#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 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
+//#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, though...)
//#define TOM_DEBUG
-extern uint32 jaguar_mainRom_crc32;
extern uint8 objectp_running;
static uint8 * tom_ram_8;
render_xxx_scanline_fn * scanline_render[8];
-// Screen info for various games...
+// 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
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;
blue = (((uint32)bluecv[chrm][chrl]) * y) >> 11;
color = (red << 10) | (green << 5) | blue;
}
+
tom_cry_rgb_mix_lut[i] = color;
}
}
//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) - LEFT_VISIBLE_HC; // Get start position in HC ticks
+ // 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)
//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) - LEFT_VISIBLE_HC; // Get start position in HC ticks
+ 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;
//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) - LEFT_VISIBLE_HC; // Get start position in HC ticks
+ 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;
//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) - LEFT_VISIBLE_HC; // Get start position in HC ticks
+ 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
inActiveDisplayArea = false;
+//Try to take PAL into account...
+uint16 topVisible = (vjs.hardwareTypeNTSC ? TOP_VISIBLE_VC : TOP_VISIBLE_VC_PAL),
+ bottomVisible = (vjs.hardwareTypeNTSC ? BOTTOM_VISIBLE_VC : BOTTOM_VISIBLE_VC_PAL);
// Here's our virtualized scanline code...
- if (scanline >= TOP_VISIBLE_VC && scanline < BOTTOM_VISIBLE_VC)
+ if (scanline >= topVisible && scanline < bottomVisible)
{
if (inActiveDisplayArea)
scanline_render[tom_getVideoMode()](TOMBackbuffer);
//
void tom_init(void)
{
+ memory_malloc_secure((void **)&tom_cry_rgb_mix_lut, 2 * 0x10000, "CRY/RGB mixed mode LUT");
+
op_init();
blitter_init();
//This should be done by JERRY! pcm_init();
// gpu_done();
// dsp_done();
memory_free(tom_ram_8);
+ memory_free(tom_cry_rgb_mix_lut);
}
/*uint32 tom_getHBlankWidthInPixels(void)
// 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 (RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC) / pwidth;
+ 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);
+// 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
// 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 !!!
- return 240; // Set virtual screen height to 240 lines...
+//Also, doesn't reflect PAL Jaguar either... !!! FIX !!! [DONE]
+// return 240; // Set virtual screen height to 240 lines...
+ return (vjs.hardwareTypeNTSC ? 240 : 256);
}
//
//
void tom_reset(void)
{
-// extern bool hardwareTypeNTSC;
-
op_reset();
blitter_reset();
//This should be done by JERRY! pcm_reset();
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));
void TOMResetPIT(void)
{
- if (!tom_timer_prescaler || !tom_timer_divider)
- tom_timer_counter = 0;
- else
-//Probably should *add* this amount to the counter to retain cycle accuracy! !!! FIX !!!
-//Also, why +1???
- tom_timer_counter = (1 + tom_timer_prescaler) * (1 + tom_timer_divider);
+//Probably should *add* this amount to the counter to retain cycle accuracy! !!! FIX !!! [DONE]
+//Also, why +1??? 'Cause that's what it says in the JTRM...!
+//There is a small problem with this approach: If both the prescaler and the divider are equal
+//to $FFFF then the counter won't be large enough to handle it. !!! FIX !!!
+ if (tom_timer_prescaler)
+ tom_timer_counter += (1 + tom_timer_prescaler) * (1 + tom_timer_divider);
// WriteLog("tom: reseting timer to 0x%.8x (%i)\n",tom_timer_counter,tom_timer_counter);
}
//
// TOM Programmable Interrupt Timer handler
+// NOTE: TOM's PIT is only enabled if the prescaler is != 0
//
void TOMExecPIT(uint32 cycles)
{
- if (tom_timer_counter > 0)
+ if (tom_timer_prescaler)
{
tom_timer_counter -= cycles;
if (tom_timer_counter <= 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...
+ 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...
TOMResetPIT();
}
projects / virtualjaguar / blobdiff