// license:BSD-3-Clause // copyright-holders:Aaron Giles /*************************************************************************** Atari Jaguar hardware **************************************************************************** ------------------------------------------------------------ TOM REGISTERS ------------------------------------------------------------ F00000-F0FFFF R/W xxxxxxxx xxxxxxxx Internal Registers F00000 R/W -x-xx--- xxxxxxxx MEMCON1 - memory config reg 1 -x------ -------- (CPU32 - is the CPU 32bits?) ---xx--- -------- (IOSPEED - external I/O clock cycles) -------- x------- (FASTROM - reduces ROM clock cycles) -------- -xx----- (DRAMSPEED - sets RAM clock cycles) -------- ---xx--- (ROMSPEED - sets ROM clock cycles) -------- -----xx- (ROMWIDTH - sets width of ROM: 8,16,32,64 bits) -------- -------x (ROMHI - controls ROM mapping) F00002 R/W --xxxxxx xxxxxxxx MEMCON2 - memory config reg 2 --x----- -------- (HILO - image display bit order) ---x---- -------- (BIGEND - big endian addressing?) ----xxxx -------- (REFRATE - DRAM refresh rate) -------- xx------ (DWIDTH1 - DRAM1 width: 8,16,32,64 bits) -------- --xx---- (COLS1 - DRAM1 columns: 256,512,1024,2048) -------- ----xx-- (DWIDTH0 - DRAM0 width: 8,16,32,64 bits) -------- ------xx (COLS0 - DRAM0 columns: 256,512,1024,2048) F00004 R/W -----xxx xxxxxxxx HC - horizontal count -----x-- -------- (which half of the display) ------xx xxxxxxxx (10-bit counter) F00006 R/W ----xxxx xxxxxxxx VC - vertical count ----x--- -------- (which field is being generated) -----xxx xxxxxxxx (11-bit counter) F00008 R -----xxx xxxxxxxx LPH - light pen horizontal position F0000A R -----xxx xxxxxxxx LPV - light pen vertical position F00010-F00017 R xxxxxxxx xxxxxxxx OB - current object code from the graphics processor F00020-F00023 W xxxxxxxx xxxxxxxx OLP - start of the object list F00026 W -------- -------x OBF - object processor flag F00028 W ----xxxx xxxxxxxx VMODE - video mode W ----xxx- -------- (PWIDTH1-8 - width of pixel in video clock cycles) W -------x -------- (VARMOD - enable variable color resolution) W -------- x------- (BGEN - clear line buffere to BG color) W -------- -x------ (CSYNC - enable composite sync on VSYNC) W -------- --x----- (BINC - local border color if INCEN) W -------- ---x---- (INCEN - encrustation enable) W -------- ----x--- (GENLOCK - enable genlock) W -------- -----xx- (MODE - CRY16,RGB24,DIRECT16,RGB16) W -------- -------x (VIDEN - enables video) F0002A W xxxxxxxx xxxxxxxx BORD1 - border color (red/green) F0002C W -------- xxxxxxxx BORD2 - border color (blue) F0002E W ------xx xxxxxxxx HP - horizontal period F00030 W -----xxx xxxxxxxx HBB - horizontal blanking begin F00032 W -----xxx xxxxxxxx HBE - horizontal blanking end F00034 W -----xxx xxxxxxxx HSYNC - horizontal sync F00036 W ------xx xxxxxxxx HVS - horizontal vertical sync F00038 W -----xxx xxxxxxxx HDB1 - horizontal display begin 1 F0003A W -----xxx xxxxxxxx HDB2 - horizontal display begin 2 F0003C W -----xxx xxxxxxxx HDE - horizontal display end F0003E W -----xxx xxxxxxxx VP - vertical period F00040 W -----xxx xxxxxxxx VBB - vertical blanking begin F00042 W -----xxx xxxxxxxx VBE - vertical blanking end F00044 W -----xxx xxxxxxxx VS - vertical sync F00046 W -----xxx xxxxxxxx VDB - vertical display begin F00048 W -----xxx xxxxxxxx VDE - vertical display end F0004A W -----xxx xxxxxxxx VEB - vertical equalization begin F0004C W -----xxx xxxxxxxx VEE - vertical equalization end F0004E W -----xxx xxxxxxxx VI - vertical interrupt F00050 W xxxxxxxx xxxxxxxx PIT0 - programmable interrupt timer 0 F00052 W xxxxxxxx xxxxxxxx PIT1 - programmable interrupt timer 1 F00054 W ------xx xxxxxxxx HEQ - horizontal equalization end F00058 W xxxxxxxx xxxxxxxx BG - background color F000E0 R/W ---xxxxx ---xxxxx INT1 - CPU interrupt control register ---x---- -------- (C_JERCLR - clear pending Jerry ints) ----x--- -------- (C_PITCLR - clear pending PIT ints) -----x-- -------- (C_OPCLR - clear pending object processor ints) ------x- -------- (C_GPUCLR - clear pending graphics processor ints) -------x -------- (C_VIDCLR - clear pending video timebase ints) -------- ---x---- (C_JERENA - enable Jerry ints) -------- ----x--- (C_PITENA - enable PIT ints) -------- -----x-- (C_OPENA - enable object processor ints) -------- ------x- (C_GPUENA - enable graphics processor ints) -------- -------x (C_VIDENA - enable video timebase ints) F000E2 W -------- -------- INT2 - CPU interrupt resume register F00400-F005FF R/W xxxxxxxx xxxxxxxx CLUT - color lookup table A F00600-F007FF R/W xxxxxxxx xxxxxxxx CLUT - color lookup table B F00800-F00D9F R/W xxxxxxxx xxxxxxxx LBUF - line buffer A F01000-F0159F R/W xxxxxxxx xxxxxxxx LBUF - line buffer B F01800-F01D9F R/W xxxxxxxx xxxxxxxx LBUF - line buffer currently selected ------------------------------------------------------------ F02000-F021FF R/W xxxxxxxx xxxxxxxx GPU control registers F02100 R/W xxxxxxxx xxxxxxxx G_FLAGS - GPU flags register R/W x------- -------- (DMAEN - DMA enable) R/W -x------ -------- (REGPAGE - register page) W --x----- -------- (G_BLITCLR - clear blitter interrupt) W ---x---- -------- (G_OPCLR - clear object processor int) W ----x--- -------- (G_PITCLR - clear PIT interrupt) W -----x-- -------- (G_JERCLR - clear Jerry interrupt) W ------x- -------- (G_CPUCLR - clear CPU interrupt) R/W -------x -------- (G_BLITENA - enable blitter interrupt) R/W -------- x------- (G_OPENA - enable object processor int) R/W -------- -x------ (G_PITENA - enable PIT interrupt) R/W -------- --x----- (G_JERENA - enable Jerry interrupt) R/W -------- ---x---- (G_CPUENA - enable CPU interrupt) R/W -------- ----x--- (IMASK - interrupt mask) R/W -------- -----x-- (NEGA_FLAG - ALU negative) R/W -------- ------x- (CARRY_FLAG - ALU carry) R/W -------- -------x (ZERO_FLAG - ALU zero) F02104 W -------- ----xxxx G_MTXC - matrix control register W -------- ----x--- (MATCOL - column/row major) W -------- -----xxx (MATRIX3-15 - matrix width) F02108 W ----xxxx xxxxxx-- G_MTXA - matrix address register F0210C W -------- -----xxx G_END - data organization register W -------- -----x-- (BIG_INST - big endian instruction fetch) W -------- ------x- (BIG_PIX - big endian pixels) W -------- -------x (BIG_IO - big endian I/O) F02110 R/W xxxxxxxx xxxxxxxx G_PC - GPU program counter F02114 R/W xxxxxxxx xx-xxxxx G_CTRL - GPU control/status register R xxxx---- -------- (VERSION - GPU version code) R/W ----x--- -------- (BUS_HOG - hog the bus!) R/W -----x-- -------- (G_BLITLAT - blitter interrupt latch) R/W ------x- -------- (G_OPLAT - object processor int latch) R/W -------x -------- (G_PITLAT - PIT interrupt latch) R/W -------- x------- (G_JERLAT - Jerry interrupt latch) R/W -------- -x------ (G_CPULAT - CPU interrupt latch) R/W -------- ---x---- (SINGLE_GO - single step one instruction) R/W -------- ----x--- (SINGLE_STEP - single step mode) R/W -------- -----x-- (FORCEINT0 - cause interrupt 0 on GPU) R/W -------- ------x- (CPUINT - send GPU interrupt to CPU) R/W -------- -------x (GPUGO - enable GPU execution) F02118-F0211B R/W xxxxxxxx xxxxxxxx G_HIDATA - high data register F0211C-F0211F R xxxxxxxx xxxxxxxx G_REMAIN - divide unit remainder F0211C W -------- -------x G_DIVCTRL - divide unit control W -------- -------x (DIV_OFFSET - 1=16.16 divide, 0=32-bit divide) ------------------------------------------------------------ ****************************************************************************/ #include "emu.h" #include "cpu/mips/mips1.h" #include "cpu/m68000/m68000.h" #include "includes/jaguar.h" #include "jagblit.h" #define ENABLE_BORDERS 0 #define LOG_BLITS 0 #define LOG_BAD_BLITS 0 #define LOG_BLITTER_STATS 0 #define LOG_BLITTER_WRITE 0 #define LOG_UNHANDLED_BLITS 0 // interrupts to main CPU: // 0 = video (on the VI scanline) // 1 = GPU (write from GPU coprocessor) // 2 = object (stop object interrupt in display list) // 3 = timer (from the PIT) // 4 = jerry /* GPU registers */ enum { MEMCON1, MEMCON2, HC, VC, LPH, LPV, GPU0, GPU1, OB_HH, OB_HL, OB_LH, OB_LL, GPU2, GPU3, GPU4, GPU5, OLP_L, OLP_H, GPU6, OBF, VMODE, BORD1, BORD2, HP, HBB, HBE, HSYNC, HVS, HDB1, HDB2, HDE, VP, VBB, VBE, VS, VDB, VDE, VEB, VEE, VI, PIT0, PIT1, HEQ, GPU7, BG, INT1 = 0xe0/2, INT2, GPU_REGS }; /************************************* * * Prototypes * *************************************/ /************************************* * * Compute X/Y coordinates * *************************************/ inline void jaguar_state::get_crosshair_xy(int player, int &x, int &y) { const rectangle &visarea = m_screen->visible_area(); /* only 2 lightguns are connected */ x = visarea.left() + (((ioport(player ? "FAKE2_X" : "FAKE1_X")->read() & 0xff) * visarea.width()) >> 8); y = visarea.top() + (((ioport(player ? "FAKE2_Y" : "FAKE1_Y")->read() & 0xff) * visarea.height()) >> 8); } /************************************* * * Horizontal display values * *************************************/ inline int jaguar_state::effective_hvalue(int value) { if (!(value & 0x400)) return value & 0x3ff; else return (value & 0x3ff) + (m_gpu_regs[HP] & 0x3ff) + 1; } /************************************* * * Object processor timer * *************************************/ inline bool jaguar_state::adjust_object_timer(int vc) { /* extract the display begin registers */ int hdbpix[2]; hdbpix[0] = (m_gpu_regs[HDB1] & 0x7ff) / 2; hdbpix[1] = (m_gpu_regs[HDB2] & 0x7ff) / 2; /* sort */ if (hdbpix[0] > hdbpix[1]) { int temp = hdbpix[0]; hdbpix[0] = hdbpix[1]; hdbpix[1] = temp; } /* select the target one */ int hdb = hdbpix[vc % 2]; /* if setting the second one in a line, make sure we will ever actually hit it */ if (vc % 2 == 1 && (hdbpix[1] == hdbpix[0] || hdbpix[1] >= m_screen->width())) return false; /* adjust the timer */ m_object_timer->adjust(m_screen->time_until_pos(vc / 2, hdb), vc | (hdb << 16)); return true; } /************************************* * * Main CPU interrupts * *************************************/ void jaguar_state::update_cpu_irq() { if ((m_cpu_irq_state & m_gpu_regs[INT1] & 0x1f) != 0) m_maincpu->set_input_line(m_is_r3000 ? INPUT_LINE_IRQ4 : M68K_IRQ_6, ASSERT_LINE); else m_maincpu->set_input_line(m_is_r3000 ? INPUT_LINE_IRQ4 : M68K_IRQ_6, CLEAR_LINE); } WRITE_LINE_MEMBER( jaguar_state::gpu_cpu_int ) { m_cpu_irq_state |= 2; update_cpu_irq(); } WRITE_LINE_MEMBER( jaguar_state::dsp_cpu_int ) { m_cpu_irq_state |= 16; update_cpu_irq(); } /************************************* * * Palette init * *************************************/ void jaguar_state::jagpal_ycc(palette_device &palette) const { // construct YCC Color lookup static const uint8_t red_lookup[256] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 19, 0, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 64, 43, 21, 0, 102,102,102,102,102,102,102,102,102,102,102, 95, 71, 47, 23, 0, 135,135,135,135,135,135,135,135,135,135,130,104, 78, 52, 26, 0, 169,169,169,169,169,169,169,169,169,170,141,113, 85, 56, 28, 0, 203,203,203,203,203,203,203,203,203,183,153,122, 91, 61, 30, 0, 237,237,237,237,237,237,237,237,230,197,164,131, 98, 65, 32, 0, 255,255,255,255,255,255,255,255,247,214,181,148,115, 82, 49, 17, 255,255,255,255,255,255,255,255,255,235,204,173,143,112, 81, 51, 255,255,255,255,255,255,255,255,255,255,227,198,170,141,113, 85, 255,255,255,255,255,255,255,255,255,255,249,223,197,171,145,119, 255,255,255,255,255,255,255,255,255,255,255,248,224,200,177,153, 255,255,255,255,255,255,255,255,255,255,255,255,252,230,208,187, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,240,221, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255 }; static const uint8_t grn_lookup[256] = { 0, 17, 34, 51, 68, 85,102,119,136,153,170,187,204,221,238,255, 0, 19, 38, 57, 77, 96,115,134,154,173,182,211,231,250,255,255, 0, 21, 43, 64, 86,107,129,150,172,193,215,236,255,255,255,255, 0, 23, 47, 71, 96,119,142,166,190,214,238,255,255,255,255,255, 0, 26, 52, 78,104,130,156,182,208,234,255,255,255,255,255,255, 0, 28, 56, 85,113,141,170,198,226,255,255,255,255,255,255,255, 0, 30, 61, 91,122,153,183,214,244,255,255,255,255,255,255,255, 0, 32, 65, 98,131,164,197,230,255,255,255,255,255,255,255,255, 0, 32, 65, 98,131,164,197,230,255,255,255,255,255,255,255,255, 0, 30, 61, 91,122,153,183,214,244,255,255,255,255,255,255,255, 0, 28, 56, 85,113,141,170,198,226,255,255,255,255,255,255,255, 0, 26, 52, 78,104,130,156,182,208,234,255,255,255,255,255,255, 0, 23, 47, 71, 96,119,142,166,190,214,238,255,255,255,255,255, 0, 21, 43, 64, 86,107,129,150,172,193,215,236,255,255,255,255, 0, 19, 38, 57, 77, 96,115,134,154,173,182,211,231,250,255,255, 0, 17, 34, 51, 68, 85,102,119,136,153,170,187,204,221,238,255 }; static const uint8_t blu_lookup[256] = { 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,240,221, 255,255,255,255,255,255,255,255,255,255,255,255,252,230,208,187, 255,255,255,255,255,255,255,255,255,255,255,248,224,200,177,153, 255,255,255,255,255,255,255,255,255,255,249,223,197,171,145,119, 255,255,255,255,255,255,255,255,255,255,227,198,170,141,113, 85, 255,255,255,255,255,255,255,255,255,235,204,173,143,112, 81, 51, 255,255,255,255,255,255,255,255,247,214,181,148,115, 82, 49, 17, 237,237,237,237,237,237,237,237,230,197,164,131, 98, 65, 32, 0, 203,203,203,203,203,203,203,203,203,183,153,122, 91, 61, 30, 0, 169,169,169,169,169,169,169,169,169,170,141,113, 85, 56, 28, 0, 135,135,135,135,135,135,135,135,135,135,130,104, 78, 52, 26, 0, 102,102,102,102,102,102,102,102,102,102,102, 95, 71, 47, 23, 0, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 64, 43, 21, 0, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; for (int i = 0; i < 65536; i++) { const u8 r = (red_lookup[i >> 8] * (i & 0xff)) / 0xff; const u8 g = (grn_lookup[i >> 8] * (i & 0xff)) / 0xff; const u8 b = (blu_lookup[i >> 8] * (i & 0xff)) / 0xff; palette.set_pen_color(i, rgb_t(r, g, b)); } } void jaguar_state::set_palette(uint16_t vmode) { int i; /* switch off the mode */ switch (vmode & 0x106) { /* YCC full */ case 0x000: /* RGB24 */ case 0x002: for (i = 0; i < 65536; i++) m_pen_table[i] = m_palette->pen(i); break; /* YCC VARMOD */ case 0x100: for (i = 0; i < 65536; i++) { /* if the low bit is set, treat it as 5-5-5 RGB instead */ if (i & 1) m_pen_table[i] = rgb_t(pal5bit(i >> 11), pal5bit(i >> 1), pal5bit(i >> 6)); else m_pen_table[i] = m_palette->pen((i & ~0xff) | pal7bit(i >> 1)); } break; /* RGB VARMOD */ case 0x106: for (i = 0; i < 65536; i++) { if (i & 1) // FIXME: controls RGB 5-5-5 / 5-6-5 format or it's just ignored? Used by UBI Soft logo in Rayman m_pen_table[i] = rgb_t(pal5bit(i >> 11), pal5bit(i >> 1), pal5bit(i >> 6)); else m_pen_table[i] = rgb_t(pal5bit(i >> 11), pal6bit(i >> 0), pal5bit(i >> 6)); } break; /* RGB full */ case 0x006: for (i = 0; i < 65536; i++) m_pen_table[i] = rgb_t(pal5bit(i >> 11), pal6bit(i >> 0), pal5bit(i >> 6)); break; /* others */ default: logerror("Can't handle mode %X\n", vmode); fprintf(stderr, "Can't handle mode %X\n", vmode); break; } } /************************************* * * 32-bit access to the blitter * *************************************/ void jaguar_state::blitter_run() { uint32_t command = m_blitter_regs[B_CMD] & STATIC_COMMAND_MASK; uint32_t a1flags = m_blitter_regs[A1_FLAGS] & STATIC_FLAGS_MASK; uint32_t a2flags = m_blitter_regs[A2_FLAGS] & STATIC_FLAGS_MASK; g_profiler.start(PROFILER_USER1); if (a1flags == a2flags) { if (command == 0x09800001 && a1flags == 0x010020) { blitter_09800001_010020_010020(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if (command == 0x09800009 && a1flags == 0x000020) { blitter_09800009_000020_000020(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if (command == 0x01800009 && a1flags == 0x000028) { blitter_01800009_000028_000028(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if (command == 0x01800001 && a1flags == 0x000018) { blitter_01800001_000018_000018(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if (command == 0x01c00001 && a1flags == 0x000018) { blitter_01c00001_000018_000018(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } } if (command == 0x00010000) { blitter_00010000_xxxxxx_xxxxxx(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if (command == 0x01800001) { blitter_01800001_xxxxxx_xxxxxx(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if ((command & 0x0ffff0ff) == 0x01800001) { blitter_x1800x01_xxxxxx_xxxxxx(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); return; } if (LOG_BLITTER_STATS) { static uint32_t blitter_stats[1000][4]; static uint64_t blitter_pixels[1000]; static int blitter_count = 0; static int reps = 0; int i; for (i = 0; i < blitter_count; i++) if (blitter_stats[i][0] == (m_blitter_regs[B_CMD] & STATIC_COMMAND_MASK) && blitter_stats[i][1] == (m_blitter_regs[A1_FLAGS] & STATIC_FLAGS_MASK) && blitter_stats[i][2] == (m_blitter_regs[A2_FLAGS] & STATIC_FLAGS_MASK)) break; if (i == blitter_count) { blitter_stats[i][0] = m_blitter_regs[B_CMD] & STATIC_COMMAND_MASK; blitter_stats[i][1] = m_blitter_regs[A1_FLAGS] & STATIC_FLAGS_MASK; blitter_stats[i][2] = m_blitter_regs[A2_FLAGS] & STATIC_FLAGS_MASK; blitter_stats[i][3] = 0; blitter_pixels[i] = 0; blitter_count++; } blitter_stats[i][3]++; blitter_pixels[i] += (m_blitter_regs[B_COUNT] & 0xffff) * (m_blitter_regs[B_COUNT] >> 16); if (++reps % 100 == 99) { osd_printf_debug("---\nBlitter stats:\n"); for (i = 0; i < blitter_count; i++) osd_printf_debug(" CMD=%08X A1=%08X A2=%08X %6d times, %016X pixels\n", blitter_stats[i][0], blitter_stats[i][1], blitter_stats[i][2], blitter_stats[i][3], blitter_pixels[i]); osd_printf_debug("---\n"); } } generic_blitter(m_blitter_regs[B_CMD], m_blitter_regs[A1_FLAGS], m_blitter_regs[A2_FLAGS]); g_profiler.stop(); } READ32_MEMBER( jaguar_state::blitter_r ) { switch (offset) { case B_CMD: /* B_CMD */ return m_blitter_status & 3; default: logerror("%s:Blitter read register @ F022%02X\n", machine().describe_context(), offset * 4); return 0; } } WRITE32_MEMBER( jaguar_state::blitter_w ) { COMBINE_DATA(&m_blitter_regs[offset]); if ((offset == B_CMD) && ACCESSING_BITS_0_15) { m_blitter_status = 0; int inner_count = m_blitter_regs[B_COUNT] & 0xffff; int outer_count = m_blitter_regs[B_COUNT] >> 16; timer_set(attotime::from_ticks(inner_count * outer_count, m_gpu->clock()), TID_BLITTER_DONE); blitter_run(); } if (LOG_BLITTER_WRITE) logerror("%s:Blitter write register @ F022%02X = %08X\n", machine().describe_context(), offset * 4, data); } /************************************* * * 16-bit TOM register access * *************************************/ READ16_MEMBER( jaguar_state::tom_regs_r ) { if (offset != INT1 && offset != INT2 && offset != HC && offset != VC) logerror("%s:TOM read register @ F00%03X\n", machine().describe_context(), offset * 2); switch (offset) { case INT1: return m_cpu_irq_state; case HC: return m_screen->hpos() % (m_screen->width() / 2); case VC: { uint8_t half_line; if(m_screen->hpos() >= (m_screen->width() / 2)) half_line = 1; else half_line = 0; return m_screen->vpos() * 2 + half_line; } } return m_gpu_regs[offset]; } WRITE16_MEMBER( jaguar_state::tom_regs_w ) { uint32_t reg_store = m_gpu_regs[offset]; attotime sample_period; if (offset < GPU_REGS) { COMBINE_DATA(&m_gpu_regs[offset]); switch (offset) { case MEMCON1: if((m_gpu_regs[offset] & 1) == 0) printf("Warning: ROMHI = 0!\n"); break; case PIT0: case PIT1: if (m_gpu_regs[PIT0] && m_gpu_regs[PIT0] != 0xffff) //FIXME: avoid too much small timers for now { sample_period = attotime::from_ticks((1+m_gpu_regs[PIT0]) * (1+m_gpu_regs[PIT1]), m_gpu->clock()/2); timer_set(sample_period, TID_PIT); } break; case INT1: m_cpu_irq_state &= ~(m_gpu_regs[INT1] >> 8); update_cpu_irq(); break; case VMODE: if (reg_store != m_gpu_regs[offset]) set_palette(m_gpu_regs[VMODE]); break; case OBF: /* clear GPU interrupt */ m_cpu_irq_state &= 0xfd; update_cpu_irq(); break; case HP: case HBB: case HBE: case HDB1: case HDB2: case HDE: case VP: case VBB: case VBE: case VDB: case VDE: { if (reg_store != m_gpu_regs[offset]) { int hperiod = 2 * ((m_gpu_regs[HP] & 0x3ff) + 1); int hbend = effective_hvalue(ENABLE_BORDERS ? m_gpu_regs[HBE] : std::min(m_gpu_regs[HDB1], m_gpu_regs[HDB2])); int hbstart = effective_hvalue(m_gpu_regs[ENABLE_BORDERS ? HBB : HDE]); int vperiod = (m_gpu_regs[VP] & 0x7ff) + 1; int vbend = std::max(m_gpu_regs[VBE],m_gpu_regs[VDB]) & 0x7ff; int vbstart = m_gpu_regs[VBB] & 0x7ff; /* adjust for the half-lines */ if (hperiod != 0 && vperiod != 0 && hbend < hbstart && vbend < vbstart && hbstart < hperiod) { rectangle visarea(hbend / 2, hbstart / 2 - 1, vbend / 2, vbstart / 2 - 1); m_screen->configure(hperiod / 2, vperiod / 2, visarea, HZ_TO_ATTOSECONDS(double(m_pixel_clock) * 2 / hperiod / vperiod)); } } break; } } } if (offset != INT2 && offset != VI && offset != INT1) logerror("%s:TOM write register @ F00%03X = %04X\n", machine().describe_context(), offset * 2, data); } /************************************* * * Gun input * *************************************/ READ32_MEMBER( jaguar_state::cojag_gun_input_r ) { int beamx, beamy; switch (offset) { case 0: get_crosshair_xy(1, beamx, beamy); return (beamy << 16) | (beamx ^ 0x1ff); case 1: get_crosshair_xy(0, beamx, beamy); return (beamy << 16) | (beamx ^ 0x1ff); case 2: return ioport("IN3")->read(); } return 0; } /************************************* * * Video system start * *************************************/ void jaguar_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { switch (id) { case TID_SCANLINE: scanline_update(param); break; case TID_BLITTER_DONE: m_blitter_status = 1; break; case TID_PIT: if (m_gpu_regs[INT1] & 0x8) { m_cpu_irq_state |= 8; update_cpu_irq(); } if (m_gpu_regs[PIT0] != 0) { attotime sample_period = attotime::from_ticks((1+m_gpu_regs[PIT0]) * (1+m_gpu_regs[PIT1]), m_gpu->clock()/2); timer_set(sample_period, TID_PIT); } break; case TID_SERIAL: serial_update(); break; case TID_GPU_SYNC: // if a command is still pending, and we haven't maxed out our timer, set a new one if (m_gpu_command_pending && param < 1000) timer_set(attotime::from_usec(50), TID_GPU_SYNC, ++param); break; } } void jaguar_state::scanline_update(int param) { int vc = param & 0xffff; int hdb = param >> 16; const rectangle &visarea = m_screen->visible_area(); /* only run if video is enabled and we are past the "display begin" */ if ((m_gpu_regs[VMODE] & 1) && vc >= (m_gpu_regs[VDB] & 0x7ff)) { uint32_t *dest = &m_screen_bitmap.pix32(vc >> 1); int maxx = visarea.right(); int hde = effective_hvalue(m_gpu_regs[HDE]) >> 1; uint16_t x,scanline[760]; uint8_t y,pixel_width = ((m_gpu_regs[VMODE]>>10)&3)+1; /* if we are first on this scanline, clear to the border color */ if (ENABLE_BORDERS && vc % 2 == 0) { rgb_t border = rgb_t(m_gpu_regs[BORD1] & 0xff, m_gpu_regs[BORD1] >> 8, m_gpu_regs[BORD2] & 0xff); for (x = visarea.left(); x <= visarea.right(); x++) dest[x] = border; } /* process the object list for this counter value */ process_object_list(vc, scanline); /* copy the data to the target, clipping */ if ((m_gpu_regs[VMODE] & 0x106) == 0x002) /* RGB24 */ { for (x = 0; x < 760 && hdb <= maxx && hdb < hde; x+=2) for (y = 0; y < pixel_width; y++) { uint8_t r = m_pen_table[(scanline[x]&0xff)|256]; uint8_t g = m_pen_table[(scanline[x]>>8)|512]; uint8_t b = m_pen_table[scanline[x+1]&0xff]; dest[hdb++] = rgb_t(r, g, b); } } else { for (x = 0; x < 760 && hdb <= maxx && hdb < hde; x++) for (y = 0; y < pixel_width; y++) dest[hdb++] = m_pen_table[scanline[x]]; } } /* adjust the timer in a loop, to handle missed cases */ do { /* handle vertical interrupts */ if (vc == m_gpu_regs[VI]) { m_cpu_irq_state |= 1; update_cpu_irq(); } /* point to the next counter value */ if (++vc / 2 >= m_screen->height()) vc = 0; } while (!adjust_object_timer(vc)); } void jaguar_state::video_start() { memset(&m_blitter_regs, 0, sizeof(m_blitter_regs)); memset(&m_gpu_regs, 0, sizeof(m_gpu_regs)); m_cpu_irq_state = 0; m_object_timer = timer_alloc(TID_SCANLINE); adjust_object_timer(0); m_screen_bitmap.allocate(760, 512); jagobj_init(); save_item(NAME(m_pen_table)); save_item(NAME(m_blitter_regs)); save_item(NAME(m_gpu_regs)); save_item(NAME(m_cpu_irq_state)); m_pixel_clock = m_is_cojag ? COJAG_PIXEL_CLOCK.value() : JAGUAR_CLOCK.value(); } void jaguar_state::device_postload() { update_cpu_irq(); } /************************************* * * Main refresh * *************************************/ uint32_t jaguar_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { /* if not enabled, just blank */ if (!(m_gpu_regs[VMODE] & 1)) { bitmap.fill(0, cliprect); return 0; } /* render the object list */ copybitmap(bitmap, m_screen_bitmap, 0, 0, 0, 0, cliprect); return 0; } /************************************* * * Object processor * *************************************/ #define INCLUDE_OBJECT_PROCESSOR #include "jagobj.hxx" /************************************* * * Blitter macros * *************************************/ /* generic blitters */ #define FUNCNAME generic_blitter #define COMMAND command #define A1FIXED a1flags #define A2FIXED a2flags #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME /* optimized common blitters */ #define FUNCNAME blitter_09800001_010020_010020 #define COMMAND 0x09800001 #define A1FIXED 0x010020 #define A2FIXED 0x010020 #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_09800009_000020_000020 #define COMMAND 0x09800009 #define A1FIXED 0x000020 #define A2FIXED 0x000020 #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_01800009_000028_000028 #define COMMAND 0x01800009 #define A1FIXED 0x000028 #define A2FIXED 0x000028 #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_01800001_000018_000018 #define COMMAND 0x01800001 #define A1FIXED 0x000018 #define A2FIXED 0x000018 #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_01c00001_000018_000018 #define COMMAND 0x01c00001 #define A1FIXED 0x000018 #define A2FIXED 0x000018 #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_00010000_xxxxxx_xxxxxx #define COMMAND 0x00010000 #define A1FIXED a1flags #define A2FIXED a2flags #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_01800001_xxxxxx_xxxxxx #define COMMAND 0x01800001 #define A1FIXED a1flags #define A2FIXED a2flags #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME #define FUNCNAME blitter_x1800x01_xxxxxx_xxxxxx #define COMMAND ((command & 0xf0000f00) | 0x01800001) #define A1FIXED a1flags #define A2FIXED a2flags #include "jagblit.hxx" #undef A2FIXED #undef A1FIXED #undef COMMAND #undef FUNCNAME