X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ftom.cpp;h=845f1551f37f1b88548a3e796ccc39a977300ee6;hb=83fce768d2c1e0e16691c092ea02d64e2b280fad;hp=f9054f6769067aa6fcd9796409d640fdcb570a8d;hpb=fcdc03c5e732a7e4461c817c3c315a11ed87d3b9;p=virtualjaguar diff --git a/src/tom.cpp b/src/tom.cpp index f9054f6..845f155 100644 --- a/src/tom.cpp +++ b/src/tom.cpp @@ -3,10 +3,10 @@ // // 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 L. Hammons +// JLH = James Hammons // // Who When What // --- ---------- ------------------------------------------------------------- @@ -263,9 +263,9 @@ #include "gpu.h" #include "jaguar.h" #include "log.h" -#include "m68k.h" +#include "m68000/m68kinterface.h" //#include "memory.h" -#include "objectp.h" +#include "op.h" #include "settings.h" #define NEW_TIMER_SYSTEM @@ -276,6 +276,8 @@ #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) @@ -284,28 +286,49 @@ #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 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 !!! +//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//*/ -#define LEFT_VISIBLE_HC 208 -#define RIGHT_VISIBLE_HC 1488 +// 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 @@ -314,8 +337,11 @@ //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 -#define RIGHT_VISIBLE_HC_PAL 1488 +//#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 @@ -330,7 +356,11 @@ 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; -uint32 * TOMBackbuffer; + +// 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", @@ -533,6 +563,7 @@ uint32 RGB16ToRGB32[0x10000]; uint32 CRY16ToRGB32[0x10000]; uint32 MIX16ToRGB32[0x10000]; + #warning "This is not endian-safe. !!! FIX !!!" void TOMFillLookupTables(void) { @@ -564,42 +595,50 @@ void TOMFillLookupTables(void) } } + void TOMSetPendingJERRYInt(void) { tom_jerry_int_pending = 1; } + void TOMSetPendingTimerInt(void) { tom_timer_int_pending = 1; } + void TOMSetPendingObjectInt(void) { tom_object_int_pending = 1; } + void TOMSetPendingGPUInt(void) { tom_gpu_int_pending = 1; } + void TOMSetPendingVideoInt(void) { tom_video_int_pending = 1; } + uint8 * TOMGetRamPointer(void) { return tomRam8; } + uint8 TOMGetVideoMode(void) { uint16 vmode = GET16(tomRam8, VMODE); return ((vmode & VARMOD) >> 6) | ((vmode & MODE) >> 1); } + //Used in only one place (and for debug purposes): OBJECTP.CPP #warning "Used in only one place (and for debug purposes): OBJECTP.CPP !!! FIX !!!" uint16 TOMGetVDB(void) @@ -607,6 +646,8 @@ uint16 TOMGetVDB(void) return GET16(tomRam8, VDB); } + +#define LEFT_BG_FIX // // 16 BPP CRY/RGB mixed mode rendering // @@ -621,15 +662,32 @@ void tom_render_16bpp_cry_rgb_mix_scanline(uint32 * backbuffer) //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... +//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= (uint16)GET16(tomRam8, VDB) && scanline < (uint16)GET16(tomRam8, VDE)) +//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)) { if (render) { @@ -786,17 +948,17 @@ void TOMExecScanline(uint16 scanline, bool render) for(uint32 i=0; i<720; i++) *current_line_buffer++ = bgHI, *current_line_buffer++ = bgLO; - OPProcessList(scanline, render); + OPProcessList(halfline, render); } } else inActiveDisplayArea = false; #else inActiveDisplayArea = - (scanline >= (uint16)GET16(tomRam8, VDB) && scanline < (uint16)GET16(tomRam8, VDE) + (halfline >= (uint16)GET16(tomRam8, VDB) && halfline < (uint16)GET16(tomRam8, VDE) ? true : false); - if (scanline < (uint16)GET16(tomRam8, VDE)) + if (halfline < (uint16)GET16(tomRam8, VDE)) { if (render)//With JaguarExecuteNew() this is always true... { @@ -808,28 +970,30 @@ void TOMExecScanline(uint16 scanline, bool render) for(uint32 i=0; i<720; i++) *current_line_buffer++ = bgHI, *current_line_buffer++ = bgLO; -// OPProcessList(scanline, render); +// OPProcessList(halfline, render); //This seems to take care of it... - OPProcessList(scanline, inActiveDisplayArea); + OPProcessList(halfline, inActiveDisplayArea); } } #endif - // Try to take PAL into account... + // 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 (scanline >= topVisible && scanline < bottomVisible) + 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()](TOMBackbuffer); + scanline_render[TOMGetVideoMode()](TOMCurrentLine); else//TV type render { /* @@ -893,7 +1057,7 @@ void tom_render_24bpp_scanline(uint32 * backbuffer) else { // If outside of VDB & VDE, then display the border color - uint32 * currentLineBuffer = TOMBackbuffer; + 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); @@ -901,13 +1065,10 @@ void tom_render_24bpp_scanline(uint32 * backbuffer) for(uint32 i=0; i= 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); @@ -1177,6 +1389,7 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) return (TOMReadByte(offset, who) << 8) | TOMReadByte(offset + 1, who); } + #define TOM_STRICT_MEMORY_ACCESS // // TOM byte access (write) @@ -1260,6 +1473,7 @@ void TOMWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) tomRam8[offset & 0x3FFF] = data; } + // // TOM word access (write) // @@ -1287,12 +1501,12 @@ void TOMWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/) 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)) { @@ -1340,6 +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)) { @@ -1351,6 +1567,7 @@ 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) +#warning "!!! Watch out for unaligned writes here !!! FIX !!!" SET16(tomRam8, offset, data); SET16(tomRam8, offset + 0x200, data); } @@ -1370,32 +1587,66 @@ if (offset >= 0xF02000 && offset <= 0xF020FF) TOMWriteByte(0xF00000 | offset, data >> 8, who); TOMWriteByte(0xF00000 | (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-" : "")); +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(tomRam8, VC)); +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... @@ -1422,6 +1673,7 @@ if (offset == VMODE) #endif } + int TOMIRQEnabled(int irq) { // This is the correct byte in big endian... D'oh! @@ -1429,6 +1681,7 @@ int TOMIRQEnabled(int irq) return tomRam8[INT1 + 1/*0xE1*/] & (1 << irq); } + // NEW: // TOM Programmable Interrupt Timer handler // NOTE: TOM's PIT is only enabled if the prescaler is != 0 @@ -1436,6 +1689,7 @@ int TOMIRQEnabled(int irq) void TOMPITCallback(void); + void TOMResetPIT(void) { #ifndef NEW_TIMER_SYSTEM @@ -1458,6 +1712,7 @@ void TOMResetPIT(void) #endif } + // // TOM Programmable Interrupt Timer handler // NOTE: TOM's PIT is only enabled if the prescaler is != 0 @@ -1476,13 +1731,14 @@ void TOMExecPIT(uint32 cycles) GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // GPUSetIRQLine does the 'IRQ enabled' checking if (TOMIRQEnabled(IRQ_TIMER)) - m68k_set_irq(7); // Cause a 68000 NMI... + m68k_set_irq(2); // Cause a 68000 IPL 2... TOMResetPIT(); } } } + void TOMPITCallback(void) { // INT1_RREG |= 0x08; // Set TOM PIT interrupt pending @@ -1491,7 +1747,8 @@ void TOMPITCallback(void) // if (INT1_WREG & 0x08) if (TOMIRQEnabled(IRQ_TIMER)) - m68k_set_irq(7); // Generate 68K NMI + m68k_set_irq(2); // Generate a 68K IPL 2... TOMResetPIT(); } +