X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ftom.cpp;h=845f1551f37f1b88548a3e796ccc39a977300ee6;hb=83fce768d2c1e0e16691c092ea02d64e2b280fad;hp=f634284a8dad4f99f59b1f910ce469a28aa4a1bf;hpb=a44520039d2164202dd5fbde323cfb0b36fafada;p=virtualjaguar diff --git a/src/tom.cpp b/src/tom.cpp index f634284..845f155 100644 --- a/src/tom.cpp +++ b/src/tom.cpp @@ -1,11 +1,20 @@ // // TOM Processing // -// by cal2 +// Originally by David Raingeard (cal2) // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS) -// Cleanups and endian wrongness amelioration by James L. Hammons +// Cleanups and endian wrongness amelioration by James Hammons +// (C) 2010 Underground Software +// +// JLH = James Hammons +// +// Who When What +// --- ---------- ------------------------------------------------------------- +// JLH 01/16/2010 Created this log ;-) +// JLH 01/20/2011 Change rendering to RGBA, removed unnecessary code +// // Note: Endian wrongness probably stems from the MAME origins of this emu and -// the braindead way in which MAME handles memory. :-) +// the braindead way in which MAME used to handle memory. :-} // // Note: TOM has only a 16K memory space // @@ -244,11 +253,22 @@ // F02298 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_Z0 - Z0 // ------------------------------------------------------------ -#include #include "tom.h" -#include "gpu.h" -#include "objectp.h" + +#include // For memset() +#include // For rand() +#include "blitter.h" #include "cry2rgb.h" +#include "event.h" +#include "gpu.h" +#include "jaguar.h" +#include "log.h" +#include "m68000/m68kinterface.h" +//#include "memory.h" +#include "op.h" +#include "settings.h" + +#define NEW_TIMER_SYSTEM // TOM registers (offset from $F00000) @@ -256,66 +276,108 @@ #define MEMCON2 0x02 #define HC 0x04 #define VC 0x06 +#define OLP 0x20 // Object list pointer +#define OBF 0x26 // Object processor flag #define VMODE 0x28 #define MODE 0x0006 // Line buffer to video generator mode #define BGEN 0x0080 // Background enable (CRY & RGB16 only) #define VARMOD 0x0100 // Mixed CRY/RGB16 mode (only works in MODE 0!) #define PWIDTH 0x0E00 // Pixel width in video clock cycles (value written + 1) +#define BORD1 0x2A // Border green/red values (8 BPP) +#define BORD2 0x2C // Border blue value (8 BPP) #define HP 0x2E // Values range from 1 - 1024 (value written + 1) -#define HBB 0x30 +#define HBB 0x30 // Horizontal blank begin #define HBE 0x32 -#define HDB1 0x38 +#define HS 0x34 // Horizontal sync +#define HVS 0x36 // Horizontal vertical sync +#define HDB1 0x38 // Horizontal display begin 1 #define HDB2 0x3A #define HDE 0x3C #define VP 0x3E // Value ranges from 1 - 2048 (value written + 1) -#define VBB 0x40 +#define VBB 0x40 // Vertical blank begin #define VBE 0x42 -#define VS 0x44 -#define VDB 0x46 +#define VS 0x44 // Vertical sync +#define VDB 0x46 // Vertical display begin #define VDE 0x48 -#define VI 0x4E -#define BG 0x58 +#define VEB 0x4A // Vertical equalization begin +#define VEE 0x4C // Vertical equalization end +#define VI 0x4E // Vertical interrupt +#define PIT0 0x50 +#define PIT1 0x52 +#define HEQ 0x54 // Horizontal equalization end +#define BG 0x58 // Background color #define INT1 0xE0 +//NOTE: These arbitrary cutoffs are NOT taken into account for PAL jaguar screens. !!! FIX !!! [DONE] + +// Arbitrary video cutoff values (i.e., first/last visible spots on a TV, in HC ticks) +// Also note that VC is in *half* lines, i.e. divide by 2 to get the scanline +/*#define LEFT_VISIBLE_HC 208 +#define RIGHT_VISIBLE_HC 1528//*/ +// These were right for Rayman, but that one is offset on a real TV too. +//#define LEFT_VISIBLE_HC 208 +//#define RIGHT_VISIBLE_HC 1488 +// This is more like a real TV display... +//#define LEFT_VISIBLE_HC (208 - 32) +//#define RIGHT_VISIBLE_HC (1488 - 32) +// Split the difference? (Seems to be OK for the most part...) + +// (-10 +10)*4 is for opening up the display by 16 pixels (may go to 20). Need to change VIRTUAL_SCREEN_WIDTH to match this as well (went from 320 to 340; this is 4 HCs per one of those pixels). +//NB: Went back to 330. May shrink more. :-) +//#define LEFT_VISIBLE_HC (208 - 16 - (8 * 4)) +//#define LEFT_VISIBLE_HC (208 - 16 - (3 * 4)) +#define LEFT_VISIBLE_HC (208 - 16 - (1 * 4)) +//#define RIGHT_VISIBLE_HC (1488 - 16 + (10 * 4)) +#define RIGHT_VISIBLE_HC (LEFT_VISIBLE_HC + (VIRTUAL_SCREEN_WIDTH * 4)) +//#define TOP_VISIBLE_VC 25 +//#define BOTTOM_VISIBLE_VC 503 +#define TOP_VISIBLE_VC 31 +#define BOTTOM_VISIBLE_VC 511 + +//Are these PAL horizontals correct? +//They seem to be for the most part, but there are some games that seem to be +//shifted over to the right from this "window". +//#define LEFT_VISIBLE_HC_PAL (208 - 16 - (4 * 4)) +//#define LEFT_VISIBLE_HC_PAL (208 - 16 - (-1 * 4)) +#define LEFT_VISIBLE_HC_PAL (208 - 16 - (-3 * 4)) +//#define RIGHT_VISIBLE_HC_PAL (1488 - 16 + (10 * 4)) +#define RIGHT_VISIBLE_HC_PAL (LEFT_VISIBLE_HC_PAL + (VIRTUAL_SCREEN_WIDTH * 4)) +#define TOP_VISIBLE_VC_PAL 67 +#define BOTTOM_VISIBLE_VC_PAL 579 + //This can be defined in the makefile as well... //(It's easier to do it here, though...) //#define TOM_DEBUG -extern uint32 jaguar_mainRom_crc32; -extern uint8 objectp_running; - -static uint8 * tom_ram_8; -uint32 tom_width, tom_height, tom_real_internal_width; -static uint32 tom_timer_prescaler; -static uint32 tom_timer_divider; -static int32 tom_timer_counter; -//uint32 tom_scanline; -//uint32 hblankWidthInPixels = 0; +uint8 tomRam8[0x4000]; +uint32 tomWidth, tomHeight; +uint32 tomTimerPrescaler; +uint32 tomTimerDivider; +int32 tomTimerCounter; uint16 tom_jerry_int_pending, tom_timer_int_pending, tom_object_int_pending, tom_gpu_int_pending, tom_video_int_pending; -uint16 * tom_cry_rgb_mix_lut; -static char * videoMode_to_str[8] = +// These are set by the "user" of the Jaguar core lib, since these are +// OS/system dependent. +uint32 * screenBuffer; +uint32 screenPitch; + +static const char * videoMode_to_str[8] = { "16 BPP CRY", "24 BPP RGB", "16 BPP DIRECT", "16 BPP RGB", "Mixed mode", "24 BPP RGB", "16 BPP DIRECT", "16 BPP RGB" }; -typedef void (render_xxx_scanline_fn)(int16 *); +typedef void (render_xxx_scanline_fn)(uint32 *); // Private function prototypes -void tom_render_16bpp_cry_scanline(int16 * backbuffer); -void tom_render_24bpp_scanline(int16 * backbuffer); -void tom_render_16bpp_direct_scanline(int16 * backbuffer); -void tom_render_16bpp_rgb_scanline(int16 * backbuffer); -void tom_render_16bpp_cry_rgb_mix_scanline(int16 * backbuffer); +void tom_render_16bpp_cry_scanline(uint32 * backbuffer); +void tom_render_24bpp_scanline(uint32 * backbuffer); +void tom_render_16bpp_direct_scanline(uint32 * backbuffer); +void tom_render_16bpp_rgb_scanline(uint32 * backbuffer); +void tom_render_16bpp_cry_rgb_mix_scanline(uint32 * backbuffer); -void tom_render_16bpp_cry_stretch_scanline(int16 * backbuffer); -void tom_render_24bpp_stretch_scanline(int16 * backbuffer); -void tom_render_16bpp_direct_stretch_scanline(int16 * backbuffer); -void tom_render_16bpp_rgb_stretch_scanline(int16 * backbuffer); -void tom_render_16bpp_cry_rgb_mix_stretch_scanline(int16 * backbuffer); - -render_xxx_scanline_fn * scanline_render_normal[]= +//render_xxx_scanline_fn * scanline_render_normal[] = +render_xxx_scanline_fn * scanline_render[] = { tom_render_16bpp_cry_scanline, tom_render_24bpp_scanline, @@ -327,164 +389,413 @@ render_xxx_scanline_fn * scanline_render_normal[]= tom_render_16bpp_rgb_scanline }; -render_xxx_scanline_fn * scanline_render_stretch[]= -{ - tom_render_16bpp_cry_stretch_scanline, - tom_render_24bpp_stretch_scanline, - tom_render_16bpp_direct_stretch_scanline, - tom_render_16bpp_rgb_stretch_scanline, - tom_render_16bpp_cry_rgb_mix_stretch_scanline, - tom_render_24bpp_stretch_scanline, - tom_render_16bpp_direct_stretch_scanline, - tom_render_16bpp_rgb_stretch_scanline, -}; - -render_xxx_scanline_fn * scanline_render[8]; - - -void tom_calc_cry_rgb_mix_lut(void) +// Screen info for various games [PAL]... +/* +BIOS +TOM: Horizontal Period written by M68K: 850 (+1*2 = 1702) +TOM: Horizontal Blank Begin written by M68K: 1711 +TOM: Horizontal Blank End written by M68K: 158 +TOM: Horizontal Display End written by M68K: 1696 +TOM: Horizontal Display Begin 1 written by M68K: 166 +TOM: Vertical Period written by M68K: 623 (non-interlaced) +TOM: Vertical Blank End written by M68K: 34 +TOM: Vertical Display Begin written by M68K: 46 +TOM: Vertical Display End written by M68K: 526 +TOM: Vertical Blank Begin written by M68K: 600 +TOM: Vertical Sync written by M68K: 618 +TOM: Horizontal Display End written by M68K: 1665 +TOM: Horizontal Display Begin 1 written by M68K: 203 +TOM: Vertical Display Begin written by M68K: 38 +TOM: Vertical Display End written by M68K: 518 +TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 151) +TOM: Horizontal Display End written by M68K: 1713 +TOM: Horizontal Display Begin 1 written by M68K: 157 +TOM: Vertical Display Begin written by M68K: 35 +TOM: Vertical Display End written by M68K: 2047 +Horizontal range: 157 - 1713 (width: 1557 / 4 = 389.25, / 5 = 315.4) + +Asteroid +TOM: Horizontal Period written by M68K: 845 (+1*2 = 1692) +TOM: Horizontal Blank Begin written by M68K: 1700 +TOM: Horizontal Blank End written by M68K: 122 +TOM: Horizontal Display End written by M68K: 1600 +TOM: Horizontal Display Begin 1 written by M68K: 268 +TOM: Vertical Period written by M68K: 523 (non-interlaced) +TOM: Vertical Blank End written by M68K: 40 +TOM: Vertical Display Begin written by M68K: 44 +TOM: Vertical Display End written by M68K: 492 +TOM: Vertical Blank Begin written by M68K: 532 +TOM: Vertical Sync written by M68K: 513 +TOM: Video Mode written by M68K: 04C7. PWIDTH = 3, MODE = 16 BPP RGB, flags: BGEN (VC = 461) + +Rayman +TOM: Horizontal Display End written by M68K: 1713 +TOM: Horizontal Display Begin 1 written by M68K: 157 +TOM: Vertical Display Begin written by M68K: 35 +TOM: Vertical Display End written by M68K: 2047 +TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 89) +TOM: Horizontal Display Begin 1 written by M68K: 208 +TOM: Horizontal Display End written by M68K: 1662 +TOM: Vertical Display Begin written by M68K: 100 +TOM: Vertical Display End written by M68K: 2047 +TOM: Video Mode written by M68K: 07C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN VARMOD (VC = 205) +Horizontal range: 208 - 1662 (width: 1455 / 4 = 363.5) + +Alien vs Predator +TOM: Vertical Display Begin written by M68K: 96 +TOM: Vertical Display End written by M68K: 2047 +TOM: Horizontal Display Begin 1 written by M68K: 239 +TOM: Horizontal Display End written by M68K: 1692 +TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 378) +TOM: Vertical Display Begin written by M68K: 44 +TOM: Vertical Display End written by M68K: 2047 +TOM: Horizontal Display Begin 1 written by M68K: 239 +TOM: Horizontal Display End written by M68K: 1692 +TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 559) +TOM: Vertical Display Begin written by M68K: 84 +TOM: Vertical Display End written by M68K: 2047 +TOM: Horizontal Display Begin 1 written by M68K: 239 +TOM: Horizontal Display End written by M68K: 1692 +TOM: Vertical Display Begin written by M68K: 44 +TOM: Vertical Display End written by M68K: 2047 +TOM: Horizontal Display Begin 1 written by M68K: 239 +TOM: Horizontal Display End written by M68K: 1692 +Horizontal range: 239 - 1692 (width: 1454 / 4 = 363.5) + +*/ + +// Screen info for various games [NTSC]... +/* +Doom +TOM: Horizontal Display End written by M68K: 1727 +TOM: Horizontal Display Begin 1 written by M68K: 123 +TOM: Vertical Display Begin written by M68K: 25 +TOM: Vertical Display End written by M68K: 2047 +TOM: Video Mode written by M68K: 0EC1. PWIDTH = 8, MODE = 16 BPP CRY, flags: BGEN (VC = 5) +Also does PWIDTH = 4... +Vertical resolution: 238 lines + +Rayman +TOM: Horizontal Display End written by M68K: 1727 +TOM: Horizontal Display Begin 1 written by M68K: 123 +TOM: Vertical Display Begin written by M68K: 25 +TOM: Vertical Display End written by M68K: 2047 +TOM: Vertical Interrupt written by M68K: 507 +TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 92) +TOM: Horizontal Display Begin 1 written by M68K: 208 +TOM: Horizontal Display End written by M68K: 1670 +Display starts at 31, then 52! +Vertical resolution: 238 lines + +Atari Karts +TOM: Horizontal Display End written by M68K: 1727 +TOM: Horizontal Display Begin 1 written by M68K: 123 +TOM: Vertical Display Begin written by M68K: 25 +TOM: Vertical Display End written by M68K: 2047 +TOM: Video Mode written by GPU: 08C7. PWIDTH = 5, MODE = 16 BPP RGB, flags: BGEN (VC = 4) +TOM: Video Mode written by GPU: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 508) +Display starts at 31 (PWIDTH = 4), 24 (PWIDTH = 5) + +Iron Soldier +TOM: Vertical Interrupt written by M68K: 2047 +TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 0) +TOM: Horizontal Display End written by M68K: 1727 +TOM: Horizontal Display Begin 1 written by M68K: 123 +TOM: Vertical Display Begin written by M68K: 25 +TOM: Vertical Display End written by M68K: 2047 +TOM: Vertical Interrupt written by M68K: 507 +TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 369) +TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 510) +TOM: Video Mode written by M68K: 06C3. PWIDTH = 4, MODE = 24 BPP RGB, flags: BGEN (VC = 510) +Display starts at 31 +Vertical resolution: 238 lines +[Seems to be a problem between the horizontal positioning of the 16-bit CRY & 24-bit RGB] + +JagMania +TOM: Horizontal Period written by M68K: 844 (+1*2 = 1690) +TOM: Horizontal Blank Begin written by M68K: 1713 +TOM: Horizontal Blank End written by M68K: 125 +TOM: Horizontal Display End written by M68K: 1696 +TOM: Horizontal Display Begin 1 written by M68K: 166 +TOM: Vertical Period written by M68K: 523 (non-interlaced) +TOM: Vertical Blank End written by M68K: 24 +TOM: Vertical Display Begin written by M68K: 46 +TOM: Vertical Display End written by M68K: 496 +TOM: Vertical Blank Begin written by M68K: 500 +TOM: Vertical Sync written by M68K: 517 +TOM: Vertical Interrupt written by M68K: 497 +TOM: Video Mode written by M68K: 04C1. PWIDTH = 3, MODE = 16 BPP CRY, flags: BGEN (VC = 270) +Display starts at 55 + +Double Dragon V +TOM: Horizontal Display End written by M68K: 1727 +TOM: Horizontal Display Begin 1 written by M68K: 123 +TOM: Vertical Display Begin written by M68K: 25 +TOM: Vertical Display End written by M68K: 2047 +TOM: Vertical Interrupt written by M68K: 507 +TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 9) + +Dino Dudes +TOM: Horizontal Display End written by M68K: 1823 +TOM: Horizontal Display Begin 1 written by M68K: 45 +TOM: Vertical Display Begin written by M68K: 40 +TOM: Vertical Display End written by M68K: 2047 +TOM: Vertical Interrupt written by M68K: 491 +TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 398) +Display starts at 11 (123 - 45 = 78, 78 / 4 = 19 pixels to skip) +Width is 417, so maybe width of 379 would be good (starting at 123, ending at 1639) +Vertical resolution: 238 lines + +Flashback +TOM: Horizontal Display End written by M68K: 1727 +TOM: Horizontal Display Begin 1 written by M68K: 188 +TOM: Vertical Display Begin written by M68K: 1 +TOM: Vertical Display End written by M68K: 2047 +TOM: Vertical Interrupt written by M68K: 483 +TOM: Video Mode written by M68K: 08C7. PWIDTH = 5, MODE = 16 BPP RGB, flags: BGEN (VC = 99) +Width would be 303 with above scheme, but border width would be 13 pixels + +Trevor McFur +Vertical resolution: 238 lines +*/ + +uint32 RGB16ToRGB32[0x10000]; +uint32 CRY16ToRGB32[0x10000]; +uint32 MIX16ToRGB32[0x10000]; + + +#warning "This is not endian-safe. !!! FIX !!!" +void TOMFillLookupTables(void) { - memory_malloc_secure((void **)&tom_cry_rgb_mix_lut, 2 * 0x10000, "CRY/RGB mixed mode LUT"); - - for (uint32 i=0; i<0x10000; i++) + // NOTE: Jaguar 16-bit (non-CRY) color is RBG 556 like so: + // RRRR RBBB BBGG GGGG + for(uint32 i=0; i<0x10000; i++) +//hm. RGB16ToRGB32[i] = 0xFF000000 +// | ((i & 0xF100) >> 8) | ((i & 0xE000) >> 13) +// | ((i & 0x07C0) << 13) | ((i & 0x0700) << 8) +// | ((i & 0x003F) << 10) | ((i & 0x0030) << 4); + RGB16ToRGB32[i] = 0x000000FF + | ((i & 0xF100) << 16) // Red + | ((i & 0x003F) << 18) // Green + | ((i & 0x07C0) << 5); // Blue + + for(uint32 i=0; i<0x10000; i++) { - uint16 color = i; + uint32 cyan = (i & 0xF000) >> 12, + red = (i & 0x0F00) >> 8, + intensity = (i & 0x00FF); - if (color & 0x01) - { - color >>= 1; - color = (color & 0x007C00) | ((color & 0x00003E0) >> 5) | ((color & 0x0000001F) << 5); - } - else - { - uint32 chrm = (color & 0xF000) >> 12, - chrl = (color & 0x0F00) >> 8, - y = color & 0x00FF; - uint16 red = (((uint32)redcv[chrm][chrl]) * y) >> 11, - green = (((uint32)greencv[chrm][chrl]) * y) >> 11, - blue = (((uint32)bluecv[chrm][chrl]) * y) >> 11; - color = (red << 10) | (green << 5) | blue; - } - tom_cry_rgb_mix_lut[i] = color; + uint32 r = (((uint32)redcv[cyan][red]) * intensity) >> 8, + g = (((uint32)greencv[cyan][red]) * intensity) >> 8, + b = (((uint32)bluecv[cyan][red]) * intensity) >> 8; + +//hm. CRY16ToRGB32[i] = 0xFF000000 | (b << 16) | (g << 8) | r; + CRY16ToRGB32[i] = 0x000000FF | (r << 24) | (g << 16) | (b << 8); + MIX16ToRGB32[i] = (i & 0x01 ? RGB16ToRGB32[i] : CRY16ToRGB32[i]); } } -void tom_set_pending_jerry_int(void) + +void TOMSetPendingJERRYInt(void) { tom_jerry_int_pending = 1; } -void tom_set_pending_timer_int(void) + +void TOMSetPendingTimerInt(void) { tom_timer_int_pending = 1; } -void tom_set_pending_object_int(void) + +void TOMSetPendingObjectInt(void) { tom_object_int_pending = 1; } -void tom_set_pending_gpu_int(void) + +void TOMSetPendingGPUInt(void) { tom_gpu_int_pending = 1; } -void tom_set_pending_video_int(void) + +void TOMSetPendingVideoInt(void) { tom_video_int_pending = 1; } -uint8 * tom_get_ram_pointer(void) + +uint8 * TOMGetRamPointer(void) { - return tom_ram_8; + return tomRam8; } -uint8 tom_getVideoMode(void) + +uint8 TOMGetVideoMode(void) { - uint16 vmode = GET16(tom_ram_8, VMODE); + uint16 vmode = GET16(tomRam8, VMODE); return ((vmode & VARMOD) >> 6) | ((vmode & MODE) >> 1); } + //Used in only one place (and for debug purposes): OBJECTP.CPP -uint16 tom_get_vdb(void) +#warning "Used in only one place (and for debug purposes): OBJECTP.CPP !!! FIX !!!" +uint16 TOMGetVDB(void) { -// This in NOT VDB!!! -// return GET16(tom_ram_8, VBE); - return GET16(tom_ram_8, VDB); + return GET16(tomRam8, VDB); } + +#define LEFT_BG_FIX // // 16 BPP CRY/RGB mixed mode rendering // -void tom_render_16bpp_cry_rgb_mix_scanline(int16 * backbuffer) +void tom_render_16bpp_cry_rgb_mix_scanline(uint32 * backbuffer) { - uint16 width = tom_width; - uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; - +//CHANGED TO 32BPP RENDERING + uint16 width = tomWidth; + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; + + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + // Get start position in HC ticks + int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); + // Convert to pixels + startPos /= pwidth; + + if (startPos < 0) + // This is x2 because current_line_buffer is uint8 & we're in a 16bpp mode + current_line_buffer += 2 * -startPos; + else +//This case doesn't properly handle the "start on the right side of virtual screen" case +//Dunno why--looks Ok... +//What *is* for sure wrong is that it doesn't copy the linebuffer's BG pixels... [FIXED NOW] +//This should likely be 4 instead of 2 (?--not sure) +// Actually, there should be NO multiplier, as startPos is expressed in PIXELS +// and so is the backbuffer. +#ifdef LEFT_BG_FIX + { + uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1]; + uint32 pixel = 0x000000FF | (r << 24) | (g << 16) | (b << 8); + + for(int16 i=0; i> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL);// Get start position in HC ticks + startPos /= pwidth; + if (startPos < 0) + current_line_buffer += 2 * -startPos; + else +#ifdef LEFT_BG_FIX + { + uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1]; + uint32 pixel = 0x000000FF | (r << 24) | (g << 16) | (b << 8); + + for(int16 i=0; i> 12, - chrl = (color & 0x0F00) >> 8, - y = (color & 0x00FF); - - uint16 red = (((uint32)redcv[chrm][chrl]) * y) >> 11, - green = (((uint32)greencv[chrm][chrl]) * y) >> 11, - blue = (((uint32)bluecv[chrm][chrl]) * y) >> 11; - - *backbuffer++ = (red << 10) | (green << 5) | blue; + *backbuffer++ = CRY16ToRGB32[color]; width--; } } + // // 24 BPP mode rendering // -void tom_render_24bpp_scanline(int16 * backbuffer) +void tom_render_24bpp_scanline(uint32 * backbuffer) { - uint16 width = tom_width; - uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; - +//CHANGED TO 32BPP RENDERING + uint16 width = tomWidth; + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; + + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); // Get start position in HC ticks + startPos /= pwidth; + if (startPos < 0) + current_line_buffer += 4 * -startPos; + else +#ifdef LEFT_BG_FIX + { + uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1]; + uint32 pixel = 0x000000FF | (r << 24) | (g << 16) | (b << 8); + + for(int16 i=0; i> 3; - uint16 red = (*current_line_buffer++) >> 3; + uint32 g = *current_line_buffer++; + uint32 r = *current_line_buffer++; current_line_buffer++; - uint16 blue = (*current_line_buffer++) >> 3; - *backbuffer++ = (red << 10) | (green << 5) | blue; + uint32 b = *current_line_buffer++; +//hm. *backbuffer++ = 0xFF000000 | (b << 16) | (g << 8) | r; + *backbuffer++ = 0x000000FF | (r << 24) | (g << 16) | (b << 8); width--; } } + //Seems to me that this is NOT a valid mode--the JTRM seems to imply that you would need //extra hardware outside of the Jaguar console to support this! // // 16 BPP direct mode rendering // -void tom_render_16bpp_direct_scanline(int16 * backbuffer) +void tom_render_16bpp_direct_scanline(uint32 * backbuffer) { - uint16 width = tom_width; - uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; - + uint16 width = tomWidth; + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; + while (width) { uint16 color = (*current_line_buffer++) << 8; @@ -494,213 +805,299 @@ void tom_render_16bpp_direct_scanline(int16 * backbuffer) } } + // // 16 BPP RGB mode rendering // -void tom_render_16bpp_rgb_scanline(int16 * backbuffer) +void tom_render_16bpp_rgb_scanline(uint32 * backbuffer) { - uint16 width = tom_width; - uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; - - while (width) - { - uint16 color = (*current_line_buffer++) << 8; - color = (color | *current_line_buffer++) >> 1; - color = (color&0x7C00) | ((color&0x03E0) >> 5) | ((color&0x001F) << 5); - *backbuffer++ = color; - width--; - } -} +//CHANGED TO 32BPP RENDERING + // 16 BPP RGB: 0-5 green, 6-10 blue, 11-15 red -// This stuff may just go away by itself, especially if we do some -// good old OpenGL goodness... + uint16 width = tomWidth; + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; -void tom_render_16bpp_cry_rgb_mix_stretch_scanline(int16 *backbuffer) -{ - uint16 width=tom_width; - uint8 *current_line_buffer=(uint8*)&tom_ram_8[0x1800]; - - while (width) + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); // Get start position in HC ticks + startPos /= pwidth; + + if (startPos < 0) + current_line_buffer += 2 * -startPos; + else +#ifdef LEFT_BG_FIX { - uint16 color; - color=*current_line_buffer++; - color<<=8; - color|=*current_line_buffer++; - *backbuffer++=tom_cry_rgb_mix_lut[color]; - current_line_buffer+=2; - width--; - } -} + uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1]; + uint32 pixel = 0x000000FF | (r << 24) | (g << 16) | (b << 8); -void tom_render_16bpp_cry_stretch_scanline(int16 *backbuffer) -{ - uint32 chrm, chrl, y; + for(int16 i=0; i> 12; - chrl = (color & 0x0F00) >> 8; - y = (color & 0x00FF); - - uint16 red = ((((uint32)redcv[chrm][chrl])*y)>>11); - uint16 green = ((((uint32)greencv[chrm][chrl])*y)>>11); - uint16 blue = ((((uint32)bluecv[chrm][chrl])*y)>>11); - - uint16 color2; - color2=*current_line_buffer++; - color2<<=8; - color2|=*current_line_buffer++; - - chrm = (color2 & 0xF000) >> 12; - chrl = (color2 & 0x0F00) >> 8; - y = (color2 & 0x00FF); - - uint16 red2 = ((((uint32)redcv[chrm][chrl])*y)>>11); - uint16 green2 = ((((uint32)greencv[chrm][chrl])*y)>>11); - uint16 blue2 = ((((uint32)bluecv[chrm][chrl])*y)>>11); - - red=(red+red2)>>1; - green=(green+green2)>>1; - blue=(blue+blue2)>>1; - - *backbuffer++=(red<<10)|(green<<5)|blue; - width--; + width -= startPos; } -} +#else +//This should likely be 4 instead of 2 (?--not sure) + backbuffer += 2 * startPos, width -= startPos; +#endif -void tom_render_24bpp_stretch_scanline(int16 *backbuffer) -{ - uint16 width=tom_width; - uint8 *current_line_buffer=(uint8*)&tom_ram_8[0x1800]; - while (width) { - uint16 green=*current_line_buffer++; - uint16 red=*current_line_buffer++; - /*uint16 nc=*/current_line_buffer++; - uint16 blue=*current_line_buffer++; - red>>=3; - green>>=3; - blue>>=3; - *backbuffer++=(red<<10)|(green<<5)|blue; - current_line_buffer+=4; + uint32 color = (*current_line_buffer++) << 8; + color |= *current_line_buffer++; + *backbuffer++ = RGB16ToRGB32[color]; width--; } } -void tom_render_16bpp_direct_stretch_scanline(int16 *backbuffer) + +// +// Process a single scanline +// (this is bad terminology; each tick of the VC is actually a half-line) +// +void TOMExecHalfline(uint16 halfline, bool render) { - uint16 width=tom_width; - uint8 *current_line_buffer=(uint8*)&tom_ram_8[0x1800]; - - while (width) +#warning "!!! Need to handle multiple fields properly !!!" + // We ignore the problem for now + halfline &= 0x7FF; + + bool inActiveDisplayArea = true; + +//Interlacing is still not handled correctly here... !!! FIX !!! + if (halfline & 0x01) // Execute OP only on even halflines (non-interlaced only!) + return; + +//Hm, it seems that the OP needs to execute from zero, so let's try it: +// And it works! But need to do some optimizations in the OP to keep it from attempting +// to do a scanline render in the non-display area... [DONE] +//this seems to cause a regression in certain games, like rayman +//which means I have to dig thru the asic nets to see what's wrong... +/* +No, the OP doesn't start until VDB, that much is certain. The thing is, VDB is the +HALF line that the OP starts on--which means that it needs to start at VDB / 2!!! + +Hrm, doesn't seem to be enough, though it should be... still sticks for 20 frames. + + +What triggers this is writing $FFFF to VDE. This causes the OP start signal in VID to +latch on, which in effect sets VDB to zero. So that much is correct. But the thing with +Rayman is that it shouldn't cause the graphical glitches seen there, so still have to +investigate what's going on there. By all rights, it shouldn't glitch because: + +00006C00: 0000000D 82008F73 (BRANCH) YPOS=494, CC=">", link=$00006C10 +00006C08: 000003FF 00008173 (BRANCH) YPOS=46, CC=">", link=$001FF800 +00006C10: 00000000 0000000C (STOP) +001FF800: 12FC2BFF 02380000 (BITMAP) + 00008004 8180CFF1 + +Even if the OP is running all the time, the link should tell it to stop at the right +place (which it seems to do). But we still get glitchy screen. + +Seems the glitchy screen went away... Maybe the GPU alignment fixes fixed it??? +Just need to add the proper checking here then. + +Some numbers, courtesy of the Jaguar BIOS: +// NTSC: +VP, 523 // Vertical Period (1-based; in this case VP = 524) +VBE, 24 // Vertical Blank End +VDB, 38 // Vertical Display Begin +VDE, 518 // Vertical Display End +VBB, 500 // Vertical Blank Begin +VS, 517 // Vertical Sync + +// PAL Jaguar +VP, 623 // Vertical Period (1-based; in this case VP = 624) +VBE, 34 // Vertical Blank End +VDB, 38 // Vertical Display Begin +VDE, 518 // Vertical Display End +VBB, 600 // Vertical Blank Begin +VS, 618 // Vertical Sync + +Numbers for KM, NTSC: +KM: (Note that with VDE <= 507, the OP starts at VDB as expected) +TOM: Vertical Display Begin written by M68K: 41 +TOM: Vertical Display End written by M68K: 2047 +TOM: Vertical Interrupt written by M68K: 491 +*/ +#if 1 + // Initial values that "well behaved" programs use + uint16 startingHalfline = GET16(tomRam8, VDB); + uint16 endingHalfline = GET16(tomRam8, VDE); + + // Simulate the OP start bug here! + // Really, this value is somewhere around 507 for an NTSC Jaguar. But this + // should work in a majority of cases, at least until we can figure it out properly. + if (endingHalfline > GET16(tomRam8, VP)) + startingHalfline = 0; + + if (halfline >= startingHalfline && halfline < endingHalfline) +// if (halfline >= 0 && halfline < (uint16)GET16(tomRam8, VDE)) +// 16 isn't enough, and neither is 32 for raptgun. 32 fucks up Rayman +// if (halfline >= ((uint16)GET16(tomRam8, VDB) / 2) && halfline < ((uint16)GET16(tomRam8, VDE) / 2)) +// if (halfline >= ((uint16)GET16(tomRam8, VDB) - 16) && halfline < (uint16)GET16(tomRam8, VDE)) +// if (halfline >= 20 && halfline < (uint16)GET16(tomRam8, VDE)) +// if (halfline >= (uint16)GET16(tomRam8, VDB) && halfline < (uint16)GET16(tomRam8, VDE)) { - uint16 color=*current_line_buffer++; - color<<=8; - color|=*current_line_buffer++; - color>>=1; - *backbuffer++=color; - current_line_buffer+=2; - width--; + if (render) + { + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; + uint8 bgHI = tomRam8[BG], bgLO = tomRam8[BG + 1]; + + // Clear line buffer with BG + if (GET16(tomRam8, VMODE) & BGEN) // && (CRY or RGB16)... + for(uint32 i=0; i<720; i++) + *current_line_buffer++ = bgHI, *current_line_buffer++ = bgLO; + + OPProcessList(halfline, render); + } } -} + else + inActiveDisplayArea = false; +#else + inActiveDisplayArea = + (halfline >= (uint16)GET16(tomRam8, VDB) && halfline < (uint16)GET16(tomRam8, VDE) + ? true : false); -void tom_render_16bpp_rgb_stretch_scanline(int16 *backbuffer) -{ - uint16 width=tom_width; - uint8 *current_line_buffer=(uint8*)&tom_ram_8[0x1800]; - - while (width) + if (halfline < (uint16)GET16(tomRam8, VDE)) { - uint16 color1=*current_line_buffer++; - color1<<=8; - color1|=*current_line_buffer++; - color1>>=1; - uint16 color2=*current_line_buffer++; - color2<<=8; - color2|=*current_line_buffer++; - color2>>=1; - uint16 red=(((color1&0x7c00)>>10)+((color2&0x7c00)>>10))>>1; - uint16 green=(((color1&0x00003e0)>>5)+((color2&0x00003e0)>>5))>>1; - uint16 blue=(((color1&0x0000001f))+((color2&0x0000001f)))>>1; - - color1=(red<<10)|(blue<<5)|green; - *backbuffer++=color1; - width--; + if (render)//With JaguarExecuteNew() this is always true... + { + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; + uint8 bgHI = tomRam8[BG], bgLO = tomRam8[BG + 1]; + + // Clear line buffer with BG + if (GET16(tomRam8, VMODE) & BGEN) // && (CRY or RGB16)... + for(uint32 i=0; i<720; i++) + *current_line_buffer++ = bgHI, *current_line_buffer++ = bgLO; + +// OPProcessList(halfline, render); +//This seems to take care of it... + OPProcessList(halfline, inActiveDisplayArea); + } } -} +#endif + + // Try to take PAL into account... [We do now!] + + uint16 topVisible = (vjs.hardwareTypeNTSC ? TOP_VISIBLE_VC : TOP_VISIBLE_VC_PAL), + bottomVisible = (vjs.hardwareTypeNTSC ? BOTTOM_VISIBLE_VC : BOTTOM_VISIBLE_VC_PAL); + uint32 * TOMCurrentLine = &(screenBuffer[((halfline - topVisible) / 2) * screenPitch]); + // Here's our virtualized scanline code... + + if (halfline >= topVisible && halfline < bottomVisible) + { + if (inActiveDisplayArea) + { +//NOTE: The following doesn't put BORDER color on the sides... !!! FIX !!! +#warning "The following doesn't put BORDER color on the sides... !!! FIX !!!" + if (vjs.renderType == RT_NORMAL) +// scanline_render[TOMGetVideoMode()](TOMBackbuffer); + scanline_render[TOMGetVideoMode()](TOMCurrentLine); + else//TV type render + { +/* + tom_render_16bpp_cry_scanline, + tom_render_24bpp_scanline, + tom_render_16bpp_direct_scanline, + tom_render_16bpp_rgb_scanline, + tom_render_16bpp_cry_rgb_mix_scanline, + tom_render_24bpp_scanline, + tom_render_16bpp_direct_scanline, + tom_render_16bpp_rgb_scanline +#define VMODE 0x28 +#define MODE 0x0006 // Line buffer to video generator mode +#define VARMOD 0x0100 // Mixed CRY/RGB16 mode (only works in MODE 0!) +*/ + uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; + uint8 mode = ((GET16(tomRam8, VMODE) & MODE) >> 1); + bool varmod = GET16(tomRam8, VMODE) & VARMOD; +//The video texture line buffer ranges from 0 to 1279, with its left edge starting at +//LEFT_VISIBLE_HC. So, we need to start writing into the backbuffer at HDB1, using pwidth +//as our scaling factor. The way it generates its image on a real TV! + +//So, for example, if HDB1 is less than LEFT_VISIBLE_HC, then we have to figure out where +//in the VTLB that we start writing pixels from the Jaguar line buffer (VTLB start=0, +//JLB=something). +#if 0 // -// Process a single scanline +// 24 BPP mode rendering // -void tom_exec_scanline(int16 * backbuffer, int32 scanline, bool render) +void tom_render_24bpp_scanline(uint32 * backbuffer) { - if (render) - { - uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; - uint8 bgHI = tom_ram_8[BG], bgLO = tom_ram_8[BG + 1]; - - // Clear line buffer with BG - if (GET16(tom_ram_8, VMODE) & BGEN) // && (CRY or RGB16)... - for(uint32 i=0; i<720; i++) - *current_line_buffer++ = bgHI, *current_line_buffer++ = bgLO; +//CHANGED TO 32BPP RENDERING + uint16 width = tomWidth; + uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800]; + + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); // Get start position in HC ticks + startPos /= pwidth; + if (startPos < 0) + current_line_buffer += 4 * -startPos; + else +//This should likely be 4 instead of 2 (?--not sure) + backbuffer += 2 * startPos, width -= startPos; - OPProcessList(scanline, render); - scanline_render[tom_getVideoMode()](backbuffer); + while (width) + { + uint32 g = *current_line_buffer++; + uint32 r = *current_line_buffer++; + current_line_buffer++; + uint32 b = *current_line_buffer++; + *backbuffer++ = 0xFF000000 | (b << 16) | (g << 8) | r; + width--; } } +#endif -uint32 TOMGetSDLScreenPitch(void) -{ - extern SDL_Surface * surface; - - return surface->pitch; + } + } + else + { + // If outside of VDB & VDE, then display the border color + uint32 * currentLineBuffer = TOMCurrentLine; + uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1]; +//Hm. uint32 pixel = 0xFF000000 | (b << 16) | (g << 8) | r; + uint32 pixel = 0x000000FF | (r << 24) | (g << 16) | (b << 8); + + for(uint32 i=0; i> 9]; +// return width[(GET16(tomRam8, VMODE) & PWIDTH) >> 9]; // Now, we just calculate it... - uint16 hdb1 = GET16(tom_ram_8, HDB1), hde = GET16(tom_ram_8, HDE), - hbb = GET16(tom_ram_8, HBB), pwidth = ((GET16(tom_ram_8, VMODE) & PWIDTH) >> 9) + 1; +/* uint16 hdb1 = GET16(tomRam8, HDB1), hde = GET16(tomRam8, HDE), + hbb = GET16(tomRam8, HBB), pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; // return ((hbb < hde ? hbb : hde) - hdb1) / pwidth; //Temporary, for testing Doom... - return ((hbb < hde ? hbb : hde) - hdb1) / (pwidth = 8 ? 4 : pwidth); + return ((hbb < hde ? hbb : hde) - hdb1) / (pwidth == 8 ? 4 : pwidth);*/ + + // To make it easier to make a quasi-fixed display size, we restrict the viewing + // area to an arbitrary range of the Horizontal Count. + uint16 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1; + return (vjs.hardwareTypeNTSC ? RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC : RIGHT_VISIBLE_HC_PAL - LEFT_VISIBLE_HC_PAL) / pwidth; +//Temporary, for testing Doom... +// return (RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC) / (pwidth == 8 ? 4 : pwidth); +//// return (RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC) / (pwidth == 4 ? 8 : pwidth); // More speculating... // According to the JTRM, the number of potential pixels across is given by the @@ -746,22 +1151,26 @@ uint32 tom_getVideoModeWidth(void) // which to measure HBB & HDB1/2 against when rendering LBUF (i.e., if HDB1 is 20 ticks // to the right of the ALDL and PWIDTH is 4, then start writing the LBUF starting at // backbuffer + 5 pixels). + +// That's basically what we're doing now...! } + // *** SPECULATION *** // It might work better to virtualize the height settings, i.e., set the vertical // height at 240 lines and clip using the VDB and VDE/VP registers... -// Same with the width... +// Same with the width... [Width is pretty much virtualized now.] -uint32 tom_getVideoModeHeight(void) +// Now that that the width is virtualized, let's virtualize the height. :-) +uint32 TOMGetVideoModeHeight(void) { -// uint16 vmode = GET16(tom_ram_8, VMODE); - uint16 vbe = GET16(tom_ram_8, VBE); - uint16 vbb = GET16(tom_ram_8, VBB); -// uint16 vdb = GET16(tom_ram_8, VDB); -// uint16 vde = GET16(tom_ram_8, VDE); -// uint16 vp = GET16(tom_ram_8, VP); - +// uint16 vmode = GET16(tomRam8, VMODE); +// uint16 vbe = GET16(tomRam8, VBE); +// uint16 vbb = GET16(tomRam8, VBB); +// uint16 vdb = GET16(tomRam8, VDB); +// uint16 vde = GET16(tomRam8, VDE); +// uint16 vp = GET16(tomRam8, VP); + /* if (vde == 0xFFFF) vde = vbb;//*/ @@ -774,64 +1183,106 @@ uint32 tom_getVideoModeHeight(void) // return ((vde > vbb ? vbb : vde) - vdb) >> 1; //Let's try from the Vertical Blank interval... //Seems to work OK! - return (vbb - vbe) >> 1; // Again, doesn't take interlacing into account... +// return (vbb - vbe) >> 1; // Again, doesn't take interlacing into account... +// This of course doesn't take interlacing into account. But I haven't seen any +// Jaguar software that takes advantage of it either... +//Also, doesn't reflect PAL Jaguar either... !!! FIX !!! [DONE] +// return 240; // Set virtual screen height to 240 lines... + return (vjs.hardwareTypeNTSC ? 240 : 256); } + // // TOM reset code // Now PAL friendly! // -void tom_reset(void) +/* +The values in TOMReset come from the Jaguar BIOS. +These values are from BJL: + +NSTC: +CLK2 181 +HP 844 +HBB 1713 +HBE 125 +HS 1741 +HVS 651 +HEQ 784 +HDE 1696 +HDB1 166 +HDB2 166 +VP 523 +VEE 6 +VBE 24 +VDB 46 +VDE 496 +VBB 500 +VEB 511 +VS 517 + +PAL: +CLK2 226 +HP 850 +HBB 1711 +HBE 158 +HS 1749 +HVS 601 +HEQ 787 +HDE 1696 +HDB1 166 +HDB2 166 +VP 625 +VEE 6 +VBE 34 +VDB 46 +VDE 429 +VBB 600 +VEB 613 +VS 618 +*/ +void TOMReset(void) { - extern bool hardwareTypeNTSC; - - op_reset(); - blitter_reset(); -//This should be done by JERRY! pcm_reset(); - - memset(tom_ram_8, 0x00, 0x4000); + OPReset(); + BlitterReset(); + memset(tomRam8, 0x00, 0x4000); - if (hardwareTypeNTSC) + if (vjs.hardwareTypeNTSC) { - SET16(tom_ram_8, MEMCON1, 0x1861); - SET16(tom_ram_8, MEMCON2, 0x35CC); - SET16(tom_ram_8, HP, 844); // Horizontal Period (1-based; HP=845) - SET16(tom_ram_8, HBB, 1713); // Horizontal Blank Begin - SET16(tom_ram_8, HBE, 125); // Horizontal Blank End - SET16(tom_ram_8, HDE, 1665); // Horizontal Display End - SET16(tom_ram_8, HDB1, 203); // Horizontal Display Begin 1 - SET16(tom_ram_8, VP, 523); // Vertical Period (1-based; in this case VP = 524) - SET16(tom_ram_8, VBE, 24); // Vertical Blank End - SET16(tom_ram_8, VDB, 38); // Vertical Display Begin - SET16(tom_ram_8, VDE, 518); // Vertical Display End - SET16(tom_ram_8, VBB, 500); // Vertical Blank Begin - SET16(tom_ram_8, VS, 517); // Vertical Sync - SET16(tom_ram_8, VMODE, 0x06C1); + SET16(tomRam8, MEMCON1, 0x1861); + SET16(tomRam8, MEMCON2, 0x35CC); + SET16(tomRam8, HP, 844); // Horizontal Period (1-based; HP=845) + SET16(tomRam8, HBB, 1713); // Horizontal Blank Begin + SET16(tomRam8, HBE, 125); // Horizontal Blank End + SET16(tomRam8, HDE, 1665); // Horizontal Display End + SET16(tomRam8, HDB1, 203); // Horizontal Display Begin 1 + SET16(tomRam8, VP, 523); // Vertical Period (1-based; in this case VP = 524) + SET16(tomRam8, VBE, 24); // Vertical Blank End + SET16(tomRam8, VDB, 38); // Vertical Display Begin + SET16(tomRam8, VDE, 518); // Vertical Display End + SET16(tomRam8, VBB, 500); // Vertical Blank Begin + SET16(tomRam8, VS, 517); // Vertical Sync + SET16(tomRam8, VMODE, 0x06C1); } else // PAL Jaguar { - SET16(tom_ram_8, MEMCON1, 0x1861); - SET16(tom_ram_8, MEMCON2, 0x35CC); - SET16(tom_ram_8, HP, 850); // Horizontal Period - SET16(tom_ram_8, HBB, 1711); // Horizontal Blank Begin - SET16(tom_ram_8, HBE, 158); // Horizontal Blank End - SET16(tom_ram_8, HDE, 1665); // Horizontal Display End - SET16(tom_ram_8, HDB1, 203); // Horizontal Display Begin 1 - SET16(tom_ram_8, VP, 623); // Vertical Period (1-based; in this case VP = 624) - SET16(tom_ram_8, VBE, 34); // Vertical Blank End - SET16(tom_ram_8, VDB, 38); // Vertical Display Begin - SET16(tom_ram_8, VDE, 518); // Vertical Display End - SET16(tom_ram_8, VBB, 600); // Vertical Blank Begin - SET16(tom_ram_8, VS, 618); // Vertical Sync - SET16(tom_ram_8, VMODE, 0x06C1); + SET16(tomRam8, MEMCON1, 0x1861); + SET16(tomRam8, MEMCON2, 0x35CC); + SET16(tomRam8, HP, 850); // Horizontal Period + SET16(tomRam8, HBB, 1711); // Horizontal Blank Begin + SET16(tomRam8, HBE, 158); // Horizontal Blank End + SET16(tomRam8, HDE, 1665); // Horizontal Display End + SET16(tomRam8, HDB1, 203); // Horizontal Display Begin 1 + SET16(tomRam8, VP, 623); // Vertical Period (1-based; in this case VP = 624) + SET16(tomRam8, VBE, 34); // Vertical Blank End + SET16(tomRam8, VDB, 38); // Vertical Display Begin + SET16(tomRam8, VDE, 518); // Vertical Display End + SET16(tomRam8, VBB, 600); // Vertical Blank Begin + SET16(tomRam8, VS, 618); // Vertical Sync + SET16(tomRam8, VMODE, 0x06C1); } - tom_width = tom_real_internal_width = 0; - tom_height = 0; -// tom_scanline = 0; - -//This is WRONG -// hblankWidthInPixels = GET16(tom_ram_8, HDB1) >> 1; + tomWidth = 0; + tomHeight = 0; tom_jerry_int_pending = 0; tom_timer_int_pending = 0; @@ -839,12 +1290,12 @@ void tom_reset(void) tom_gpu_int_pending = 0; tom_video_int_pending = 0; - tom_timer_prescaler = 0; - tom_timer_divider = 0; - tom_timer_counter = 0; - memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render)); + tomTimerPrescaler = 0; // TOM PIT is disabled + tomTimerDivider = 0; + tomTimerCounter = 0; } + // // TOM byte access (read) // @@ -857,29 +1308,30 @@ uint8 TOMReadByte(uint32 offset, uint32 who/*=UNKNOWN*/) // offset &= 0xFF3FFF; #ifdef TOM_DEBUG - WriteLog("TOM: Reading byte at %06X\n", offset); + WriteLog("TOM: Reading byte at %06X for %s\n", offset, whoName[who]); #endif if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) return GPUReadByte(offset, who); else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000)) return GPUReadByte(offset, who); - else if ((offset >= 0xF00010) && (offset < 0xF00028)) - return OPReadByte(offset, who); +/* else if ((offset >= 0xF00010) && (offset < 0xF00028)) + return OPReadByte(offset, who);*/ else if ((offset >= 0xF02200) && (offset < 0xF022A0)) return BlitterReadByte(offset, who); else if (offset == 0xF00050) - return tom_timer_prescaler >> 8; + return tomTimerPrescaler >> 8; else if (offset == 0xF00051) - return tom_timer_prescaler & 0xFF; + return tomTimerPrescaler & 0xFF; else if (offset == 0xF00052) - return tom_timer_divider >> 8; + return tomTimerDivider >> 8; else if (offset == 0xF00053) - return tom_timer_divider & 0xFF; + return tomTimerDivider & 0xFF; - return tom_ram_8[offset & 0x3FFF]; + return tomRam8[offset & 0x3FFF]; } + // // TOM word access (read) // @@ -888,13 +1340,14 @@ uint16 TOMReadWord(uint32 offset, uint32 who/*=UNKNOWN*/) //???Is this needed??? // offset &= 0xFF3FFF; #ifdef TOM_DEBUG - WriteLog("TOM: Reading word at %06X\n", offset); + WriteLog("TOM: Reading word at %06X for %s\n", offset, whoName[who]); #endif if (offset >= 0xF02000 && offset <= 0xF020FF) - WriteLog("TOM: Read attempted from GPU register file by %s (unimplemented)!\n", whoName[who]); + WriteLog("TOM: ReadWord attempted from GPU register file by %s (unimplemented)!\n", whoName[who]); if (offset == 0xF000E0) { + // For reading, should only return the lower 5 bits... uint16 data = (tom_jerry_int_pending << 4) | (tom_timer_int_pending << 3) | (tom_object_int_pending << 2) | (tom_gpu_int_pending << 1) | (tom_video_int_pending << 0); @@ -909,34 +1362,61 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) //But it's causing Rayman to be fucked up... Why??? //Because VC is even in NI mode when calling the OP! That's why! return (tom_scanline << 1) + 1;//*/ - else if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) +/* +// F00004 R/W -----xxx xxxxxxxx HC - horizontal count +// -----x-- -------- (which half of the display) +// ------xx xxxxxxxx (10-bit counter) +*/ +// This is a kludge to get the HC working somewhat... What we really should do here +// is check what the global time is at the time of the read and calculate the correct HC... +// !!! FIX !!! + else if (offset == 0xF00004) + return rand() & 0x03FF; + else if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE + 0x20)) return GPUReadWord(offset, who); - else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000)) + else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE + 0x1000)) return GPUReadWord(offset, who); - else if ((offset >= 0xF00010) && (offset < 0xF00028)) - return OPReadWord(offset, who); +/* else if ((offset >= 0xF00010) && (offset < 0xF00028)) + return OPReadWord(offset, who);*/ else if ((offset >= 0xF02200) && (offset < 0xF022A0)) return BlitterReadWord(offset, who); else if (offset == 0xF00050) - return tom_timer_prescaler; + return tomTimerPrescaler; else if (offset == 0xF00052) - return tom_timer_divider; + return tomTimerDivider; offset &= 0x3FFF; return (TOMReadByte(offset, who) << 8) | TOMReadByte(offset + 1, who); } + +#define TOM_STRICT_MEMORY_ACCESS // // TOM byte access (write) // void TOMWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) { +#ifdef TOM_DEBUG + WriteLog("TOM: Writing byte %02X at %06X", data, offset); +#endif //???Is this needed??? // Perhaps on the writes--32-bit writes that is! And masked with FF7FFF... +#ifndef TOM_STRICT_MEMORY_ACCESS offset &= 0xFF3FFF; - +#else + // "Fast" (32-bit only) write access to the GPU +// if ((offset >= 0xF0A100) && (offset <= 0xF0BFFF)) + if ((offset >= 0xF08000) && (offset <= 0xF0BFFF)) + offset &= 0xFF7FFF; +#endif #ifdef TOM_DEBUG - WriteLog("TOM: Writing byte %02X at %06X\n", data, offset); + WriteLog(" -->[%06X] by %s\n", offset, whoName[who]); +#endif + +#ifdef TOM_STRICT_MEMORY_ACCESS + // Sanity check ("Aww, there ain't no Sanity Clause...") + if ((offset < 0xF00000) || (offset > 0xF03FFF)) + return; #endif if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) @@ -949,11 +1429,11 @@ void TOMWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) GPUWriteByte(offset, data, who); return; } - else if ((offset >= 0xF00010) && (offset < 0xF00028)) +/* else if ((offset >= 0xF00010) && (offset < 0xF00028)) { OPWriteByte(offset, data, who); return; - } + }*/ else if ((offset >= 0xF02200) && (offset < 0xF022A0)) { BlitterWriteByte(offset, data, who); @@ -961,55 +1441,72 @@ void TOMWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) } else if (offset == 0xF00050) { - tom_timer_prescaler = (tom_timer_prescaler & 0x00FF) | (data << 8); - tom_reset_timer(); + tomTimerPrescaler = (tomTimerPrescaler & 0x00FF) | (data << 8); + TOMResetPIT(); return; } else if (offset == 0xF00051) { - tom_timer_prescaler = (tom_timer_prescaler & 0xFF00) | data; - tom_reset_timer(); + tomTimerPrescaler = (tomTimerPrescaler & 0xFF00) | data; + TOMResetPIT(); return; } else if (offset == 0xF00052) { - tom_timer_divider = (tom_timer_divider & 0x00FF) | (data << 8); - tom_reset_timer(); + tomTimerDivider = (tomTimerDivider & 0x00FF) | (data << 8); + TOMResetPIT(); return; } else if (offset == 0xF00053) { - tom_timer_divider = (tom_timer_divider & 0xFF00) | data; - tom_reset_timer(); + tomTimerDivider = (tomTimerDivider & 0xFF00) | data; + TOMResetPIT(); return; } else if (offset >= 0xF00400 && offset <= 0xF007FF) // CLUT (A & B) { // Writing to one CLUT writes to the other offset &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF) - tom_ram_8[offset] = data, tom_ram_8[offset + 0x200] = data; + tomRam8[offset] = data, tomRam8[offset + 0x200] = data; } - tom_ram_8[offset & 0x3FFF] = data; + tomRam8[offset & 0x3FFF] = data; } + // // TOM word access (write) // void TOMWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/) { -//???Is this needed??? +#ifdef TOM_DEBUG + WriteLog("TOM: Writing byte %04X at %06X", data, offset); +#endif +//???Is this needed??? Yes, but we need to be more vigilant than this. +#ifndef TOM_STRICT_MEMORY_ACCESS offset &= 0xFF3FFF; - +#else + // "Fast" (32-bit only) write access to the GPU +// if ((offset >= 0xF0A100) && (offset <= 0xF0BFFF)) + if ((offset >= 0xF08000) && (offset <= 0xF0BFFF)) + offset &= 0xFF7FFF; +#endif #ifdef TOM_DEBUG - WriteLog("TOM: Writing word %04X at %06X\n", data, offset); + WriteLog(" -->[%06X] by %s\n", offset, whoName[who]); +#endif + +#ifdef TOM_STRICT_MEMORY_ACCESS + // Sanity check + if ((offset < 0xF00000) || (offset > 0xF03FFF)) + return; #endif -if (offset == 0xF00000 + MEMCON1) - WriteLog("TOM: Memory Configuration 1 written by %s: %04X\n", whoName[who], data); -if (offset == 0xF00000 + MEMCON2) - WriteLog("TOM: Memory Configuration 2 written by %s: %04X\n", whoName[who], data); + +//if (offset == 0xF00000 + MEMCON1) +// WriteLog("TOM: Memory Configuration 1 written by %s: %04X\n", whoName[who], data); +//if (offset == 0xF00000 + MEMCON2) +// WriteLog("TOM: Memory Configuration 2 written by %s: %04X\n", whoName[who], data); if (offset >= 0xF02000 && offset <= 0xF020FF) - WriteLog("TOM: Write attempted to GPU register file by %s (unimplemented)!\n", whoName[who]); + WriteLog("TOM: WriteWord attempted to GPU register file by %s (unimplemented)!\n", whoName[who]); if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) { @@ -1027,21 +1524,21 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) TOMWriteByte(offset, data >> 8); TOMWriteByte(offset+1, data & 0xFF); }*/ - else if ((offset >= 0xF00010) && (offset < 0xF00028)) +/* else if ((offset >= 0xF00010) && (offset < 0xF00028)) { OPWriteWord(offset, data, who); return; - } + }*/ else if (offset == 0xF00050) { - tom_timer_prescaler = data; - tom_reset_timer(); + tomTimerPrescaler = data; + TOMResetPIT(); return; } else if (offset == 0xF00052) { - tom_timer_divider = data; - tom_reset_timer(); + tomTimerDivider = data; + TOMResetPIT(); return; } else if (offset == 0xF000E0) @@ -1057,6 +1554,8 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) tom_timer_int_pending = 0; if (data & 0x1000) tom_jerry_int_pending = 0; + +// return; } else if ((offset >= 0xF02200) && (offset <= 0xF0229F)) { @@ -1068,11 +1567,15 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) // Writing to one CLUT writes to the other offset &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF) // Watch out for unaligned writes here! (Not fixed yet) - SET16(tom_ram_8, offset, data), SET16(tom_ram_8, offset + 0x200, data); +#warning "!!! Watch out for unaligned writes here !!! FIX !!!" + SET16(tomRam8, offset, data); + SET16(tomRam8, offset + 0x200, data); } offset &= 0x3FFF; if (offset == 0x28) // VMODE (Why? Why not OBF?) +//Actually, we should check to see if the Enable bit of VMODE is set before doing this... !!! FIX !!! +#warning "Actually, we should check to see if the Enable bit of VMODE is set before doing this... !!! FIX !!!" objectp_running = 1; if (offset >= 0x30 && offset <= 0x4E) @@ -1080,135 +1583,172 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) if (offset == 0x2E || offset == 0x36 || offset == 0x54) data &= 0x03FF; // These are all 10-bit registers - TOMWriteByte(offset, data >> 8, who); - TOMWriteByte(offset+1, data & 0xFF, who); - -if (offset == VDB) - WriteLog("TOM: Vertical Display Begin written by %s: %u\n", whoName[who], data); -if (offset == VDE) - WriteLog("TOM: Vertical Display End written by %s: %u\n", whoName[who], data); -if (offset == VP) - WriteLog("TOM: Vertical Period written by %s: %u (%sinterlaced)\n", whoName[who], data, (data & 0x01 ? "non-" : "")); +// Fix a lockup bug... :-P + TOMWriteByte(0xF00000 | offset, data >> 8, who); + TOMWriteByte(0xF00000 | (offset+1), data & 0xFF, who); + +if (offset == MEMCON1) + WriteLog("TOM: Memory Config 1 written by %s: $%04X\n", whoName[who], data); +if (offset == MEMCON2) + WriteLog("TOM: Memory Config 2 written by %s: $%04X\n", whoName[who], data); +//if (offset == OLP) +// WriteLog("TOM: Object List Pointer written by %s: $%04X\n", whoName[who], data); +//if (offset == OLP + 2) +// WriteLog("TOM: Object List Pointer +2 written by %s: $%04X\n", whoName[who], data); +//if (offset == OBF) +// WriteLog("TOM: Object Processor Flag written by %s: %u\n", whoName[who], data); +if (offset == VMODE) + WriteLog("TOM: Video Mode written by %s: %04X. PWIDTH = %u, MODE = %s, flags:%s%s (VC = %u)\n", whoName[who], data, ((data >> 9) & 0x07) + 1, videoMode_to_str[(data & MODE) >> 1], (data & BGEN ? " BGEN" : ""), (data & VARMOD ? " VARMOD" : ""), GET16(tomRam8, VC)); +if (offset == BORD1) + WriteLog("TOM: Border 1 written by %s: $%04X\n", whoName[who], data); +if (offset == BORD2) + WriteLog("TOM: Border 2 written by %s: $%04X\n", whoName[who], data); +if (offset == HP) + WriteLog("TOM: Horizontal Period written by %s: %u (+1*2 = %u)\n", whoName[who], data, (data + 1) * 2); +if (offset == HBB) + WriteLog("TOM: Horizontal Blank Begin written by %s: %u\n", whoName[who], data); +if (offset == HBE) + WriteLog("TOM: Horizontal Blank End written by %s: %u\n", whoName[who], data); +if (offset == HS) + WriteLog("TOM: Horizontal Sync written by %s: %u\n", whoName[who], data); +if (offset == HVS) + WriteLog("TOM: Horizontal Vertical Sync written by %s: %u\n", whoName[who], data); if (offset == HDB1) WriteLog("TOM: Horizontal Display Begin 1 written by %s: %u\n", whoName[who], data); +if (offset == HDB2) + WriteLog("TOM: Horizontal Display Begin 2 written by %s: %u\n", whoName[who], data); if (offset == HDE) WriteLog("TOM: Horizontal Display End written by %s: %u\n", whoName[who], data); -if (offset == HP) - WriteLog("TOM: Horizontal Period written by %s: %u (+1*2 = %u)\n", whoName[who], data, (data + 1) * 2); +if (offset == VP) + WriteLog("TOM: Vertical Period written by %s: %u (%sinterlaced)\n", whoName[who], data, (data & 0x01 ? "non-" : "")); if (offset == VBB) WriteLog("TOM: Vertical Blank Begin written by %s: %u\n", whoName[who], data); if (offset == VBE) WriteLog("TOM: Vertical Blank End written by %s: %u\n", whoName[who], data); if (offset == VS) WriteLog("TOM: Vertical Sync written by %s: %u\n", whoName[who], data); +if (offset == VDB) + WriteLog("TOM: Vertical Display Begin written by %s: %u\n", whoName[who], data); +if (offset == VDE) + WriteLog("TOM: Vertical Display End written by %s: %u\n", whoName[who], data); +if (offset == VEB) + WriteLog("TOM: Vertical Equalization Begin written by %s: %u\n", whoName[who], data); +if (offset == VEE) + WriteLog("TOM: Vertical Equalization End written by %s: %u\n", whoName[who], data); if (offset == VI) WriteLog("TOM: Vertical Interrupt written by %s: %u\n", whoName[who], data); -if (offset == HBB) - WriteLog("TOM: Horizontal Blank Begin written by %s: %u\n", whoName[who], data); -if (offset == HBE) - WriteLog("TOM: Horizontal Blank End written by %s: %u\n", whoName[who], data); -if (offset == VMODE) - WriteLog("TOM: Video Mode written by %s: %04X. PWIDTH = %u, MODE = %s, flags:%s%s (VC = %u)\n", whoName[who], data, ((data >> 9) & 0x07) + 1, videoMode_to_str[(data & MODE) >> 1], (data & BGEN ? " BGEN" : ""), (data & VARMOD ? " VARMOD" : ""), GET16(tom_ram_8, VC)); -/*#define MODE 0x0006 // Line buffer to video generator mode -#define BGEN 0x0080 // Background enable (CRY & RGB16 only) -#define VARMOD 0x0100 // Mixed CRY/RGB16 mode -#define PWIDTH 0x0E00 // Pixel width in video clock cycles (value written + 1)*/ +if (offset == PIT0) + WriteLog("TOM: PIT0 written by %s: %u\n", whoName[who], data); +if (offset == PIT1) + WriteLog("TOM: PIT1 written by %s: %u\n", whoName[who], data); +if (offset == HEQ) + WriteLog("TOM: Horizontal Equalization End written by %s: %u\n", whoName[who], data); +//if (offset == BG) +// WriteLog("TOM: Background written by %s: %u\n", whoName[who], data); +//if (offset == INT1) +// WriteLog("TOM: CPU Interrupt Control written by %s: $%04X (%s%s%s%s%s)\n", whoName[who], data, (data & 0x01 ? "Video" : ""), (data & 0x02 ? " GPU" : ""), (data & 0x04 ? " OP" : ""), (data & 0x08 ? " TOMPIT" : ""), (data & 0x10 ? " Jerry" : "")); // detect screen resolution changes //This may go away in the future, if we do the virtualized screen thing... +//This may go away soon! +// TOM Shouldn't be mucking around with this, it's up to the host system to properly +// handle this kind of crap. +// NOTE: This is needed somehow, need to get rid of the dependency on this crap. +#warning "!!! Need to get rid of this dependency !!!" +#if 1 if ((offset >= 0x28) && (offset <= 0x4F)) { - uint32 width = tom_getVideoModeWidth(), height = tom_getVideoModeHeight(); - tom_real_internal_width = width; + uint32 width = TOMGetVideoModeWidth(), height = TOMGetVideoModeHeight(); -//This looks like an attempt to render non-square pixels (though wrong...) -/* if (width == 640) + if ((width != tomWidth) || (height != tomHeight)) { - memcpy(scanline_render, scanline_render_stretch, sizeof(scanline_render)); - width = 320; - } - else - memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render));//*/ - - if ((width != tom_width) || (height != tom_height)) - { - extern SDL_Surface * surface, * mainSurface; - extern Uint32 mainSurfaceFlags; - static char window_title[256]; - - tom_width = width, tom_height = height; - SDL_FreeSurface(surface); - surface = SDL_CreateRGBSurface(SDL_SWSURFACE, tom_width, tom_height, - 16, 0x7C00, 0x03E0, 0x001F, 0); - if (surface == NULL) - { - WriteLog("TOM: Could not create primary SDL surface: %s", SDL_GetError()); - exit(1); - } - - sprintf(window_title, "Virtual Jaguar (%i x %i)", (int)tom_width, (int)tom_height); -//???Should we do this??? No! -// SDL_FreeSurface(mainSurface); - mainSurface = SDL_SetVideoMode(tom_width, tom_height, 16, mainSurfaceFlags); - - if (mainSurface == NULL) - { - WriteLog("Joystick: SDL is unable to set the video mode: %s\n", SDL_GetError()); - exit(1); - } + tomWidth = width, tomHeight = height; - SDL_WM_SetCaption(window_title, window_title); +#warning "!!! TOM: ResizeScreen commented out !!!" +// No need to resize anything, since we're prepared for this... +// if (vjs.renderType == RT_NORMAL) +// ResizeScreen(tomWidth, tomHeight); } } +#endif } -int tom_irq_enabled(int irq) + +int TOMIRQEnabled(int irq) { // This is the correct byte in big endian... D'oh! // return jaguar_byte_read(0xF000E1) & (1 << irq); - return tom_ram_8[INT1 + 1/*0xE1*/] & (1 << irq); + return tomRam8[INT1 + 1/*0xE1*/] & (1 << irq); } -//unused -/*void tom_set_irq_latch(int irq, int enabled) -{ - tom_ram_8[0xE0] = (tom_ram_8[0xE0] & (~(1< 0) + if (tomTimerPrescaler) { - tom_timer_counter -= cycles; + tomTimerCounter -= cycles; - if (tom_timer_counter <= 0) + if (tomTimerCounter <= 0) { - tom_set_pending_timer_int(); - GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); - if (tom_irq_enabled(IRQ_TIMER) && jaguar_interrupt_handler_is_valid(64)) - m68k_set_irq(7); // Cause a 68000 NMI... + TOMSetPendingTimerInt(); + GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // GPUSetIRQLine does the 'IRQ enabled' checking + + if (TOMIRQEnabled(IRQ_TIMER)) + m68k_set_irq(2); // Cause a 68000 IPL 2... - tom_reset_timer(); + TOMResetPIT(); } } } + + +void TOMPITCallback(void) +{ +// INT1_RREG |= 0x08; // Set TOM PIT interrupt pending + TOMSetPendingTimerInt(); + GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // It does the 'IRQ enabled' checking + +// if (INT1_WREG & 0x08) + if (TOMIRQEnabled(IRQ_TIMER)) + m68k_set_irq(2); // Generate a 68K IPL 2... + + TOMResetPIT(); +} +