--- xmil/io/crtc.c 2004/08/08 15:14:08 1.6 +++ xmil/io/crtc.c 2004/08/13 01:35:59 1.11 @@ -1,5 +1,6 @@ #include "compiler.h" #include "scrnmng.h" +#include "z80core.h" #include "pccore.h" #include "iocore.h" #include "vram.h" @@ -20,58 +21,27 @@ static const UINT16 defpalgrph[64] = { 0x550, 0x55a, 0x5f0, 0x5fa, 0xf50, 0xf5a, 0xff0, 0xffa, 0x555, 0x55f, 0x5f5, 0x5ff, 0xf55, 0xf5f, 0xff5, 0xfff}; -static const CRTCSTAT crtcdefault = { - 0xaa, // PAL_B; - 0xcc, // PAL_R; - 0xf0, // PAL_G; - 0x00, // PLY -// {0, 1, 2, 3, 4, 5, 6, 7}, // TEXT_PAL[8] - 0, // SCRN_BITS - 0, // CRTC_NUM - - 0, // DISP_PAGE - 8, // FNT_XL - 8, // FNT_YL - 40, // TXT_XL - 25, // TXT_YL - 28, // TXT_YS - 320, // GRP_XL - 200, // GRP_YL -// 0, // CPU_BANK -// 0, // CRT_BANK - - 200, // CRT_YL - 232, // CRT_VS - 266, // CRT_VL - - 31, // TXT_VL - 10, // TXT_VLA - - 0, // TXT_TOP - 8, // fnty - - 0, // lastpal - - 0, // BLACKPAL - 0, // EXTPALMODE - 0, // EXTGRPHPAL - 0, // ZPRY - }; - - BYTE dispmode = SCRN64_INVALID; - BYTE pal_bank = PAL_NORMAL; - BYTE pal_disp = PAL_NORMAL; +static const UINT8 defrgbp[4] = {0xaa, 0xcc, 0xf0, 0x00}; +static const UINT8 defreg[18] = { + 55, 40, 45, 0x36, + 31, 10, 25, 28, + 7, 7, 0, 0, + 0, 0, 0, 0, 0, 0}; -void vrambank_patch(void) { + +void crtc_bankupdate(void) { UINT updatemask; + UINT8 dispmode; + UINT8 pal_bank; + UINT8 pal_disp; if (crtc.s.SCRN_BITS & 0x10) { - crtc.e.gram = GRP_RAM + GRAM_BANK1; + crtc.e.gram = gram + GRAM_BANK1; crtc.e.updatebit = UPDATE_VRAM1; } else { - crtc.e.gram = GRP_RAM + GRAM_BANK0; + crtc.e.gram = gram + GRAM_BANK0; crtc.e.updatebit = UPDATE_VRAM0; } dispmode = (crtc.s.SCRN_BITS & SCRN_DISPVRAM)?SCRN_BANK1:SCRN_BANK0; @@ -79,7 +49,8 @@ void vrambank_patch(void) { if ((!(crtc.s.EXTPALMODE & 0x80)) || (crtc.s.SCRN_BITS & SCRN_UNDERLINE)) { updatemask = 0x7ff; - if ((crtc.s.SCRN_BITS & SCRN_24KHZ) && (crtc.s.TXT_XL == 80)) { + if ((crtc.s.SCRN_BITS & SCRN_24KHZ) && + (crtc.s.reg[CRTCREG_HDISP] == 80)) { pal_bank = pal_disp = PAL_HIGHRESO; } if (crtc.s.SCRN_BITS & SCRN_TEXTYx2) { @@ -90,7 +61,7 @@ void vrambank_patch(void) { updatemask = 0x3ff; if (!(crtc.s.SCRN_BITS & SCRN_TEXTYx2)) { if (crtc.s.SCRN_BITS & SCRN_24KHZ) { - if (crtc.s.TXT_XL == 40) { + if (crtc.s.reg[CRTCREG_HDISP] == 40) { if (crtc.s.SCRN_BITS & SCRN_200LINE) { // width 40,25,0,2 dispmode |= SCRN64_320x200; } @@ -104,7 +75,7 @@ void vrambank_patch(void) { } } else { - if (crtc.s.TXT_XL == 40) { // width 40,25,0,1 + if (crtc.s.reg[CRTCREG_HDISP] == 40) { // width 40,25,0,1 if (crtc.s.EXTPALMODE & 0x10) { if (crtc.s.ZPRY & 0x10) { dispmode = SCRN64_L320x200x2 | @@ -135,7 +106,7 @@ void vrambank_patch(void) { } else { if (crtc.s.SCRN_BITS & SCRN_24KHZ) { - if (crtc.s.TXT_XL == 40) { + if (crtc.s.reg[CRTCREG_HDISP] == 40) { if (crtc.s.SCRN_BITS & SCRN_200LINE) { // width 40,12,0,2 dispmode |= SCRN64_320x100; } @@ -148,7 +119,7 @@ void vrambank_patch(void) { } } else { - if (crtc.s.TXT_XL == 40) { // width 40,12,0,1 + if (crtc.s.reg[CRTCREG_HDISP] == 40) { // width 40,12,0,1 if (crtc.s.EXTPALMODE & 0x10) { if (crtc.s.ZPRY & 0x10) { dispmode = SCRN64_320x100x2 | @@ -178,25 +149,33 @@ void vrambank_patch(void) { } } crtc.e.updatemask = updatemask; + crtc.e.dispmode = dispmode; + crtc.e.pal_bank = pal_bank; + crtc.e.pal_disp = pal_disp; } -static void crtc_updt(void) { +void crtc_regupdate(void) { + + UINT fonty; + SINT32 fontyclock; + crtc.e.pos = crtc.s.reg[CRTCREG_POSL] + + ((crtc.s.reg[CRTCREG_POSH] & 7) << 8); + + fonty = crtc.s.reg[CRTCREG_CHRCY] & 0x1f; if (crtc.s.SCRN_BITS & SCRN_24KHZ) { - crtc.s.fnty = (crtc.s.FNT_YL >> 1) & 0xfffe; - } - else { - crtc.s.fnty = crtc.s.FNT_YL & 0xfffe; - } - if (crtc.s.TXT_YL) { - crtc.s.CRT_YL = crtc.s.fnty * crtc.s.TXT_YL; - } - else { - crtc.s.CRT_YL = crtc.s.fnty * 1; + fonty >>= 1; } - crtc.s.CRT_VS = crtc.s.fnty * (crtc.s.TXT_YS + 1); - crtc.s.CRT_VL = (crtc.s.TXT_VL + 1) * crtc.s.fnty + crtc.s.TXT_VLA; -// TRACEOUT(("set> %d / %d / %d", crtc.s.CRT_YL, crtc.s.CRT_VS, crtc.s.CRT_VL)); + fonty += 1; + crtc.e.fonty = fonty; + crtc.e.yl = (crtc.s.reg[CRTCREG_VDISP] & 0x7f); + + fontyclock = fonty * RASTER_CLOCK; + crtc.e.dispclock = fontyclock * crtc.e.yl; + crtc.e.vsyncstart = fontyclock * ((crtc.s.reg[CRTCREG_VSYNC] & 0x7f) + 1); + crtc.e.vpulseclock = (crtc.s.reg[CRTCREG_PULSE] >> 4) * RASTER_CLOCK; + crtc.e.vl = fonty * ((crtc.s.reg[CRTCREG_VSIZE] & 0x7f) + 1) + + (crtc.s.reg[CRTCREG_VSIZEA] & 0x1f); } @@ -204,60 +183,20 @@ static void crtc_updt(void) { void IOOUTCALL crtc_o(UINT port, REG8 value) { - if (port == 0x1800) { - crtc.s.CRTC_NUM = value; - } - else if (port == 0x1801) { - switch(crtc.s.CRTC_NUM) { - case 0x01: - if (value <= 40) { - crtc.s.TXT_XL = 40; - } - else { - crtc.s.TXT_XL = 80; - } - vrambank_patch(); - break; - - case 0x04: - crtc.s.TXT_VL = value; - break; - - case 0x05: - crtc.s.TXT_VLA = value; - break; - - case 0x06: - crtc.s.TXT_YL = value; - break; - - case 0x07: - crtc.s.TXT_YS = value; - break; - - case 0x09: - crtc.s.FNT_YL = (WORD)value+1; - break; - - case 0x0c: - crtc.s.TXT_TOP &= 0xff; - crtc.s.TXT_TOP |= (value & 7) << 8; + port &= 0xff; + if (port == 0) { + crtc.s.regnum = value; + } + else if (port == 1) { + if (crtc.s.regnum < CRTCREG_MAX) { + if (crtc.s.reg[crtc.s.regnum] != value) { + crtc.s.reg[crtc.s.regnum] = value; + crtc_bankupdate(); makescrn.remakeattr = 1; - break; - - case 0x0d: - crtc.s.TXT_TOP &= 0x7ff; - crtc.s.TXT_TOP |= value; - makescrn.remakeattr = 1; - break; - - default: - return; + crtc_regupdate(); + scrnallflash = 1; + } } - crtc.s.GRP_XL = crtc.s.TXT_XL << 3; - crtc.s.GRP_YL = 200; - crtc_updt(); - scrnallflash = 1; /* 990220 puni */ } } @@ -274,11 +213,9 @@ void IOOUTCALL scrn_o(UINT port, REG8 va // pal_reset(); // ¤Ê¤ó¤Ç¡© scrnallflash = 1; makescrn.palandply = 1; - crtc_updt(); + crtc_regupdate(); } - vrambank_patch(); -// crtc.s.CPU_BANK = (BYTE)((crtc.s.SCRN_BITS & SCRN_ACCESSVRAM)?1:0); -// crtc.s.CRT_BANK = (BYTE)((crtc.s.SCRN_BITS & SCRN_DISPVRAM)?1:0); + crtc_bankupdate(); (void)port; } @@ -293,8 +230,8 @@ REG8 IOINPCALL scrn_i(UINT port) { void IOOUTCALL ply_o(UINT port, REG8 value) { - if (crtc.s.PLY != value) { - crtc.s.PLY = value; + if (crtc.s.rgbp[CRTC_PLY] != value) { + crtc.s.rgbp[CRTC_PLY] = value; makescrn.palandply = 1; } (void)port; @@ -303,7 +240,7 @@ void IOOUTCALL ply_o(UINT port, REG8 val REG8 IOINPCALL ply_i(UINT port) { (void)port; - return(crtc.s.PLY); + return(crtc.s.rgbp[CRTC_PLY]); } @@ -321,19 +258,13 @@ void IOOUTCALL palette_o(UINT port, REG8 return; } sft = (port >> (8 - 2)) & (3 << 2); - if (pal_bank & PAL_4096) { // use 4096palettes - switch(pal_bank & (PAL_4096FULL | PAL_4096BANK)) { - case 0: - num = ((port & 0xcc) << 4) + ((value & 0xc0) >> 4); - break; - - case 1: - num = ((port & 0xcc) << 2) + ((value & 0xc0) >> 6); - break; - - default: - num = ((port & 0xff) << 4) + (crtc.s.lastpal >> 4); - break; + if (crtc.e.pal_bank & PAL_4096) { // use 4096palettes + num = ((port & 0xff) << 4) + (crtc.s.lastpal >> 4); + if (!(crtc.e.pal_bank & PAL_4096FULL)) { + num &= 0xccc; + if (crtc.e.pal_bank & PAL_4096BANK) { + num >>= 2; + } } pal = crtc.p.grph4096[num]; pal &= ~((0x0f) << sft); @@ -344,42 +275,25 @@ void IOOUTCALL palette_o(UINT port, REG8 else { num = ((port & 0x80) >> 5) | ((port & 0x08) >> 2) | ((value & 0x80) >> 7); - if ((dispmode & SCRN64_MASK) == SCRN64_INVALID) { + if ((crtc.e.dispmode & SCRN64_MASK) == SCRN64_INVALID) { num |= (num << 3); } else { num += ((port & 0x40) >> 1) | ((port & 0x04) << 2) | ((value & 0x40) >> 3); } - pal = crtc.p.grph[pal_bank][num]; + pal = crtc.p.grph[crtc.e.pal_bank][num]; pal &= ~((0x0f) << sft); pal |= (value & 0x0f) << sft; - crtc.p.grph[pal_bank][num] = pal; - pal_setgrph(pal_bank, (REG8)num); + crtc.p.grph[crtc.e.pal_bank][num] = pal; + pal_setgrph(crtc.e.pal_bank, (REG8)num); } } else { - switch(port & 0xff00) { - case 0x1000: - if (crtc.s.PAL_B != value) { - crtc.s.PAL_B = value; - makescrn.palandply = 1; - } - break; - - case 0x1100: - if (crtc.s.PAL_R != value) { - crtc.s.PAL_R = value; - makescrn.palandply = 1; - } - break; - - case 0x1200: - if (crtc.s.PAL_G != value) { - crtc.s.PAL_G = value; - makescrn.palandply = 1; - } - break; + num = (port >> 8) & 3; + if (crtc.s.rgbp[num] != value) { + crtc.s.rgbp[num] = value; + makescrn.palandply = 1; } } } @@ -391,35 +305,27 @@ REG8 IOINPCALL palette_i(UINT port) { REG8 sft; if ((crtc.s.EXTPALMODE & 0x80) && ((crtc.s.EXTGRPHPAL & 0x88) == 0x88)) { - if (pal_bank & PAL_4096) { // use 4096palettes - switch(pal_bank & (PAL_4096FULL | PAL_4096BANK)) { - case 0: - num = ((port & 0xcc) << 4) | - ((crtc.s.lastpal & 0xc0) >> 4); - break; - - case 1: - num = ((port & 0xcc) << 2) | - ((crtc.s.lastpal & 0xc0) >> 6); - break; - - default: - num = ((port & 0xff) << 4) | (crtc.s.lastpal >> 4); - break; + if (crtc.e.pal_bank & PAL_4096) { // use 4096palettes + num = ((port & 0xff) << 4) + (crtc.s.lastpal >> 4); + if (!(crtc.e.pal_bank & PAL_4096FULL)) { + num &= 0xccc; + if (crtc.e.pal_bank & PAL_4096BANK) { + num >>= 2; + } } pal = crtc.p.grph4096[num]; } else { num = ((port & 0x80) >> 5) | ((port & 0x08) >> 2) | ((crtc.s.lastpal & 0x80) >> 7); - if ((dispmode & SCRN64_MASK) == SCRN64_INVALID) { + if ((crtc.e.dispmode & SCRN64_MASK) == SCRN64_INVALID) { num |= (num << 3); } else { num += ((port & 0x40) >> 1) | ((port & 0x04) << 2) | ((crtc.s.lastpal & 0x40) >> 3); } - pal = crtc.p.grph[pal_bank][num]; + pal = crtc.p.grph[crtc.e.pal_bank][num]; } sft = (port >> (8 - 2)) & (3 << 2); return((REG8)(crtc.s.lastpal + ((pal >> sft) & 0xf))); @@ -435,7 +341,7 @@ REG8 IOINPCALL palette_i(UINT port) { void IOOUTCALL extpal_o(UINT port, REG8 value) { crtc.s.EXTPALMODE = value; - vrambank_patch(); + crtc_bankupdate(); (void)port; } @@ -481,7 +387,7 @@ REG8 IOINPCALL exttextpal_i(UINT port) { void IOOUTCALL exttextdisp_o(UINT port, REG8 value) { crtc.s.ZPRY = value; - vrambank_patch(); + crtc_bankupdate(); (void)port; } @@ -529,23 +435,28 @@ void crtc_initialize(void) { void crtc_reset(void) { - crtc.s = crtcdefault; - - dispmode = SCRN64_INVALID; - pal_bank = pal_disp = PAL_NORMAL; + ZeroMemory(&crtc, sizeof(crtc)); + CopyMemory(crtc.s.rgbp, defrgbp, 4); + CopyMemory(crtc.s.reg, defreg, 18); if (pccore.ROM_TYPE < 3) { resetpal(); } if ((pccore.ROM_TYPE >= 2) && (!(pccore.DIP_SW & 1))) { crtc.s.SCRN_BITS = SCRN_200LINE; - crtc.s.FNT_YL = 16; + crtc.s.reg[CRTCREG_CHRCY] = 15; } pal_reset(); - crtc_updt(); - - vrambank_patch(); + crtc_bankupdate(); + crtc_regupdate(); makescrn.palandply = 1; scrnallflash = 1; } +void crtc_forcesetwidth(REG8 width) { + + crtc.s.reg[CRTCREG_HDISP] = (UINT8)width; + crtc_bankupdate(); + scrnallflash = 1; +} +