X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ftom.cpp;h=c01ddecc032201b9b3d35ce0bc46c295269a1dce;hb=a71ef511af0a3680237ad91e7f80b2f77a10dcc4;hp=3cfd290b71b0a6b7f697dbc5ac03b474b7ebbae8;hpb=fa566a2c8ec532eb5325b4d5a663fb2a7d72adc6;p=virtualjaguar diff --git a/src/tom.cpp b/src/tom.cpp index 3cfd290..c01ddec 100644 --- a/src/tom.cpp +++ b/src/tom.cpp @@ -244,23 +244,27 @@ // F02298 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_Z0 - Z0 // ------------------------------------------------------------ -#include -#include "SDLptc.h" +//#include #include "tom.h" +#include "video.h" #include "gpu.h" #include "objectp.h" #include "cry2rgb.h" +#include "settings.h" // TOM registers (offset from $F00000) #define MEMCON1 0x00 #define MEMCON2 0x02 #define HC 0x04 +#define VC 0x06 #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 -#define PWIDTH 0x0E00 // Pixel width in video clock cycles +#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 HBE 0x32 @@ -273,15 +277,34 @@ #define VS 0x44 #define VDB 0x46 #define VDE 0x48 +#define VI 0x4E #define BG 0x58 +#define INT1 0xE0 + +//NOTE: These arbitrary cutoffs are NOT taken into account for PAL jaguar screens. !!! FIX !!! + +// Arbitrary video cutoff values (i.e., first/last visible spots on a TV, in HC ticks) +/*#define LEFT_VISIBLE_HC 208 +#define RIGHT_VISIBLE_HC 1528//*/ +#define LEFT_VISIBLE_HC 208 +#define RIGHT_VISIBLE_HC 1488 +//#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 +#define RIGHT_VISIBLE_HC_PAL 1488 +#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...) +//(It's easier to do it here, though...) //#define TOM_DEBUG -extern uint32 jaguar_mainRom_crc32; -extern Console console; -extern Surface * surface; extern uint8 objectp_running; static uint8 * tom_ram_8; @@ -289,18 +312,16 @@ 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; -uint16 tom_puck_int_pending; -uint16 tom_timer_int_pending; -uint16 tom_object_int_pending; -uint16 tom_gpu_int_pending; -uint16 tom_video_int_pending; +//uint32 tom_scanline; +//uint32 hblankWidthInPixels = 0; +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; +int16 * TOMBackbuffer; static 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" }; + { "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 *); @@ -327,7 +348,7 @@ render_xxx_scanline_fn * scanline_render_normal[]= tom_render_16bpp_cry_rgb_mix_scanline, tom_render_24bpp_scanline, tom_render_16bpp_direct_scanline, - tom_render_16bpp_rgb_scanline, + tom_render_16bpp_rgb_scanline }; render_xxx_scanline_fn * scanline_render_stretch[]= @@ -345,10 +366,179 @@ render_xxx_scanline_fn * scanline_render_stretch[]= render_xxx_scanline_fn * scanline_render[8]; +// 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 +*/ + + void tom_calc_cry_rgb_mix_lut(void) { - memory_malloc_secure((void **)&tom_cry_rgb_mix_lut, 2 * 0x10000, "CRY/RGB mixed mode LUT"); - for (uint32 i=0; i<0x10000; i++) { uint16 color = i; @@ -368,13 +558,14 @@ void tom_calc_cry_rgb_mix_lut(void) blue = (((uint32)bluecv[chrm][chrl]) * y) >> 11; color = (red << 10) | (green << 5) | blue; } + tom_cry_rgb_mix_lut[i] = color; } } -void tom_set_pending_puck_int(void) +void tom_set_pending_jerry_int(void) { - tom_puck_int_pending = 1; + tom_jerry_int_pending = 1; } void tom_set_pending_timer_int(void) @@ -408,19 +599,12 @@ uint8 tom_getVideoMode(void) return ((vmode & VARMOD) >> 6) | ((vmode & MODE) >> 1); } -uint16 tom_get_scanline(void) -{ - return tom_scanline; -} - -/*uint16 tom_get_hdb(void) -{ - return GET16(tom_ram_8, HDB); -}*/ - +//Used in only one place (and for debug purposes): OBJECTP.CPP uint16 tom_get_vdb(void) { - return GET16(tom_ram_8, VBE); +// This in NOT VDB!!! +// return GET16(tom_ram_8, VBE); + return GET16(tom_ram_8, VDB); } // @@ -431,6 +615,20 @@ void tom_render_16bpp_cry_rgb_mix_scanline(int16 * backbuffer) uint16 width = tom_width; uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tom_ram_8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + // Get start position in HC ticks + int16 startPos = GET16(tom_ram_8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); + startPos /= pwidth; + if (startPos < 0) + 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... + backbuffer += 2 * startPos, width -= startPos; + while (width) { uint16 color = (*current_line_buffer++) << 8; @@ -448,6 +646,16 @@ void tom_render_16bpp_cry_scanline(int16 * backbuffer) uint16 width = tom_width; uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tom_ram_8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tom_ram_8, 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 + backbuffer += 2 * startPos, width -= startPos; + while (width) { uint16 color = (*current_line_buffer++) << 8; @@ -474,8 +682,20 @@ void tom_render_24bpp_scanline(int16 * backbuffer) uint16 width = tom_width; uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tom_ram_8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tom_ram_8, 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 + backbuffer += 2 * startPos, width -= startPos; + while (width) { + // This is NOT a good 8 -> 5 bit RGB conversion! (It saturates values below 8 + // to zero and throws away almost *half* the color resolution!) uint16 green = (*current_line_buffer++) >> 3; uint16 red = (*current_line_buffer++) >> 3; current_line_buffer++; @@ -485,6 +705,8 @@ void tom_render_24bpp_scanline(int16 * backbuffer) } } +//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 // @@ -510,6 +732,16 @@ void tom_render_16bpp_rgb_scanline(int16 * backbuffer) uint16 width = tom_width; uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; + //New stuff--restrict our drawing... + uint8 pwidth = ((GET16(tom_ram_8, VMODE) & PWIDTH) >> 9) + 1; + //NOTE: May have to check HDB2 as well! + int16 startPos = GET16(tom_ram_8, 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 + backbuffer += 2 * startPos, width -= startPos; + while (width) { uint16 color = (*current_line_buffer++) << 8; @@ -646,30 +878,60 @@ void tom_render_16bpp_rgb_stretch_scanline(int16 *backbuffer) } } +void TOMResetBackbuffer(int16 * backbuffer) +{ + TOMBackbuffer = backbuffer; +} + // // Process a single scanline // -void tom_exec_scanline(int16 * backbuffer, int32 scanline, bool render) +void TOMExecScanline(uint16 scanline, bool render) { - tom_scanline = scanline; + bool inActiveDisplayArea = true; - // Increment the horizontal count (why?) - SET16(tom_ram_8, HC, GET16(tom_ram_8, HC) + 1); +//Interlacing is still not handled correctly here... !!! FIX !!! + if (scanline & 0x01) // Execute OP only on even lines (non-interlaced only!) + return; - if (render) + if (scanline >= (uint16)GET16(tom_ram_8, VDB) && scanline < (uint16)GET16(tom_ram_8, VDE)) { - uint8 * current_line_buffer = (uint8 *)&tom_ram_8[0x1800]; - uint8 bgHI = tom_ram_8[BG], bgLO = tom_ram_8[BG+1]; + 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= topVisible && scanline < bottomVisible) + { + if (inActiveDisplayArea) + scanline_render[tom_getVideoMode()](TOMBackbuffer); + else + { + // If outside of VDB & VDE, then display the border color + int16 * currentLineBuffer = TOMBackbuffer; + uint8 g = tom_ram_8[BORD1], r = tom_ram_8[BORD1 + 1], b = tom_ram_8[BORD2 + 1]; + uint16 pixel = ((r & 0xF8) << 7) | ((g & 0xF8) << 2) | (b >> 3); + + for(uint32 i=0; i> 9; - - uint32 width = 640; - switch (clock_cycles_per_pixel) - { - case 0: width = 640; break; - case 1: width = 640; break; - case 2: width = 448; break; - case 3: width = 320; break; - case 4: width = 256; break; - case 5: width = 256; break; - case 6: width = 256; break; - case 7: width = 320; break; -// default: WriteLog("%i \n",clock_cycles_per_pixel); - } - -/* if (jaguar_mainRom_crc32 == 0x3c7bfda8) // Kludge for what??? - { - if (width == 320) - width += 80; - if (width == 448) - width -= 16; - }//*/ - - if (hdb1 == 123) - hblankWidthInPixels = 16; - else - hblankWidthInPixels = 0; - -// WriteLog("hdb1=%i hbe=%i\n",hdb1,hbe); - return width; + //These widths are pretty bogus. Should use HDB1/2 & HDE/HBB & PWIDTH to calc the width... +// uint32 width[8] = { 1330, 665, 443, 332, 266, 222, 190, 166 }; +//Temporary, for testing Doom... +// uint32 width[8] = { 1330, 665, 443, 332, 266, 222, 190, 332 }; + + // Note that the following PWIDTH values have the following pixel aspect ratios: + // PWIDTH = 1 -> 0.25:1 (1:4) pixels (X:Y ratio) + // PWIDTH = 2 -> 0.50:1 (1:2) pixels + // PWIDTH = 3 -> 0.75:1 (3:4) pixels + // PWIDTH = 4 -> 1.00:1 (1:1) pixels + // PWIDTH = 5 -> 1.25:1 (5:4) pixels + // PWIDTH = 6 -> 1.50:1 (3:2) pixels + // PWIDTH = 7 -> 1.75:1 (7:4) pixels + // PWIDTH = 8 -> 2.00:1 (2:1) pixels + + // Also note that the JTRM says that PWIDTH of 4 gives pixels that are "about" square-- + // this implies that the other modes have pixels that are *not* square! + // Also, I seriously doubt that you will see any games that use PWIDTH = 1! + + // NOTE: Even though the PWIDTH value is + 1, here we're using a zero-based index and + // so we don't bother to add one... +// return width[(GET16(tom_ram_8, 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; +// return ((hbb < hde ? hbb : hde) - hdb1) / pwidth; +//Temporary, for testing Doom... + 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(tom_ram_8, 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 +// Horizontal Period (HP - in NTSC this is 845). The Horizontal Count counts from +// zero to this value twice per scanline (the high bit is set on the second count). +// HBE and HBB define the absolute "black" limits of the screen, while HDB1/2 and +// HDE determine the extent of the OP "on" time. I.e., when the OP is turned on by +// HDB1, it starts fetching the line from position 0 in LBUF. + +// The trick, it would seem, is to figure out how long the typical visible scanline +// of a TV is in HP ticks and limit the visible area to that (divided by PWIDTH, of +// course). Using that length, we can establish an "absolute left display limit" with +// 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.] +// Now that that the width is virtualized, let's virtualize the height. :-) uint32 tom_getVideoModeHeight(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 vdb = GET16(tom_ram_8, VDB); +// uint16 vde = GET16(tom_ram_8, VDE); +// uint16 vp = GET16(tom_ram_8, VP); /* if (vde == 0xFFFF) vde = vbb;//*/ @@ -773,79 +1054,103 @@ uint32 tom_getVideoModeHeight(void) // VC counts from 0 to VP. VDB starts the OP. Either when // VDE is reached or VP, the OP is stopped. Let's try it... // Also note that we're conveniently ignoring interlaced display modes...! - return ((vde > vp ? vp : vde) - vdb) >> 1; +// return ((vde > vp ? vp : vde) - vdb) >> 1; +// 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... +// 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 -// NOTE: Should set up PAL values here when in PAL mode (use BIOS to find default values) -// for when user starts with -nobios -pal flags... +// Now PAL friendly! // void tom_reset(void) { op_reset(); blitter_reset(); - pcm_reset(); +//This should be done by JERRY! pcm_reset(); memset(tom_ram_8, 0x00, 0x4000); - SET16(tom_ram_8, MEMCON1, 0x1861); - SET16(tom_ram_8, MEMCON2, 0x0000); - SET16(tom_ram_8, VMODE, 0x06C1); - SET16(tom_ram_8, VP, 523); - SET16(tom_ram_8, HP, 844); - SET16(tom_ram_8, VS, 523 - 6); - SET16(tom_ram_8, VBB, 434); - SET16(tom_ram_8, VBE, 24); - SET16(tom_ram_8, HBB, 689 + 0x400); - SET16(tom_ram_8, HBE, 125); - - SET16(tom_ram_8, VDE, 2047);//65535); - SET16(tom_ram_8, VDB, 28); - SET16(tom_ram_8, HDB1, 166); - SET16(tom_ram_8, HDE, 2047);//65535); + + 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); + } + 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); + } tom_width = tom_real_internal_width = 0; tom_height = 0; - tom_scanline = 0; - - hblankWidthInPixels = GET16(tom_ram_8, HDB1) >> 1; - tom_puck_int_pending = 0; + tom_jerry_int_pending = 0; tom_timer_int_pending = 0; tom_object_int_pending = 0; tom_gpu_int_pending = 0; tom_video_int_pending = 0; - tom_timer_prescaler = 0; + tom_timer_prescaler = 0; // TOM PIT is disabled tom_timer_divider = 0; tom_timer_counter = 0; memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render)); -} +} // // TOM byte access (read) // - -unsigned tom_byte_read(unsigned int offset) +uint8 TOMReadByte(uint32 offset, uint32 who/*=UNKNOWN*/) { //???Is this needed??? // It seems so. Perhaps it's the +$8000 offset being written to (32-bit interface)? // However, the 32-bit interface is WRITE ONLY, so that can't be it... // Also, the 68K CANNOT make use of the 32-bit interface, since its bus width is only 16-bits... - offset &= 0xFF3FFF; +// offset &= 0xFF3FFF; #ifdef TOM_DEBUG WriteLog("TOM: Reading byte at %06X\n", offset); #endif if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) - return gpu_byte_read(offset); + return GPUReadByte(offset, who); else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000)) - return gpu_byte_read(offset); + return GPUReadByte(offset, who); else if ((offset >= 0xF00010) && (offset < 0xF00028)) - return op_byte_read(offset); + return OPReadByte(offset, who); else if ((offset >= 0xF02200) && (offset < 0xF022A0)) - return blitter_byte_read(offset); + return BlitterReadByte(offset, who); else if (offset == 0xF00050) return tom_timer_prescaler >> 8; else if (offset == 0xF00051) @@ -861,50 +1166,53 @@ unsigned tom_byte_read(unsigned int offset) // // TOM word access (read) // - -unsigned tom_word_read(unsigned int offset) +uint16 TOMReadWord(uint32 offset, uint32 who/*=UNKNOWN*/) { //???Is this needed??? - offset &= 0xFF3FFF; +// offset &= 0xFF3FFF; #ifdef TOM_DEBUG WriteLog("TOM: Reading word at %06X\n", offset); #endif +if (offset >= 0xF02000 && offset <= 0xF020FF) + WriteLog("TOM: Read attempted from GPU register file by %s (unimplemented)!\n", whoName[who]); + if (offset == 0xF000E0) { - uint16 data = (tom_puck_int_pending << 4) | (tom_timer_int_pending << 3) + 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); //WriteLog("tom: interrupt status is 0x%.4x \n",data); return data; } - else if (offset == 0xF00006) // VC +//Shoud be handled by the jaguar main loop now... And it is! ;-) +/* else if (offset == 0xF00006) // VC // What if we're in interlaced mode? // According to docs, in non-interlace mode VC is ALWAYS even... // return (tom_scanline << 1);// + 1; //But it's causing Rayman to be fucked up... Why??? - return (tom_scanline << 1) + 1; +//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)) - return gpu_word_read(offset); + return GPUReadWord(offset, who); else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000)) - return gpu_word_read(offset); + return GPUReadWord(offset, who); else if ((offset >= 0xF00010) && (offset < 0xF00028)) - return op_word_read(offset); + return OPReadWord(offset, who); else if ((offset >= 0xF02200) && (offset < 0xF022A0)) - return blitter_word_read(offset); + return BlitterReadWord(offset, who); else if (offset == 0xF00050) return tom_timer_prescaler; else if (offset == 0xF00052) return tom_timer_divider; offset &= 0x3FFF; - return (tom_byte_read(offset) << 8) | tom_byte_read(offset+1); + return (TOMReadByte(offset, who) << 8) | TOMReadByte(offset + 1, who); } // // TOM byte access (write) // - -void tom_byte_write(unsigned offset, unsigned data) +void TOMWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) { //???Is this needed??? // Perhaps on the writes--32-bit writes that is! And masked with FF7FFF... @@ -916,46 +1224,46 @@ void tom_byte_write(unsigned offset, unsigned data) if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) { - gpu_byte_write(offset, data); + GPUWriteByte(offset, data, who); return; } else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000)) { - gpu_byte_write(offset, data); + GPUWriteByte(offset, data, who); return; } else if ((offset >= 0xF00010) && (offset < 0xF00028)) { - op_byte_write(offset, data); + OPWriteByte(offset, data, who); return; } else if ((offset >= 0xF02200) && (offset < 0xF022A0)) { - blitter_byte_write(offset, data); + BlitterWriteByte(offset, data, who); return; } else if (offset == 0xF00050) { tom_timer_prescaler = (tom_timer_prescaler & 0x00FF) | (data << 8); - tom_reset_timer(); + TOMResetPIT(); return; } else if (offset == 0xF00051) { tom_timer_prescaler = (tom_timer_prescaler & 0xFF00) | data; - tom_reset_timer(); + TOMResetPIT(); return; } else if (offset == 0xF00052) { tom_timer_divider = (tom_timer_divider & 0x00FF) | (data << 8); - tom_reset_timer(); + TOMResetPIT(); return; } else if (offset == 0xF00053) { tom_timer_divider = (tom_timer_divider & 0xFF00) | data; - tom_reset_timer(); + TOMResetPIT(); return; } else if (offset >= 0xF00400 && offset <= 0xF007FF) // CLUT (A & B) @@ -971,8 +1279,7 @@ void tom_byte_write(unsigned offset, unsigned data) // // TOM word access (write) // - -void tom_word_write(unsigned offset, unsigned data) +void TOMWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/) { //???Is this needed??? offset &= 0xFF3FFF; @@ -980,41 +1287,49 @@ void tom_word_write(unsigned offset, unsigned data) #ifdef TOM_DEBUG WriteLog("TOM: Writing word %04X at %06X\n", data, offset); #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 >= 0xF02000 && offset <= 0xF020FF) + WriteLog("TOM: Write attempted to GPU register file by %s (unimplemented)!\n", whoName[who]); if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20)) { - gpu_word_write(offset, data); + GPUWriteWord(offset, data, who); return; } else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000)) { - gpu_word_write(offset, data); + GPUWriteWord(offset, data, who); return; } - else if ((offset >= 0xF00000) && (offset < 0xF00002)) +//What's so special about this? +/* else if ((offset >= 0xF00000) && (offset < 0xF00002)) { - tom_byte_write(offset, data >> 8); - tom_byte_write(offset+1, data & 0xFF); - } + TOMWriteByte(offset, data >> 8); + TOMWriteByte(offset+1, data & 0xFF); + }*/ else if ((offset >= 0xF00010) && (offset < 0xF00028)) { - op_word_write(offset, data); + OPWriteWord(offset, data, who); return; } else if (offset == 0xF00050) { tom_timer_prescaler = data; - tom_reset_timer(); + TOMResetPIT(); return; } else if (offset == 0xF00052) { tom_timer_divider = data; - tom_reset_timer(); + TOMResetPIT(); return; } else if (offset == 0xF000E0) { +//Check this out... if (data & 0x0100) tom_video_int_pending = 0; if (data & 0x0200) @@ -1024,11 +1339,11 @@ void tom_word_write(unsigned offset, unsigned data) if (data & 0x0800) tom_timer_int_pending = 0; if (data & 0x1000) - tom_puck_int_pending = 0; + tom_jerry_int_pending = 0; } else if ((offset >= 0xF02200) && (offset <= 0xF0229F)) { - blitter_word_write(offset, data); + BlitterWriteWord(offset, data, who); return; } else if (offset >= 0xF00400 && offset <= 0xF007FE) // CLUT (A & B) @@ -1048,96 +1363,100 @@ void tom_word_write(unsigned offset, unsigned data) if (offset == 0x2E || offset == 0x36 || offset == 0x54) data &= 0x03FF; // These are all 10-bit registers - tom_byte_write(offset, data >> 8); - tom_byte_write(offset+1, data & 0xFF); + TOMWriteByte(offset, data >> 8, who); + TOMWriteByte(offset+1, data & 0xFF, who); - // detect screen resolution changes - if ((offset >= 0x28) && (offset <= 0x4F)) - { if (offset == VDB) - WriteLog("TOM: Vertical Display Begin written: %04X\n", data); + WriteLog("TOM: Vertical Display Begin written by %s: %u\n", whoName[who], data); if (offset == VDE) - WriteLog("TOM: Vertical Display End written: %04X\n", data); + WriteLog("TOM: Vertical Display End written by %s: %u\n", whoName[who], data); if (offset == VP) - WriteLog("TOM: Vertical Period written: %04X (%sinterlaced)\n", data, (data & 0x01 ? "non-" : "")); + WriteLog("TOM: Vertical Period written by %s: %u (%sinterlaced)\n", whoName[who], data, (data & 0x01 ? "non-" : "")); if (offset == HDB1) - WriteLog("TOM: Horizontal Display Begin 1 written: %04X\n", data); + WriteLog("TOM: Horizontal Display Begin 1 written by %s: %u\n", whoName[who], data); if (offset == HDE) - WriteLog("TOM: Horizontal Display End written: %04X\n", data); + WriteLog("TOM: Horizontal Display End written by %s: %u\n", whoName[who], data); if (offset == HP) - WriteLog("TOM: Horizontal Period written: %04X\n", data); + WriteLog("TOM: Horizontal Period written by %s: %u (+1*2 = %u)\n", whoName[who], data, (data + 1) * 2); +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 == 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: %04X\n", data); + 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)); + // detect screen resolution changes +//This may go away in the future, if we do the virtualized screen thing... +//This may go away soon! + if ((offset >= 0x28) && (offset <= 0x4F)) + { uint32 width = tom_getVideoModeWidth(), height = tom_getVideoModeHeight(); tom_real_internal_width = width; - if (width == 640) - { - 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)) { - ws_audio_done(); - - static char window_title[256]; - delete surface; - tom_width = width, tom_height = height; - Format format(16, 0x007C00, 0x00003E0, 0x0000001F); - surface = new Surface(tom_width, tom_height, format); - console.close(); - sprintf(window_title, "Virtual Jaguar (%i x %i)", (int)tom_width, (int)tom_height); - console.open(window_title, width, tom_height, format); - - ws_audio_init(); - ws_audio_reset(); + ResizeScreen(tom_width, tom_height); } } } int tom_irq_enabled(int irq) { - return jaguar_byte_read(0xF000E1) & (1 << 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); } -void tom_set_irq_latch(int irq, int enabled) +//unused +/*void tom_set_irq_latch(int irq, int enabled) { tom_ram_8[0xE0] = (tom_ram_8[0xE0] & (~(1< 0) + if (tom_timer_prescaler) { tom_timer_counter -= cycles; if (tom_timer_counter <= 0) { tom_set_pending_timer_int(); - gpu_set_irq_line(2, 1); - if ((tom_irq_enabled(IRQ_TIMER)) && (jaguar_interrupt_handler_is_valid(64))) - m68k_set_irq(7); // Cause a 68000 NMI... + GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // GPUSetIRQLine does the 'IRQ enabled' checking + if (tom_irq_enabled(IRQ_TIMER))//get rid of this crap -> && jaguar_interrupt_handler_is_valid(64)) + m68k_set_irq(7); // Cause a 68000 NMI... - tom_reset_timer(); + TOMResetPIT(); } } }