1 & 0x80) >> 6) | ((b1 & 0x08) >> 3);
- chr_rom[i+j+1] = ((b3 & 0x40) >> 4) | ((b1 & 0x40) >> 5) | ((b1 & 0x04) >> 2);
- chr_rom[i+j+2] = ((b3 & 0x20) >> 3) | ((b1 & 0x20) >> 4) | ((b1 & 0x02) >> 1);
- chr_rom[i+j+3] = ((b3 & 0x10) >> 2) | ((b1 & 0x10) >> 3) | (b1 & 0x01);
- chr_rom[i+j+4] = ((b3 & 0x08) >> 1) | ((b2 & 0x80) >> 6) | ((b2 & 0x08) >> 3);
- chr_rom[i+j+5] = (b3 & 0x04) | ((b2 & 0x40) >> 5) | ((b2 & 0x04) >> 2);
- chr_rom[i+j+6] = ((b3 & 0x02) << 1) | ((b2 & 0x20) >> 4) | ((b2 & 0x02) >> 1);
- chr_rom[i+j+7] = ((b3 & 0x01) << 2) | ((b2 & 0x10) >> 3) | (b2 & 0x01);
- }
- }
- f1.close();
- f2.close();
- return true; // Made it!
-}
+ if (file1)
+ {
+ for(int i=0; i<256; i++) // Load char pallete with PROM values
+ for(int j=0; j<8; j++)
+ ccolor[i][j] = (uint8_t)fgetc(file1);
-//
-// Get length of sample from WAV format
-//
-uint32 GetWAVLength(fstream &file)
-{
- char ch;
- uint32 len;
+ fclose(file1);
+ }
+
+ file1 = fopen("./ROMs/" PROM4, "rb");
+
+ if (file1)
+ {
+ for(int i=0; i<128; i++) // Load sprite pallete with PROM values
+ for(int j=0; j<16; j++)
+ scolor[i][j] = (uint8_t)fgetc(file1);
- file.ignore(16); // Skip header BS
+ fclose(file1);
+ }
+
+ file1 = fopen("./ROMs/" PROM1, "rb");
+ FILE * file2 = fopen("./ROMs/" PROM2, "rb");
- for(int i=0; i<2; i++)
+ // If open was successful...
+ if (file1 && file2)
{
- file.get(ch); len = (int)(uint8)ch;
- file.get(ch); len |= (int)(uint8)ch << 8;
- file.get(ch); len |= (int)(uint8)ch << 16;
- file.get(ch); len |= (int)(uint8)ch << 24;
+ // Palette is 12-bit RGB, we stretch it to 24-bit
+ for(int i=0; i<256; i++)
+ {
+ uint8_t c1 = fgetc(file1);
+ uint8_t c2 = fgetc(file2);
+ uint8_t r = (uint8_t)c1 & 0x0F;
+ uint8_t g = (uint8_t)c1 >> 4;
+ uint8_t b = (uint8_t)c2;
+ palette[i] = 0xFF000000 | (b << 20) | (b << 16) | (g << 12) | (g << 8) | (r << 4) | r;
+ }
- file.ignore(len + 4); // Skip intermediate data
+ fclose(file1);
+ fclose(file2);
}
- file.get(ch); len = (int)(uint8)ch; // & finally get length of data
- file.get(ch); len |= (int)(uint8)ch << 8;
- file.get(ch); len |= (int)(uint8)ch << 16;
- file.get(ch); len |= (int)(uint8)ch << 24;
+ // PROM5 has the following in it (tile address decoder):
+ // 00: 00 20 40 60 02 22 42 62 04 24 44 64 06 26 46 66
+ // 10: 88 A8 C8 E8 8A AA CA EA 8C AC CC EC 8E AE CE EE
- return len;
+ if (!file1)
+ {
+ printf("Could not open PROM files!\n");
+ return false;
+ }
+
+ return true;
}
//
-// Load PSG samples from disk
+// Unpack font data
//
-void LoadPSGs(void)
+bool UnpackFonts(void)
{
- char file[40];
- char ch;
- uint32 len;
+ // 0x4000 $800 chars
+ FILE * file1 = fopen("./ROMs/" ROM7, "rb");
+ FILE * file2 = fopen("./ROMs/" ROM8, "rb");
- for(int i=0; i<16; i++)
+ if (!file1 || !file2)
{
- fstream fp;
-
- psg_adrs[i] = NULL; // Zero out pointer
- sprintf(file, "./sounds/psg%i.wav", i); // Create filename
-
- fp.open(file, ios::binary | ios::in); // Attempt to open it...
+ printf("Could not open either " ROM7 " or " ROM8 "!\n");
+ return false;
+ }
- if (fp)
+ for(long i=0; i<0x40000; i+=64)
+ {
+ for(int j=0; j<64; j+=8)
{
- len = GetWAVLength(fp); // Get WAV data length...
+ uint8_t b1 = (uint8_t)fgetc(file1);
+ uint8_t b2 = (uint8_t)fgetc(file1);
+ uint8_t b3 = (uint8_t)fgetc(file2) ^ 0xFF;
+ charROM[i + j + 0] = ((b3 & 0x80) >> 5) | ((b1 & 0x80) >> 6) | ((b1 & 0x08) >> 3);
+ charROM[i + j + 1] = ((b3 & 0x40) >> 4) | ((b1 & 0x40) >> 5) | ((b1 & 0x04) >> 2);
+ charROM[i + j + 2] = ((b3 & 0x20) >> 3) | ((b1 & 0x20) >> 4) | ((b1 & 0x02) >> 1);
+ charROM[i + j + 3] = ((b3 & 0x10) >> 2) | ((b1 & 0x10) >> 3) | (b1 & 0x01);
+ charROM[i + j + 4] = ((b3 & 0x08) >> 1) | ((b2 & 0x80) >> 6) | ((b2 & 0x08) >> 3);
+ charROM[i + j + 5] = (b3 & 0x04) | ((b2 & 0x40) >> 5) | ((b2 & 0x04) >> 2);
+ charROM[i + j + 6] = ((b3 & 0x02) << 1) | ((b2 & 0x20) >> 4) | ((b2 & 0x02) >> 1);
+ charROM[i + j + 7] = ((b3 & 0x01) << 2) | ((b2 & 0x10) >> 3) | (b2 & 0x01);
+ }
+ }
- psg_adrs[i] = new uint8[len]; // Attempt to allocate space...
+ fclose(file1);
+ fclose(file2);
- if (psg_adrs[i] != NULL)
- {
- for(int j=0; j<(signed)len; j++)
- {
- fp.get(ch);
- psg_adrs[i][j] = ch; // & load it in...
- }
+ file1 = fopen("./ROMs/" ROM5, "rb");
+ file2 = fopen("./ROMs/" ROM6, "rb");
- psg_lens[i] = len;
-// cout << "Found sample file: " << file << "\t[Length: " << dec << len << "]" << endl;
- printf("Found sample file: %s\t[Length: %u]\n", file, len);
- }
+ if (!file1 || !file2)
+ {
+ printf("Could not open either " ROM5 " or " ROM6 "!\n");
+ return false;
+ }
- fp.close();
+ for(long i=0x40000; i<0x60000; i+=64)
+ {
+ for(int j=0; j<64; j+=8)
+ {
+ uint8_t b1 = (uint8_t)fgetc(file1);
+ uint8_t b2 = (uint8_t)fgetc(file1);
+ uint8_t b3 = (uint8_t)fgetc(file2) ^ 0xFF;
+ charROM[i + j + 0] = ((b3 & 0x80) >> 5) | ((b1 & 0x80) >> 6) | ((b1 & 0x08) >> 3);
+ charROM[i + j + 1] = ((b3 & 0x40) >> 4) | ((b1 & 0x40) >> 5) | ((b1 & 0x04) >> 2);
+ charROM[i + j + 2] = ((b3 & 0x20) >> 3) | ((b1 & 0x20) >> 4) | ((b1 & 0x02) >> 1);
+ charROM[i + j + 3] = ((b3 & 0x10) >> 2) | ((b1 & 0x10) >> 3) | (b1 & 0x01);
+ charROM[i + j + 4] = ((b3 & 0x08) >> 1) | ((b2 & 0x80) >> 6) | ((b2 & 0x08) >> 3);
+ charROM[i + j + 5] = (b3 & 0x04) | ((b2 & 0x40) >> 5) | ((b2 & 0x04) >> 2);
+ charROM[i + j + 6] = ((b3 & 0x02) << 1) | ((b2 & 0x20) >> 4) | ((b2 & 0x02) >> 1);
+ charROM[i + j + 7] = ((b3 & 0x01) << 2) | ((b2 & 0x10) >> 3) | (b2 & 0x01);
}
}
+
+ fclose(file1);
+ fclose(file2);
+
+ return true;
}
-//
-// Load FM samples from disk
-//
-void LoadFMs(void)
+void SaveThunderState(const char * filename)
{
- char file[200];
- char ch;
- uint32 len;
+ WriteLog("Main: Saving Thunder state...\n");
+ FILE * file = fopen(filename, "wb");
- for(int i=0; i<14; i++)
+ if (!file)
{
- fstream fp;
+ WriteLog("Could not open file \"%s\" for writing!\n", filename);
+ return;
+ }
- fm_adrs[i] = NULL; // Zero out pointer
- sprintf(file, "./sounds/fm%i.wav", i); // Create filename
+ // Write out header
+ size_t ignored = fwrite(stateHeader, 1, 19, file);
- fp.open(file, ios::binary | ios::in); // Attempt to open it...
+ // Write out CPUs' state
+ ignored = fwrite(&cpu1, 1, sizeof(cpu1), file);
+ ignored = fwrite(&cpu2, 1, sizeof(cpu2), file);
+ ignored = fwrite(&mcu, 1, sizeof(mcu), file);
- if (fp)
- {
- len = GetWAVLength(fp); // Get WAV length...
+ // Write out main memory
+ ignored = fwrite(gram1, 1, 0x10000, file);
+ ignored = fwrite(mcuMem, 1, 0x10000, file);
- fm_adrs[i] = new uint8[len]; // Attempt to allocate space...
+ // Write out state variables
+ WriteLong(file, banksw1);
+ WriteLong(file, banksw2);
+ fputc((uint8_t)copySprites, file);
+ fputc(input1.byte, file);
+ fputc(input2.byte, file);
+ fputc(input3.byte, file);
+ fputc(input4.byte, file);
+ fputc(input5.byte, file);
- if (fm_adrs[i] != NULL)
- {
- for(int j=0; j<(signed)len; j++)
- {
- fp.get(ch);
- fm_adrs[i][j] = ch; // & load it in...
- }
+ PSGSaveState(file);
+ YMSaveState(file);
- fm_lens[i] = len;
-// cout << "Found sample file: " << file << " [Length: " << dec << len << "]" << endl;
- printf("Found sample file: %s\t[Length: %u]\n", file, len);
- }
-
- fp.close();
- }
- }
+ fclose(file);
}
-//
-// Main loop
-//
-int main(int argc, char * argv[])
+bool LoadThunderState(const char * filename)
{
- InitLog("thunder.log");
+ WriteLog("Main: Loading Thunder state...\n");
+ FILE * file = fopen(filename, "rb");
-extern bool disasm; // From 'V6809.CPP'
- extern bool charbase; // From 'SCREEN.CPP'
- charbase = false;
-
- char lbuff[80];
- fstream ff; // Declare fstream without file hooks...
- bool brk = false, brk2 = false; // Breakpoint set flag
- uint16 brkpnt, brkpnt2; // Where the breakpoint is...
- bool running; // CPU running state flag...
- bool self_test = false; // Self-test switch
- bool scr_type = false; // false=chars, true=pixels
- uint16 debounce = 0; // Key de-bounce counter
- uint16 fire_debounce = 0; // Fire button debounce counter
-// bool refresh2 = true; // Default to 60 Hz...
- uint8 x; // General placeholder...
- bool active = true; // Program running flag
-
- SDL_Event event; // SDL "event"
- extern uint8 palette[768]; // Screen physical palette
- uint32 ticks, oldTicks;
-
- cout << endl << "THUNDER v"THUNDER_VERSION" ";
- cout << "by James Hammons" << endl;
- cout << "Serial #20090723 / Prerelease" << endl;
- cout << "(C) 2003, 2009 Underground Software" << endl << endl;
-
- cout << "This emulator is free software. If you paid for it you were RIPPED OFF"
- << endl << endl;
-
- cout << "Initializing SDL..." << endl;
-
- if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER) < 0)
+ if (!file)
{
- cout << "Couldn't initialize SDL: " << SDL_GetError() << endl;
- return -1;
+ WriteLog("Could not open file \"%s\" for reading!\n", filename);
+ return false;
}
- SDL_WM_SetCaption("Thunder v"THUNDER_VERSION" ", "Thunder");
-
- keys = SDL_GetKeyState(NULL); // Get the SDL keyboard matrix
+ uint8_t buffer[19];
+ size_t ignored = fread(buffer, 1, 19, file);
- gram = gram1; grom = grom1; // Needed only for debugger
+ // Sanity check...
+ if (memcmp(buffer, stateHeader, 19) != 0)
+ {
+ fclose(file);
+ WriteLog("File \"%s\" is not a valid Thunder save state file!\n", filename);
+ return false;
+ }
- for(long i=0; i<0x10000; i++)
- {
- gram[i] = 0; grom[i] = 0; // Zero out memory
- gram2[i] = 0; grom2[i] = 0;
- }
- game_over_switch = 0; // Init game over delay
-// cpu1.a = 0; cpu1.b = 0; cpu1.cc = 0; cpu1.dp = 0; cpu1.x = 0; cpu1.y = 0; cpu1.s = 0; ur = 0; cpu1.pc = 0;
+ // Read CPUs' state
+ ignored = fread(&cpu1, 1, sizeof(cpu1), file);
+ ignored = fread(&cpu2, 1, sizeof(cpu2), file);
+ ignored = fread(&mcu, 1, sizeof(mcu), file);
- cout << "Loading ROMs..." << endl;
-// LoadCMOS(); // Load CMOS at $CC00-$CFFF
- if (!ReadColorPROMs()) // Load virtual PROMs
- { cout << "Could not open PROM files!" << endl; return -1; }
+ // Read main memory
+ ignored = fread(gram1, 1, 0x10000, file);
+ ignored = fread(mcuMem, 1, 0x10000, file);
- if (!LoadImg(ROM1, grom1, 0x8000, 0x8000)) // Load $8000-$FFFF 1st ROM
- { cout << "Could not open file '" << ROM1 << "'!" << endl; return -1; }
+ // Read in state variables
+ banksw1 = ReadLong(file);
+ banksw2 = ReadLong(file);
+ copySprites = (bool)fgetc(file);
+ input1.byte = fgetc(file);
+ input2.byte = fgetc(file);
+ input3.byte = fgetc(file);
+ input4.byte = fgetc(file);
+ input5.byte = fgetc(file);
- if (!LoadImg(ROM2, grom2, 0x8000, 0x8000)) // Load $8000-$FFFF 2nd ROM
- { cout << "Could not open file '" << ROM2 << "'!" << endl; return -1; }
+ PSGLoadState(file);
+ YMLoadState(file);
- if (!LoadImg(ROM3, grom3, 0, 0x8000)) // Load 3rd ROM into its own space
- { cout << "Could not open file '" << ROM3 << "'!" << endl; return -1; }
+ fclose(file);
- if (!LoadImg(ROM4, grom4, 0, 0x8000)) // Load 4rd ROM into its own space
- { cout << "Could not open file '" << ROM4 << "'!" << endl; return -1; }
+ // Make sure things are in a sane state before execution :-P
+ cpu1.RdMem = MainReadMemory;
+ cpu1.WrMem = MainWriteMemory;
- if (!LoadImg(ROM17, data_rom, 0, 0x10000)) // Load 17th ROM
- { cout << "Could not open file '" << ROM17 << "'!" << endl; return -1; }
+ cpu2.RdMem = SubReadMemory;
+ cpu2.WrMem = SubWriteMemory;
- if (!LoadImg(ROM18, data_rom, 0x10000, 0x10000)) // Load 18th ROM
- { cout << "Could not open file '" << ROM18 << "'!" << endl; return -1; }
+ mcu.RdMem = MCUReadMemory;
+ mcu.WrMem = MCUWriteMemory;
- if (!LoadImg(ROM19, data_rom, 0x20000, 0x10000)) // Load 19th ROM
- { cout << "Could not open file '" << ROM19 << "'!" << endl; return -1; }
+ return true;
+}
- if (!LoadImg(ROM20, data_rom, 0x30000, 0x10000)) // Load 20th ROM
- { cout << "Could not open file '" << ROM20 << "'!" << endl; return -1; }
+//
+// Main loop
+//
+int main(int argc, char * argv[])
+{
+ InitLog("thunder.log");
- if (!LoadImg(ROM9, spr_rom, 0, 0x10000)) // Load 9th ROM
- { cout << "Could not open file '" << ROM9 << "'!" << endl; return -1; }
+ bool running; // CPU running state flag...
+ SDL_Event event; // SDL "event"
+ uint32_t ticks, oldTicks;
+ uint8_t frameTickCount = 0;
- if (!LoadImg(ROM10, spr_rom, 0x10000, 0x10000)) // Load 10th ROM
- { cout << "Could not open file '" << ROM10 << "'!" << endl; return -1; }
+ printf("THUNDER v" THUNDER_VERSION " by James Hammons\n");
+ printf("Serial #20230113 / Prerelease\n");
+ printf("© 2003, 2023 Underground Software\n\n");
+ printf("This emulator is free software. If you paid for it you were RIPPED OFF\n\n");
- if (!LoadImg(ROM11, spr_rom, 0x20000, 0x10000)) // Load 11th ROM
- { cout << "Could not open file '" << ROM11 << "'!" << endl; return -1; }
+// SDL_WM_SetCaption("Thunder v"THUNDER_VERSION" ", "Thunder");
- if (!LoadImg(ROM12, spr_rom, 0x30000, 0x10000)) // Load 12th ROM
- { cout << "Could not open file '" << ROM12 << "'!" << endl; return -1; }
+ printf("Loading ROMs...\n");
- if (!LoadImg(ROM13, spr_rom, 0x40000, 0x10000)) // Load 13th ROM
- { cout << "Could not open file '" << ROM13 << "'!" << endl; return -1; }
+ if (!ReadColorPROMs())
+ return -1;
- if (!LoadImg(ROM14, spr_rom, 0x50000, 0x10000)) // Load 14th ROM
- { cout << "Could not open file '" << ROM14 << "'!" << endl; return -1; }
+ // Load $8000-$FFFF 1st ROM
+ if (!LoadImg(ROM1, grom1, 0x8000, 0x8000))
+ return -1;
- if (!LoadImg(ROM15, spr_rom, 0x60000, 0x10000)) // Load 15th ROM
- { cout << "Could not open file '" << ROM15 << "'!" << endl; return -1; }
+ // Load $8000-$FFFF 2nd ROM
+ if (!LoadImg(ROM2, grom2, 0x8000, 0x8000))
+ return -1;
- if (!LoadImg(ROM16, spr_rom, 0x70000, 0x10000)) // Load 16th ROM
- { cout << "Could not open file '" << ROM16 << "'!" << endl; return -1; }
+ // Load 3rd ROM into its own space
+ if (!LoadImg(ROM3, grom3, 0, 0x8000))
+ return -1;
- if (!LoadImg(ROM21, voice_rom, 0, 0x10000)) // Load 21st ROM
- { cout << "Could not open file '" << ROM21 << "'!" << endl; return -1; }
+ if (!LoadImg(ROM17, data_rom, 0, 0x10000))
+ return -1;
- if (!LoadImg(ROM22, voice_rom, 0x10000, 0x10000)) // Load 22nd ROM
- { cout << "Could not open file '" << ROM22 << "'!" << endl; return -1; }
+ if (!LoadImg(ROM18, data_rom, 0x10000, 0x10000))
+ return -1;
- if (!UnpackFonts()) // Load 5, 6, 7, 8th ROMs
- {
- cout << "Could not open font files!" << endl;
- return -1;
- }
+ if (!LoadImg(ROM19, data_rom, 0x20000, 0x10000))
+ return -1;
- // Load samples if they're there...
- LoadPSGs();
- LoadFMs();
+ if (!LoadImg(ROM20, data_rom, 0x30000, 0x10000))
+ return -1;
- // Quick 'n' Dirty voice dump (sound 0x0E)
-/* uint32 adc = (voice_rom[26]<<8) | voice_rom[27];
- bool doneWitIt = false;
- int crh = 0;
- while (!doneWitIt)
- {
- if (voice_rom[adc] < 0x10) tr << "0";
- tr << hex << (int)voice_rom[adc] << " ";
- if (crh++ > 24) { crh = 0; tr << endl; }
- if ((voice_rom[adc] == 0xFF) && (voice_rom[adc-1] != 0x00))
- doneWitIt = true;
- adc++;
- }//*/
+ if (!LoadImg(ROM9, spr_rom, 0, 0x10000))
+ return -1;
- // Set up V6809 execution contexts
+ if (!LoadImg(ROM10, spr_rom, 0x10000, 0x10000))
+ return -1;
- memset(&cpu1, 0, sizeof(V6809REGS));
- cpu1.RdMem = RdMem;
- cpu1.WrMem = WrMem;
- cpu1.cpuFlags |= V6809_ASSERT_LINE_RESET;
+ if (!LoadImg(ROM11, spr_rom, 0x20000, 0x10000))
+ return -1;
- memset(&cpu2, 0, sizeof(V6809REGS));
- cpu2.RdMem = RdMemB;
- cpu2.WrMem = WrMemB;
- cpu2.cpuFlags |= V6809_ASSERT_LINE_RESET;
+ if (!LoadImg(ROM12, spr_rom, 0x30000, 0x10000))
+ return -1;
- bool firstTime = true; // kludge...
+ if (!LoadImg(ROM13, spr_rom, 0x40000, 0x10000))
+ return -1;
-WriteLog("About to go to the main loop...\n");
- while (active)
- {
- cout << ">";
- if (firstTime)
- {
- firstTime = false; // crappy kludge...
- lbuff[0] = 'r';
- lbuff[1] = 0;
- }
- else
- cin >> lbuff;
+ if (!LoadImg(ROM14, spr_rom, 0x50000, 0x10000))
+ return -1;
- if (lbuff[0] == 'd')
- {
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32;
- dpc = htod(lbuff);
- }
- printf("%04X: ", dpc);
- uint16 pc_save = cpu1.pc, pcB_save = cpu2.pc;
- cpu1.pc = dpc; cpu2.pc = dpc;
- for(int i=0; i<16; i++)
- printf("%02X ", (looking_at_rom ? Fetch() : FetchB()));
- cout << " ";
- cpu1.pc = dpc; cpu2.pc = dpc;
- for(int i=0; i<16; i++)
- {
- uint8 a = (looking_at_rom ? Fetch() : FetchB());
- if (a<10) cout << (char)(a+48);
- if ((a>9) && (a<37)) cout << (char)(a+55);
- if (a>36) cout << ".";
- }
- cout << endl;
- dpc = (looking_at_rom ? cpu1.pc : cpu2.pc);
- cpu1.pc = pc_save; cpu2.pc = pcB_save;
- }
- else if (lbuff[0] == 'e')
- {
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32;
- dpc = htod(lbuff);
- }
- printf("%04X: ", dpc);
- for(int i=0; i<16; i++) printf("%02X ", (uint8)gram[dpc++]);
- cout << endl;
- }
- else if (lbuff[0] == 'l')
- {
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32;
- dpc = htod(lbuff);
- }
- for(int i=0; i<23; i++)
- Decode_6809();
- }
- else if (lbuff[0] == 't')
- {
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32;
- dpc = htod(lbuff);
- }
- if (looking_at_rom)
- {
- cpu1.pc = dpc;
- Decode_6809();
- Execute6809(&cpu1, 1);
- dpc = cpu1.pc;
- printf("A=%02X B=%02X CC=%02X DP=%02X X=%04X Y=%04X S=%04X U=%04X PC=%04X",
- cpu1.a, cpu1.b, cpu1.cc, cpu1.dp, cpu1.x, cpu1.y, cpu1.s, cpu1.u, cpu1.pc);
- cout << " iclock=" << cpu1.clock << endl;
- }
- else
- {
- cpu2.pc = dpc;
- Decode_6809();
- Execute6809(&cpu2, 1);
- dpc = cpu2.pc;
- printf("A=%02X B=%02X CC=%02X DP=%02X X=%04X Y=%04X S=%04X U=%04X PC=%04X",
- cpu2.a, cpu2.b, cpu2.cc, cpu2.dp, cpu2.x, cpu2.y, cpu2.s, cpu2.u, cpu2.pc);
- cout << " iclock=" << cpu2.clock << endl;
- }
- }
- else if ((lbuff[0] == 'r') || (lbuff[0] == 'c')) // Run/continue...
- {
-WriteLog("Executing 'run' command...\n");
- uint32 my_clock = 0;
- running = true; // Set running status...
- trace1 = false;
- SetRefreshRate(refresh2); // Tell GUI our refresh rate
- //for(uint16 i=0; i<0x8000; i++) gram2[i] = grom3[i]; //Temp
-
- if (lbuff[0] == 'r') // If run, then reset CPUs
- {
-WriteLog("Executing secondary 'run' command...\n");
-#if 1
- // This is data that is supposed to come from the MCU... So that's why it hangs
- gram1[0x4182] = 0xA6; // Temp kludge
- gram1[0x4184] = 0xA6;
- gram1[0x4183] = 0x00; // More of the same
- gram1[0x4185] = 0x00;
-#endif
- banksw1 = 0; // Will this work?
- banksw2 = 0;
-// iclock = 0; // Reset instr clock #1...
- InitGUI(); // Reset # of coins
+ if (!LoadImg(ROM15, spr_rom, 0x60000, 0x10000))
+ return -1;
-#if 0
- cpu1.pc = ((grom1[0xFFFE]<<8) | grom1[0xFFFF]); // Reset 6809 #1
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32; cpu1.pc = htod(lbuff);
- }
- else cpu1.cc = 0xFF; // Set CC register
+ if (!LoadImg(ROM16, spr_rom, 0x70000, 0x10000))
+ return -1;
- cpu2.pc = ((grom2[0xFFFE]<<8) | grom2[0xFFFF]); // Reset 6809 #2
- cpu2.cc = 0xFF; // Set CC register
- while(iclock < 8000) // was 17000, 20000, 5000
- {
- Execute6809(&cpu1, 1); Execute6809(&cpu2, 1);
- }
-#endif
-#if 0
-WriteLog("--> CPU clock #1: %u\n", cpu1.clock);
- // Will *this* help video sync? NO
- while (cpu1.clock < 8000) // was 17000, 20000, 5000
- {
- Execute6809(&cpu1, 1);
- Execute6809(&cpu2, 1);
- }
-#endif
- }
+ if (!LoadImg(ROM21, voice_rom, 0, 0x10000))
+ return -1;
-WriteLog("About to set up screen...\n");
-// if (!SetVESA2()) running = false; // Set up screen
- // Set up screen (windowed)
- screen = SDL_SetVideoMode(640, 480, 8, SDL_SWSURFACE); //video_bpp, videoflags);
- if (screen == NULL)
- {
- cout << "Failed to initialize screen!" << endl;
- running = false;
- }
+ if (!LoadImg(ROM22, voice_rom, 0x10000, 0x10000))
+ return -1;
- SDL_Color colors[256];
- for(int i=0; i<256; i++)
- {
- colors[i].r = palette[i*3+0];
- colors[i].g = palette[i*3+1];
- colors[i].b = palette[i*3+2];
- }
- SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, colors, 0, 256);
+ // Load 5, 6, 7, 8th ROMs
+ if (!UnpackFonts())
+ return -1;
-#if 0
- // This confirms that we're getting video to the screen...
- SDL_LockSurface(screen);
+ // Load MCU program + data
+ if (!LoadImg(MCUROM, mcuMem, 0xF000, 0x1000))
+ return -1;
- uint8 pixel = 0;
- uint8 * pixels = (uint8 *)(screen->pixels);
+ if (!LoadImg(ROM4, mcuMem, 0x4000, 0x8000))
+ return -1;
- for(uint32 y=0; y<480; y++)
- for(uint32 x=0; x<640; x++)
- pixels[(y * 640) + x] = pixel++;
+ // Set up V6809, V63701 execution contexts
+ memset(&cpu1, 0, sizeof(V6809REGS));
+ cpu1.RdMem = MainReadMemory;
+ cpu1.WrMem = MainWriteMemory;
+ cpu1.cpuFlags |= V6809_LINE_RESET;
- SDL_UnlockSurface(screen);
- SDL_UpdateRect(screen, 0, 0, 0, 0);
-#endif
+ memset(&cpu2, 0, sizeof(V6809REGS));
+ cpu2.RdMem = SubReadMemory;
+ cpu2.WrMem = SubWriteMemory;
+ cpu2.cpuFlags |= V6809_LINE_RESET;
+
+ memset(&mcu, 0, sizeof(V63701REGS));
+ mcu.RdMem = MCUReadMemory;
+ mcu.WrMem = MCUWriteMemory;
+ mcu.cpuFlags |= V63701_LINE_RESET;
+
+ running = true;
+
+ // Set all inputs to inactive...
+ input1.byte = input2.byte = input3.byte = 0xFF;
+ banksw1 = 0;
+ banksw2 = 0;
+ InitGUI(); // Reset # of coins
+
+ // Set up DIP switches...
+ input4.bit.b0 = 1; // DSW B-0: Continues (1 = 6, 0 = 3)
+ input4.bit.b1 = 1; // DSW B-2: ???
+ input4.bit.b2 = 1; // DSW B-4: Difficulty (1 = normal, 0 = easy)
+ input4.bit.b3 = 1; // DSW B-6: Bonus lives (70K/200K = 1, 100K/300K = 0)
+ input4.bit.b4 = 1; // DSW A-0: Coin #2 credit
+ input4.bit.b5 = 1; // DSW A-2: Freeze mode (0 = freeze)
+ input4.bit.b6 = 1; // DSW A-4: Attract mode sound (1 = on)
+ input4.bit.b7 = 1; // DSW A-6: Coin #1 credit
+
+ input5.bit.b0 = 1; // DSW B-1: Cabinet type (1 = A, 0 = B)
+ input5.bit.b1 = 0; // DSW B-3: Level select (0 = on)
+ input5.bit.b2 = 0; // DSW B-5: Time (1 = 120, 0 = 150)
+ input5.bit.b3 = 0; // DSW B-7: Lives (1 = 3, 0 = 5)
+ input5.bit.b4 = 1; // DSW A-1: Coin #2 credit
+ input5.bit.b5 = 1; // DSW A-3: Invulnerability (0 = on)
+ input5.bit.b6 = 1; // DSW A-5: Coin #1 credit
+ input5.bit.b7 = 1; // DSW A-7: Service mode
- for(int i=0; i<256; i++)
- keys[i] = 0; // Clear keyboard buffer...
+WriteLog("About to set up screen...\n");
+ InitVideo();
- oldTicks = SDL_GetTicks();
+ oldTicks = SDL_GetTicks();
WriteLog("About to set up audio...\n");
- // This crap SHOULD be in sound.cpp (not yet created)...
- SDL_AudioSpec desired, obtained;
- desired.freq = 22050;
- desired.format = AUDIO_U8;
- desired.channels = 1;
- desired.samples = 600;
- desired.callback = SoundFunc;
- desired.userdata = NULL;
- // Also, should check to see if it got the hardware it needed, correct sample size, etc.
- if (SDL_OpenAudio(&desired, &obtained) < 0)
- {
- cout << "Couldn't open audio: " << SDL_GetError() << endl;
- return -1;
- }
- SDL_PauseAudio(0); // Get that audio going!
+ InitSound();
WriteLog("About to enter main loop...\n");
- while (running)
+ while (running)
+ {
+// HandleGUIDebounce(); // Debounce GUI keys
+
+// Dipswitches are presented to the main CPUs as 0 or 1 at locations
+// $423D - $425B by the MCU
+
+ // SDL key handling...
+
+ SDL_Event event;
+
+ while (SDL_PollEvent(&event))
+ {
+ switch (event.type)
{
- HandleGUIDebounce(); // Debounce GUI keys
- if (game_over_switch)
+ case SDL_KEYDOWN:
+ if (event.key.keysym.sym == SDLK_ESCAPE)
+ running = false;
+ // Do PCX snapshot (F4)
+ else if (event.key.keysym.sym == SDLK_F4)
{
- game_over_switch--; // Countdown...
- if (game_over_switch == 0)
- gram1[0x4380] = 0; // Kill music!
+// SpawnSound(USERSOUND, SCAMERA);
+ SavePCXSnapshot();
}
-//testing... (works)
-//gram1[0x423D] = 1;
- //gram1[0x423D] = self_test; // Reset DSW1-1
- gram1[0x4268] = 0; // Reset Video test
- gram1[0x427A] = 0; gram1[0x427C] = 0;
- gram1[0x427B] = 0; gram1[0x427D] = 0;
- gram1[0x427E] = 0; gram1[0x427F] = 0;
- gram1[0x4280] = 0; gram1[0x4281] = 0;
- gram1[0x4276] = 0; gram1[0x426A] = 0;
- gram1[0x4278] = 0; gram1[0x426C] = 0;
- gram1[0x4262] = 0; gram1[0x4260] = 0;
- //gram1[0x4247] = 0;
-
- // SDL key handling...
-
- SDL_PumpEvents(); // Force key events into the buffer.
+#if 1
+ else if (event.key.keysym.sym == SDLK_5)
+ input1.bit.b5 = 0;
+ else if (event.key.keysym.sym == SDLK_1)
+ input1.bit.b6 = 0;
+ else if (event.key.keysym.sym == SDLK_2)
+ input2.bit.b6 = 0;
+ else if (event.key.keysym.sym == SDLK_c) // Left
+ input3.bit.b5 = 0;
+ else if (event.key.keysym.sym == SDLK_z) // Right
+ input3.bit.b4 = 0;
+ else if (event.key.keysym.sym == SDLK_s) // Up
+ input2.bit.b2 = 0;
+ else if (event.key.keysym.sym == SDLK_x) // Down
+ input1.bit.b2 = 0;
+ else if (event.key.keysym.sym == SDLK_k) // Jump
+ input1.bit.b1 = 0;
+ else if (event.key.keysym.sym == SDLK_l) // Fire
+ input3.bit.b3 = 0;
+
+ else if (event.key.keysym.sym == SDLK_F1) // Service mode
+ input5.bit.b7 = !input5.bit.b7;
+
+ else if (event.key.keysym.sym == SDLK_q)
+ input4.bit.b7 = !input4.bit.b7;
+ else if (event.key.keysym.sym == SDLK_w)
+ input5.bit.b6 = !input5.bit.b6;
+ else if (event.key.keysym.sym == SDLK_e)
+ input5.bit.b5 = !input5.bit.b5;
+ else if (event.key.keysym.sym == SDLK_r)
+ input5.bit.b4 = !input5.bit.b4;
+ else if (event.key.keysym.sym == SDLK_t)
+ input5.bit.b3 = !input5.bit.b3;
+ else if (event.key.keysym.sym == SDLK_y)
+ input5.bit.b2 = !input5.bit.b2;
+ else if (event.key.keysym.sym == SDLK_u)
+ input5.bit.b1 = !input5.bit.b1;
+ else if (event.key.keysym.sym == SDLK_i)
+ input5.bit.b0 = !input5.bit.b0;
+
+ // Quick'n'Dirty save state handling... :-P
+ else if (event.key.keysym.sym == SDLK_F8)
+ SaveThunderState("thun0001.state");
+ else if (event.key.keysym.sym == SDLK_F9)
+ LoadThunderState("thun0001.state");
+#else
+ else if (event.key.keysym.sym == SDLK_1)
+ input1.bit.b0 = 0;
+ else if (event.key.keysym.sym == SDLK_2)
+ input1.bit.b1 = 0;
+ else if (event.key.keysym.sym == SDLK_3)
+ input1.bit.b2 = 0;
+ else if (event.key.keysym.sym == SDLK_4)
+ input1.bit.b3 = 0;
+ else if (event.key.keysym.sym == SDLK_5)
+ input1.bit.b4 = 0;
+ else if (event.key.keysym.sym == SDLK_6)
+ input1.bit.b5 = 0;
+ else if (event.key.keysym.sym == SDLK_7)
+ input1.bit.b6 = 0;
+ else if (event.key.keysym.sym == SDLK_8)
+ input1.bit.b7 = 0;
+
+ else if (event.key.keysym.sym == SDLK_q)
+ input2.bit.b0 = 0;
+ else if (event.key.keysym.sym == SDLK_w)
+ input2.bit.b1 = 0;
+ else if (event.key.keysym.sym == SDLK_e)
+ input2.bit.b2 = 0;
+ else if (event.key.keysym.sym == SDLK_r)
+ input2.bit.b3 = 0;
+ else if (event.key.keysym.sym == SDLK_t)
+ input2.bit.b4 = 0;
+ else if (event.key.keysym.sym == SDLK_y)
+ input2.bit.b5 = 0;
+ else if (event.key.keysym.sym == SDLK_u)
+ input2.bit.b6 = 0;
+ else if (event.key.keysym.sym == SDLK_i)
+ input2.bit.b7 = 0;
+
+ else if (event.key.keysym.sym == SDLK_a)
+ input3.bit.b0 = 0;
+ else if (event.key.keysym.sym == SDLK_s)
+ input3.bit.b1 = 0;
+ else if (event.key.keysym.sym == SDLK_d)
+ input3.bit.b2 = 0;
+ else if (event.key.keysym.sym == SDLK_f)
+ input3.bit.b3 = 0;
+ else if (event.key.keysym.sym == SDLK_g)
+ input3.bit.b4 = 0;
+#endif
+
+ break;
+ case SDL_KEYUP:
+#if 1
+ if (event.key.keysym.sym == SDLK_5)
+ input1.bit.b5 = 1;
+ else if (event.key.keysym.sym == SDLK_1)
+ input1.bit.b6 = 1;
+ else if (event.key.keysym.sym == SDLK_2)
+ input2.bit.b6 = 1;
+ else if (event.key.keysym.sym == SDLK_c)
+ input3.bit.b5 = 1;
+ else if (event.key.keysym.sym == SDLK_z)
+ input3.bit.b4 = 1;
+ else if (event.key.keysym.sym == SDLK_s)
+ input2.bit.b2 = 1;
+ else if (event.key.keysym.sym == SDLK_x)
+ input1.bit.b2 = 1;
+ else if (event.key.keysym.sym == SDLK_k) // (Q) Jump
+ input1.bit.b1 = 1;
+ else if (event.key.keysym.sym == SDLK_l) // (E) Fire
+ input3.bit.b3 = 1;
+#else
+ if (event.key.keysym.sym == SDLK_1)
+ input1.bit.b0 = 1;
+ else if (event.key.keysym.sym == SDLK_2)
+ input1.bit.b1 = 1;
+ else if (event.key.keysym.sym == SDLK_3)
+ input1.bit.b2 = 1;
+ else if (event.key.keysym.sym == SDLK_4)
+ input1.bit.b3 = 1;
+ else if (event.key.keysym.sym == SDLK_5)
+ input1.bit.b4 = 1;
+ else if (event.key.keysym.sym == SDLK_6)
+ input1.bit.b5 = 1;
+ else if (event.key.keysym.sym == SDLK_7)
+ input1.bit.b6 = 1;
+ else if (event.key.keysym.sym == SDLK_8)
+ input1.bit.b7 = 1;
+
+ else if (event.key.keysym.sym == SDLK_q)
+ input2.bit.b0 = 1;
+ else if (event.key.keysym.sym == SDLK_w)
+ input2.bit.b1 = 1;
+ else if (event.key.keysym.sym == SDLK_e)
+ input2.bit.b2 = 1;
+ else if (event.key.keysym.sym == SDLK_r)
+ input2.bit.b3 = 1;
+ else if (event.key.keysym.sym == SDLK_t)
+ input2.bit.b4 = 1;
+ else if (event.key.keysym.sym == SDLK_y)
+ input2.bit.b5 = 1;
+ else if (event.key.keysym.sym == SDLK_u)
+ input2.bit.b6 = 1;
+ else if (event.key.keysym.sym == SDLK_i)
+ input2.bit.b7 = 1;
+
+ else if (event.key.keysym.sym == SDLK_a)
+ input3.bit.b0 = 1;
+ else if (event.key.keysym.sym == SDLK_s)
+ input3.bit.b1 = 1;
+ else if (event.key.keysym.sym == SDLK_d)
+ input3.bit.b2 = 1;
+ else if (event.key.keysym.sym == SDLK_f)
+ input3.bit.b3 = 1;
+ else if (event.key.keysym.sym == SDLK_g)
+ input3.bit.b4 = 1;
+#endif
+
+ break;
+ }
+ }
+
+#if 0
if (keys[SDLK_ESCAPE])
running = false; // ESC to exit...
DeactivateGUI();
else
ActivateGUI();
+
debounce = 10;
}
}
}
if (keys[SDLK_RETURN]) // Return
{
- uint8 retval = UserSelectedSomething();
+ uint8_t retval = UserSelectedSomething();
+
if (retval == EXIT)
running = false;
+
if (retval == REFRESH)
{
refresh2 = !refresh2;
SetRefreshRate(refresh2);
}
}
+
if (keys[SDLK_1])
gram1[0x427A] = 1; // (1)
+
if (keys[SDLK_2])
gram1[0x427C] = 1; // (2)
+
if (keys[SDLK_3])
gram1[0x427E] = 1; // (3)
+
if (keys[SDLK_5])
gram1[0x4280] = 1; // (5)
+
if (keys[SDLK_q] | keys[29])
gram1[0x4276] = 1; // (Q) Jump
+
if (keys[SDLK_w])
gram1[0x426A] = 1; // (W)
+
if (fire_debounce)
fire_debounce--;
+
if (keys[SDLK_e] | keys[56]) // (E) Fire
{
if (!fire_debounce)
fire_debounce = 2;
}
}
+
if (keys[SDLK_r])
gram1[0x426C] = 1; // (R)
+
if (keys[SDLK_t])
gram1[0x4262] = 1; // (T)
+
if (keys[SDLK_y])
gram1[0x4260] = 1; // (Y)
+
if (keys[SDLK_F10])
gram1[0x41A5]++; // Coin? (F10)
+
if (keys[SDLK_z])
gram1[0x4189]++; // ? (Z) credits l dig
+
if (keys[SDLK_x])
gram1[0x418A]++; // ? (X) credits r dig
+
if (keys[SDLK_c])
gram1[0x418C]++; // ? (C) Start
+
if (keys[SDLK_v])
gram1[0x418D]++; // ? (V)
+
if (keys[SDLK_F7])
SpawnSound(USERSOUND, 0); // Do user sound (F7)
-// if (keys[SDLK_F8])
-// {
-// gram1[0x4380] = 0; // (F8) kill music (this worx)
-// charbase = false; // Switch chars out...
-// }
-// if (keys[SDLK_F9]) gram1[0x4285] = 1; // (F9) strobe unknown loc
- if (keys[SDLK_F11]) // (F11)
- {
- Execute6809(&cpu1, 10);
- Execute6809(&cpu2, 10);
- }
-// }
-//F12 is used above, but the values are ignored. So we'll do it here too.
- if (keys[SDLK_F12])
- {
- cpu1.cpuFlags |= V6809_ASSERT_LINE_RESET;
- cpu2.cpuFlags |= V6809_ASSERT_LINE_RESET;
- }
- if (keys[SDLK_d]) // (D) start disassembly
- disasm = true;
-#if 0
- if (keys[SDLK_k])
- gram1[0x5606] = 0x00;
- if (keys[SDLK_l])
- {
- gram1[0x5607] = 0x01; // Hangs here... (CPU #1 waiting...)
- WriteLog("\nMAIN: Stuffed $01 in $5607!!!\n\n");
- }
- if (keys[SDLK_o])
- {
- gram1[0x5FF3] = 0x02;
- WriteLog("\nMAIN: Stuffed $02 in $5FF3!!!\n\n");
- }
#endif
-
- if (enable_cpu)
-// if (true)
- {
- // We can do this here because we're not executing the cores yet.
- cpu1.cpuFlags |= V6809_ASSERT_LINE_IRQ;
- cpu2.cpuFlags |= V6809_ASSERT_LINE_IRQ;
+ // We can do this here because we're not executing the cores yet.
+ cpu1.cpuFlags |= V6809_LINE_IRQ;
+ cpu2.cpuFlags |= V6809_LINE_IRQ;
+ mcu.cpuFlags |= V63701_LINE_IRQ;
// while (cpu1.clock < 25000)
// 1.538 MHz = 25633.333... cycles per frame (1/60 s)
// 25600 cycles/frame
// 40 works, until it doesn't... :-P
// 640 * 40
// 800 * 32
+// 20 seems to work... :-)
// Interesting, putting IRQs at 30 Hz makes it run at the correct speed. Still hangs in the demo, though.
- for(uint32 i=0; i<640; i++)
-// for(uint32 i=0; i<1280; i++)
- {
- // Gay, but what are ya gonna do?
- // There's better ways, such as keeping track of when slave writes to master, etc...
- Execute6809(&cpu1, 40);
- Execute6809(&cpu2, 40);
- }
- } // END: enable_cpu
-
-// if (refresh_++ == 1) // 30 Hz...
-// {
-// if (scr_type)
-// BlitWilliamsScreen(gram1); // Display the screen...
-// else
-// BlitChar(screen, chr_rom, gram1);
-// refresh_ = (refresh2 ? 1 : 0); // 60/30 Hz...
-// }
-
-#if 1
-//temp, for testing...
-BlitChar(screen, chr_rom, gram1);
-#endif
- // Speed throttling happens here...
- while (SDL_GetTicks() - oldTicks < 16) // Actually, it's 16.66... Need to account for that somehow
-// while (SDL_GetTicks() - oldTicks < 32) // Actually, it's 16.66... Need to account for that somehow
- SDL_Delay(1); // Release our timeslice...
-
- oldTicks = SDL_GetTicks();
-//cout << "Finished frame..." << endl;
- }
-
-// Stop_audio_output();
-// ReleaseTimer();
-// ReleaseKeyboard(); // Release the interrupt...
-// RestoreOldMode(); // Restore screen
- if (brk && (cpu1.pc == brkpnt))
- cout << "CPU 1: Break at " << hex << cpu1.pc << endl;
- if (brk2 && (cpu2.pc == brkpnt2))
- cout << "CPU 2: Break at " << hex << cpu2.pc << endl;
-
- lbuff[0] = 'q'; // Temp kludge...
- }
- else if (lbuff[0] == 'b') // Set/clear breakpoint
+// for(int i=0; i<640; i++)
+ for(int i=0; i<1280; i++)
{
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32;
- brkpnt = htod(lbuff);
- brk = true;
- cout << "Breakpoint #1 set at " << hex << brkpnt << dec << endl;
- }
- else
- {
- brk = false;
- cout << "Breakpoint cleared" << endl;
- }
+ // Gay, but what are ya gonna do?
+ // There's better ways, such as keeping track of when slave writes to master, etc...
+// Execute6809(&cpu1, 40);
+// Execute6809(&cpu2, 40);
+ Execute6809(&cpu1, 20);
+ Execute6809(&cpu2, 20);
+
+ // MCU runs at 1,536,000 Hz
+ // 1536000 / 60 / 640 == 40
+// Execute63701(&mcu, 40);
+ Execute63701(&mcu, 20);
}
- else if (lbuff[0] == 'a') // Set/clear breakpoint #2
- {
- if (lbuff[1] != 0)
- {
- lbuff[0] = 32;
- brkpnt2 = htod(lbuff);
- brk2 = true;
- cout << "Breakpoint #2 set at " << hex << brkpnt2 << dec << endl;
- }
- else
- {
- brk2 = false;
- cout << "Breakpoint cleared" << endl;
- }
- }
- else if (lbuff[0] == 'i') // Inspect registers
- {
- printf("CPU1: A=%02X B=%02X CC=%02X DP=%02X X=%04X Y=%04X S=%04X U=%04X PC=%04X",
- cpu1.a, cpu1.b, cpu1.cc, cpu1.dp, cpu1.x, cpu1.y, cpu1.s, cpu1.u, cpu1.pc);
- cout << " iclk=" << dec << cpu1.clock << endl;
- printf("CPU2: A=%02X B=%02X CC=%02X DP=%02X X=%04X Y=%04X S=%04X U=%04X PC=%04X",
- cpu2.a, cpu2.b, cpu2.cc, cpu2.dp, cpu2.x, cpu2.y, cpu2.s, cpu2.u, cpu2.pc);
- cout << " iclk=" << dec << cpu2.clock << endl;
- if (brk)
- cout << "Breakpoint #1 set at " << hex << brkpnt << dec << endl;
- if (brk2)
- cout << "Breakpoint #2 set at " << hex << brkpnt2 << dec << endl;
- }
- else if (strncmp(lbuff, "swap", 4) == 0) // Swap ROMs
- {
- looking_at_rom = !looking_at_rom;
- cout << "Swapped: Looking at ";
- (looking_at_rom ? cout << "ROM #1" : cout << "ROM #2");
- cout << endl;
- }
- else if (strncmp(lbuff, "seek", 4) == 0) // Seek non-zero bytes in RAM
- {
- if (lbuff[4] != 0)
- {
- for(int i=0; i<4; i++)
- lbuff[i] = 32;
- dpc = htod(lbuff);
- }
- do
- {
- x = gram1[dpc++];
- }
- while ((x == 0) && (dpc != 0xFFFF)); // Keep going until something found
- dpc--;
-
- printf("%04X: ", dpc); // Show data found...
- for(int i=0; i<16; i++)
- printf("%02X ", gram1[(uint16)(dpc+i)]);
- cout << " ";
- for(int i=0; i<16; i++)
- {
- uint8 a = gram1[dpc++];
- if (a<10)
- cout << (char)(a+48);
- if ((a>9) && (a<37))
- cout << (char)(a+55);
- if (a>36)
- cout << ".";
- }
- cout << endl;
- }
- else if (lbuff[0] == 'v') // View screen
+
+ BlitChar(charROM, gram1);
+
+ // Make sure that the sprite RAM lags by one frame... :-)
+ if (copySprites)
{
-// SetVESA2(); // Set up screen
- BlitChar(screen, chr_rom, gram1);
- getch();
-// RestoreOldMode();
+ CopySprites();
+ copySprites = false;
}
- if (lbuff[0] == 'q')
- active = false; //break; // Quit
- }
+ frameTickCount++;
- SDL_Quit(); // Shut down SDL
+ if (frameTickCount == 3)
+ frameTickCount = 0;
- for(int i=0; i<16; i++)
- if (psg_adrs[i])
- delete[] psg_adrs[i]; // Deallocate if loaded
+ // Speed throttling happens here...
+ // Actually, it's 16.66... Need to account for that somehow [DONE]
+ while (SDL_GetTicks() - oldTicks < (16 + (frameTickCount == 2 ? 1 : 0)))
+ SDL_Delay(1); // Release our timeslice...
- for(int i=0; i<14; i++)
- if (fm_adrs[i])
- delete[] fm_adrs[i]; // Deallocate if loaded
+ oldTicks = SDL_GetTicks();
+ }
+ SDL_Quit();
LogDone();
return 1;
}
-
-#if 0
-Rolling Thunder Memory map
---------------------------
-Most of the decoding is done by custom chips (CUS47 and CUS41), so the memory
-map is inferred by program behaviour. The customs also handle internally irq
-and watchdog.
-The main CPU memory map is the same in all games because CUS47 is used by all
-games. The sub CPU and sound CPU, on the other hand, change because CUS41 is
-replaced by other chips.
-All RAM is shared between main and sub CPU, except for sound RAM which is shared
-between main and sound CPU; the portion of object RAM that is overlapped by sound
-RAM is used exclusively by the sub CPU.
-
-MAIN CPU:
-
-Address Dir Data Name Description
-------------------- --- -------- --------- -----------------------
-000x xxxx xxxx xxxx R/W xxxxxxxx SCROLL0 tilemap 0/1 RAM (shared with sub CPU)
-001x xxxx xxxx xxxx R/W xxxxxxxx SCROLL1 tilemap 2/3 RAM (shared with sub CPU)
-0100 00xx xxxx xxxx R/W xxxxxxxx SOUND sound RAM (through CUS30, shared with MCU)
-0100 0000 xxxx xxxx R/W xxxxxxxx portion holding the sound wave data
-0100 0001 00xx xxxx R/W xxxxxxxx portion holding the sound registers
-010x xxxx xxxx xxxx R/W xxxxxxxx OBJECT work RAM (shared with sub CPU) [1]
-0101 1xxx xxxx xxxx R/W xxxxxxxx portion holding sprite registers
-011x xxxx xxxx xxxx R xxxxxxxx ROM 9D program ROM (banked) [2]
-1xxx xxxx xxxx xxxx R xxxxxxxx ROM 9C program ROM
-1000 00-- ---- ---- W -------- watchdog reset (RES generated by CUS47)
-1000 01-- ---- ---- W -------- main CPU irq acknowledge (IRQ generated by CUS47)
-1000 1x-- ---- ---- W -------- BANK tile gfx bank select (data is in A10) (latch in CUS47)
-1001 00-- ---- -x0x W xxxxxxxx LATCH0 tilemap 0/1 X scroll + priority
-1001 00-- ---- -x10 W xxxxxxxx LATCH0 tilemap 0/1 Y scroll
-1001 00-- ---- --11 W ------xx BAMNKM ROM 9D bank select
-1001 01-- ---- -x0x W xxxxxxxx LATCH1 tilemap 2/3 X scroll + priority
-1001 01-- ---- -x10 W xxxxxxxx LATCH1 tilemap 2/3 Y scroll
-1001 01-- ---- --11 W ------xx BAMNKS ROM 12D bank select
-1100 00-- ---- ---- W xxxxxxxx BACKCOLOR background color
-
-[1] Note that this is partially overlapped by sound RAM
-[2] In Rolling Thunder and others, replaced by the ROM/voice expansion board
-
-
-SUB CPU:
-
-Address Dir Data Name Description
-------------------- --- -------- --------- -----------------------
-000x xxxx xxxx xxxx R/W xxxxxxxx SUBOBJ work RAM (shared with main CPU)
-0001 1xxx xxxx xxxx R/W xxxxxxxx portion holding sprite registers
-001x xxxx xxxx xxxx R/W xxxxxxxx SUBSCR0 tilemap 0/1 RAM (shared with main CPU)
-010x xxxx xxxx xxxx R/W xxxxxxxx SUBSCR1 tilemap 2/3 RAM (shared with main CPU)
-011x xxxx xxxx xxxx R xxxxxxxx ROM 12D program ROM (banked) [1]
-1xxx xxxx xxxx xxxx R xxxxxxxx ROM 12C program ROM
-1000 0--- ---- ---- W -------- watchdog reset (MRESET generated by CUS41)
-1000 1--- ---- ---- W -------- main CPU irq acknowledge (generated by CUS41)
-1101 0--- ---- -x0x W xxxxxxxx LATCH0 tilemap 0/1 X scroll + priority
-1101 0--- ---- -x10 W xxxxxxxx LATCH0 tilemap 0/1 Y scroll
-1101 0--- ---- --11 W ------xx BAMNKM ROM 9D bank select
-1101 1--- ---- -x0x W xxxxxxxx LATCH1 tilemap 2/3 X scroll + priority
-1101 1--- ---- -x10 W xxxxxxxx LATCH1 tilemap 2/3 Y scroll
-1101 1--- ---- --11 W ------xx BAMNKS ROM 12D bank select
-
-[1] Only used by Rolling Thunder
-
-
-MCU:
-
-Address Dir Data Name Description
-------------------- --- -------- --------- -----------------------
-0000 0000 xxxx xxxx MCU internal registers, timers, ports and RAM
-0001 xxxx xxxx xxxx R/W xxxxxxxx RAM 3F sound RAM (through CUS30, partially shared with main CPU)
-0001 0000 xxxx xxxx R/W xxxxxxxx portion holding the sound wave data
-0001 0001 00xx xxxx R/W xxxxxxxx portion holding the sound registers
-0010 0--- --00 ---x R/W xxxxxxxx YMCS YM2151
-0010 0--- --01 ---- n.c.
-0010 0--- --10 ---- R xxxxxxxx PORTA switch inputs
-0010 0--- --11 ---- R xxxxxxxx PORTB dip switches
-01xx xxxx xxxx xxxx R xxxxxxxx ROM 6B program ROM (lower half)
-10xx xxxx xxxx xxxx R xxxxxxxx ROM 6B program ROM (upper half)
-1011 0--- ---- ---- W unknown (CUS41)
-1011 1--- ---- ---- W unknown (CUS41)
-1111 xxxx xxxx xxxx R xxxxxxxx MCU internal ROM
-
-
-Notes:
------
-- we are using an unusually high CPU interleave factor (800) to avoid hangs
- in rthunder. The two 6809 in this game synchronize using a semaphore at
- 5606/5607 (CPU1) 1606/1607 (CPU2). CPU1 clears 5606, does some quick things,
- and then increments 5606. While it does its quick things (which require
- about 40 clock cycles) it expects CPU2 to clear 5607.
- Raising the interleave factor to 1000 makes wndrmomo crash during attract
- mode. I haven't investigated on the cause.
-
-- There are two watchdogs, one per CPU (or maybe three). Handling them
- separately is necessary to allow entering service mode without manually
- resetting in rthunder and genpeitd: only one of the CPUs stops writing to
- the watchdog.
-
-- The sprite hardware buffers spriteram: the program writes the sprite list to
- offsets 4-9 of every 16-byte block, then at the end writes to offset 0x1ff2 of
- sprite RAM to signal the chip that the list is complete. The chip will copy
- the list from 4-9 to 10-15 and use it from there. This has not been verified
- on the real hardware, but it is the most logical way of doing it.
- Emulating this behaviour and not using an external buffer is important in
- rthunder: when you insert a coin, the whole sprite RAM is cleared, but 0x1ff2
- is not written to. If we buffered spriteram to an external buffer, this would
- cause dangling sprites because the buffer would not be updated.
-
-- spriteram buffering fixes sprite lag, but causes a glitch in rthunder when
- entering a door. The *closed* door is made of tiles, but the *moving* door is
- made of sprites. Since sprites are delayed by 1 frame, when you enter a door
- there is one frame where neither the tile-based closed door nor the
- sprite-based moving door is shown, so it flickers. This behavior has been
- confirmed on a real PCB.
-
-TODO:
-----
-- The two unknown writes for the MCU are probably watchdog reset and irq acknowledge,
- but they don't seem to work as expected. During the first few frames they are
- written out of order and hooking them up in the usual way causes the MCU to
- stop receiving interrupts.
-
-#endif
projects / thunder / blobdiff