f6ef1f833c
Thoroughly clean up the code to vastly reduce the number of compiler warnings and found and fixed several bugs in the process; Applied all mainline PCem commits; Added SCSI hard disk emulation; Commented out all unfinished machines and graphics cards; Added the AOpen AP53 and ASUS P/I-P55T2 machines as well as another Tyan 440FX machine, all three with AMI WinBIOS (patch from TheCollector1995); Added the Diamond Stealth 3D 3000 (S3 ViRGE/VX) graphics card (patch from TheCollector1995); Added the PS/2 XT IDE (AccuLogic) HDD Controller (patch from TheCollector1995); Added Microsoft/Logitech Bus Mouse emulation (patch from waltje); Overhauled the makefiles (patch from waltje); Added the Adaptec AHA-1542CF SCSI controller (patch from waltje); Added preliminary (but still unfinished) Adaptec AHA-154x SCSI controller BIOS support (patch from waltje); Added an ISABugger debugging device (patch from waltje); Added sanity checks to the Direct3D code.
522 lines
18 KiB
C
522 lines
18 KiB
C
/* Copyright holders: Sarah Walker, Tenshi
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see COPYING for more details
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*/
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/*ATI 28800 emulation (VGA Charger)*/
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#include <stdlib.h>
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#include "ibm.h"
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#include "device.h"
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#include "io.h"
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#include "mem.h"
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#include "rom.h"
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#include "video.h"
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#include "vid_ati28800.h"
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#include "vid_ati_eeprom.h"
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#include "vid_svga.h"
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#include "vid_svga_render.h"
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#include "timer.h"
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typedef struct ati28800_t
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{
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svga_t svga;
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ati_eeprom_t eeprom;
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rom_t bios_rom;
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uint8_t regs[256];
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int index;
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} ati28800_t;
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void ati28800_svga_recalctimings(ati28800_t *ati28800);
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void ati28800_out(uint16_t addr, uint8_t val, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_t *svga = &ati28800->svga;
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uint8_t old;
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if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1))
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addr ^= 0x60;
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switch (addr)
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{
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case 0x1ce:
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ati28800->index = val;
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break;
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case 0x1cf:
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ati28800->regs[ati28800->index & 0x3f] = val;
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pclog("ATI 28800 ATI register write %02x %02x\n", ati28800->index, val);
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switch (ati28800->index & 0x3f)
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{
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case 0x2d:
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if ((gfxcard == GFX_VGAWONDERXL24) && (val & 8))
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{
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svga->charseta = (svga->charseta & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
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svga->charsetb = (svga->charsetb & 0x3ffff) | ((((uint32_t) val) >> 4) << 18);
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}
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break;
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case 0x32:
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case 0x3e:
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if (ati28800->regs[0x3e] & 8) /*Read/write bank mode*/
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{
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svga->read_bank = ((ati28800->regs[0x32] >> 5) & 7) * 0x10000;
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svga->write_bank = ((ati28800->regs[0x32] >> 1) & 7) * 0x10000;
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}
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else /*Single bank mode*/
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svga->read_bank = svga->write_bank = ((ati28800->regs[0x32] >> 1) & 7) * 0x10000;
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break;
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case 0xb3:
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ati_eeprom_write(&ati28800->eeprom, val & 8, val & 2, val & 1);
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break;
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}
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break;
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case 0x3D4:
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svga->crtcreg = val & 0x3f;
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return;
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case 0x3D5:
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if (svga->crtcreg <= 0x18)
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val &= mask_crtc[svga->crtcreg];
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if ((svga->crtcreg < 7) && (svga->crtc[0x11] & 0x80))
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return;
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if ((svga->crtcreg == 7) && (svga->crtc[0x11] & 0x80))
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val = (svga->crtc[7] & ~0x10) | (val & 0x10);
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old = svga->crtc[svga->crtcreg];
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svga->crtc[svga->crtcreg] = val;
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if (old != val)
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{
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if (svga->crtcreg < 0xe || svga->crtcreg > 0x10)
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{
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svga->fullchange = changeframecount;
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ati28800_svga_recalctimings(ati28800);
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}
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}
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break;
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}
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svga_out(addr, val, svga);
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}
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uint8_t ati28800_in(uint16_t addr, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_t *svga = &ati28800->svga;
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uint8_t temp;
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if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1)) addr ^= 0x60;
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switch (addr)
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{
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case 0x1ce:
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temp = ati28800->index;
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break;
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case 0x1cf:
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switch (ati28800->index & 0x3f)
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{
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case 0x2a:
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temp = (gfxcard == GFX_VGAWONDERXL24) ? 6 : 5;
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break;
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case 0x37:
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temp = ati28800->regs[ati28800->index & 0x3f] & ~8;
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if (ati_eeprom_read(&ati28800->eeprom))
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temp |= 8;
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break;
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default:
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temp = ati28800->regs[ati28800->index & 0x3f];
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break;
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}
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break;
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case 0x3c2:
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if ((svga->vgapal[0].r + svga->vgapal[0].g + svga->vgapal[0].b) >= 0x50)
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temp = 0;
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else
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temp = 0x10;
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break;
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case 0x3D4:
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temp = svga->crtcreg;
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break;
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case 0x3D5:
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temp = svga->crtc[svga->crtcreg];
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break;
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default:
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temp = svga_in(addr, svga);
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break;
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}
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#ifndef RELEASE_BUILD
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if (addr != 0x3da) pclog("%02X %04X:%04X\n", temp, CS,cpu_state.pc);
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#endif
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return temp;
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}
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void ati28800_svga_recalctimings(ati28800_t *ati28800)
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{
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double crtcconst;
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double _dispontime, _dispofftime, disptime;
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svga_t *svga = &ati28800->svga;
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svga->vtotal = svga->crtc[6];
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svga->dispend = svga->crtc[0x12];
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svga->vsyncstart = svga->crtc[0x10];
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svga->split = svga->crtc[0x18];
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svga->vblankstart = svga->crtc[0x15];
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if (svga->crtc[7] & 1) svga->vtotal |= 0x100;
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if (svga->crtc[7] & 32) svga->vtotal |= 0x200;
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svga->vtotal += 2;
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if (svga->crtc[7] & 2) svga->dispend |= 0x100;
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if (svga->crtc[7] & 64) svga->dispend |= 0x200;
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svga->dispend++;
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if (svga->crtc[7] & 4) svga->vsyncstart |= 0x100;
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if (svga->crtc[7] & 128) svga->vsyncstart |= 0x200;
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svga->vsyncstart++;
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if (svga->crtc[7] & 0x10) svga->split|=0x100;
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if (svga->crtc[9] & 0x40) svga->split|=0x200;
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svga->split++;
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if (svga->crtc[7] & 0x08) svga->vblankstart |= 0x100;
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if (svga->crtc[9] & 0x20) svga->vblankstart |= 0x200;
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svga->vblankstart++;
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svga->hdisp = svga->crtc[1];
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svga->hdisp++;
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svga->htotal = svga->crtc[0];
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if ((ati28800->regs[0x2d] & 8) && (gfxcard == GFX_VGAWONDERXL24)) svga->htotal |= (ati28800->regs[0x2d] & 1) ? 0x100 : 0;
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svga->htotal += 6; /*+6 is required for Tyrian*/
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svga->rowoffset = svga->crtc[0x13];
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svga->clock = (svga->vidclock) ? VGACONST2 : VGACONST1;
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svga->lowres = svga->attrregs[0x10] & 0x40;
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svga->interlace = 0;
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svga->ma_latch = (svga->crtc[0xc] << 8) | svga->crtc[0xd];
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svga->hdisp_time = svga->hdisp;
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svga->render = svga_render_blank;
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if (!svga->scrblank && svga->attr_palette_enable)
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{
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if (!(svga->gdcreg[6] & 1)) /*Text mode*/
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{
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if (svga->seqregs[1] & 8) /*40 column*/
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{
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svga->render = svga_render_text_40;
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svga->hdisp *= (svga->seqregs[1] & 1) ? 16 : 18;
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}
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else
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{
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svga->render = svga_render_text_80;
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svga->hdisp *= (svga->seqregs[1] & 1) ? 8 : 9;
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}
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svga->hdisp_old = svga->hdisp;
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}
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else
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{
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svga->hdisp *= (svga->seqregs[1] & 8) ? 16 : 8;
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svga->hdisp_old = svga->hdisp;
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switch (svga->gdcreg[5] & 0x60)
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{
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case 0x00: /*16 colours*/
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if (svga->seqregs[1] & 8) /*Low res (320)*/
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svga->render = svga_render_4bpp_lowres;
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else
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svga->render = svga_render_4bpp_highres;
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break;
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case 0x20: /*4 colours*/
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if (svga->seqregs[1] & 8) /*Low res (320)*/
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svga->render = svga_render_2bpp_lowres;
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else
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svga->render = svga_render_2bpp_highres;
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break;
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case 0x40: case 0x60: /*256+ colours*/
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switch (svga->bpp)
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{
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case 8:
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if (svga->lowres)
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svga->render = svga_render_8bpp_lowres;
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else
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svga->render = svga_render_8bpp_highres;
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break;
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case 15:
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if (svga->lowres)
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svga->render = svga_render_15bpp_lowres;
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else
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svga->render = svga_render_15bpp_highres;
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break;
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case 16:
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if (svga->lowres)
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svga->render = svga_render_16bpp_lowres;
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else
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svga->render = svga_render_16bpp_highres;
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break;
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case 24:
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if (svga->lowres)
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svga->render = svga_render_24bpp_lowres;
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else
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svga->render = svga_render_24bpp_highres;
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break;
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case 32:
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if (svga->lowres)
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svga->render = svga_render_32bpp_lowres;
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else
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svga->render = svga_render_32bpp_highres;
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break;
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}
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break;
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}
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}
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}
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svga->linedbl = svga->crtc[9] & 0x80;
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svga->rowcount = svga->crtc[9] & 31;
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if (svga->recalctimings_ex)
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svga->recalctimings_ex(svga);
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if (svga->vblankstart < svga->dispend)
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svga->dispend = svga->vblankstart;
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crtcconst = (svga->seqregs[1] & 1) ? (svga->clock * 8.0) : (svga->clock * 9.0);
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disptime = svga->htotal;
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_dispontime = svga->hdisp_time;
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if (svga->seqregs[1] & 8) { disptime *= 2; _dispontime *= 2; }
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_dispofftime = disptime - _dispontime;
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_dispontime *= crtcconst;
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_dispofftime *= crtcconst;
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svga->dispontime = (int)(_dispontime * (1 << TIMER_SHIFT));
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svga->dispofftime = (int)(_dispofftime * (1 << TIMER_SHIFT));
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/* printf("SVGA horiz total %i display end %i vidclock %f\n",svga->crtc[0],svga->crtc[1],svga->clock);
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printf("SVGA vert total %i display end %i max row %i vsync %i\n",svga->vtotal,svga->dispend,(svga->crtc[9]&31)+1,svga->vsyncstart);
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printf("total %f on %i cycles off %i cycles frame %i sec %i %02X\n",disptime*crtcconst,svga->dispontime,svga->dispofftime,(svga->dispontime+svga->dispofftime)*svga->vtotal,(svga->dispontime+svga->dispofftime)*svga->vtotal*70,svga->seqregs[1]);
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pclog("svga->render %08X\n", svga->render);*/
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}
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void ati28800_recalctimings(svga_t *svga)
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{
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ati28800_t *ati28800 = (ati28800_t *)svga->p;
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uint8_t clock_sel = (svga->miscout >> 2) & 3;
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double freq;
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#ifndef RELEASE_BUILD
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pclog("ati28800_recalctimings\n");
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#endif
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svga->interlace = (!svga->scrblank && (ati28800->regs[0x3e] & 2));
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clock_sel |= (ati28800->regs[0x39] & 2) << 2;
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clock_sel |= (ati28800->regs[0x3e] & 0x10) >> 1;
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switch(clock_sel)
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{
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case 0x00: freq = 42954000; break;
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case 0x01: freq = 48771000; break;
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case 0x02: freq = 16657000; break;
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case 0x03: freq = 36000000; break;
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case 0x04: freq = 50350000; break;
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case 0x05: freq = 56640000; break;
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case 0x06: freq = 28322000; break;
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case 0x07: freq = 44900000; break;
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case 0x08: freq = 30240000; break;
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case 0x09: freq = 32000000; break;
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case 0x0a: freq = 37500000; break;
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case 0x0b: freq = 39000000; break;
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case 0x0c: freq = 40000000; break;
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case 0x0d: freq = 56644000; break;
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case 0x0e: freq = 75000000; break;
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case 0x0f: freq = 65000000; break;
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}
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svga->clock = cpuclock / freq;
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if (!svga->scrblank && (ati28800->regs[0x30] & 0x20)) /*Extended 256 colour modes*/
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{
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#ifndef RELEASE_BUILD
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pclog("8bpp_highres\n");
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#endif
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svga->bpp = 8;
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svga->render = svga_render_8bpp_highres;
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svga->rowoffset <<= 1;
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svga->ma <<= 1;
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}
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}
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void *ati28800_init()
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{
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uint32_t memory = 512;
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ati28800_t *ati28800;
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/* if (gfxcard == GFX_VGAWONDERXL) */ memory = device_get_config_int("memory");
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memory <<= 10;
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ati28800 = malloc(sizeof(ati28800_t));
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memset(ati28800, 0, sizeof(ati28800_t));
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if (gfxcard == GFX_VGAWONDERXL)
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{
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rom_init_interleaved(&ati28800->bios_rom,
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"roms/XLEVEN.BIN",
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"roms/XLODD.BIN",
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0xc0000, 0x10000, 0xffff, 0, MEM_MAPPING_EXTERNAL);
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}
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else if (gfxcard == GFX_VGAWONDERXL24)
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{
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rom_init_interleaved(&ati28800->bios_rom,
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"roms/112-14318-102.bin",
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"roms/112-14319-102.bin",
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0xc0000, 0x10000, 0xffff, 0, MEM_MAPPING_EXTERNAL);
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}
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else
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rom_init(&ati28800->bios_rom, "roms/bios.bin", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
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svga_init(&ati28800->svga, ati28800, memory, /*512kb*/
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ati28800_recalctimings,
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ati28800_in, ati28800_out,
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NULL,
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NULL);
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io_sethandler(0x01ce, 0x0002, ati28800_in, NULL, NULL, ati28800_out, NULL, NULL, ati28800);
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io_sethandler(0x03c0, 0x0020, ati28800_in, NULL, NULL, ati28800_out, NULL, NULL, ati28800);
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ati28800->svga.miscout = 1;
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ati_eeprom_load(&ati28800->eeprom, "ati28800.nvr", 0);
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return ati28800;
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}
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static int ati28800_available()
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{
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return rom_present("roms/bios.bin");
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}
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static int compaq_ati28800_available()
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{
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return (rom_present("roms/XLEVEN.bin") && rom_present("roms/XLODD.bin"));
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}
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static int ati28800_wonderxl24_available()
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{
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return (rom_present("roms/112-14318-102.bin") && rom_present("roms/112-14319-102.bin"));
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}
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void ati28800_close(void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_close(&ati28800->svga);
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free(ati28800);
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}
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void ati28800_speed_changed(void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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ati28800_svga_recalctimings(ati28800);
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}
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void ati28800_force_redraw(void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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ati28800->svga.fullchange = changeframecount;
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}
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void ati28800_add_status_info(char *s, int max_len, void *p)
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{
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ati28800_t *ati28800 = (ati28800_t *)p;
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svga_add_status_info(s, max_len, &ati28800->svga);
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}
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static device_config_t ati28800_config[] =
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{
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{
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"memory", "Memory size", CONFIG_SELECTION, "", 512,
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{
|
|
{
|
|
"256 kB", 256
|
|
},
|
|
{
|
|
"512 kB", 512
|
|
},
|
|
{
|
|
""
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"", "", -1
|
|
}
|
|
};
|
|
|
|
static device_config_t ati28800_wonderxl_config[] =
|
|
{
|
|
{
|
|
"memory", "Memory size", CONFIG_SELECTION, "", 512,
|
|
{
|
|
{
|
|
"256 kB", 256
|
|
},
|
|
{
|
|
"512 kB", 512
|
|
},
|
|
{
|
|
"1 MB", 1024
|
|
},
|
|
{
|
|
""
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"", "", -1
|
|
}
|
|
};
|
|
|
|
device_t ati28800_device =
|
|
{
|
|
"ATI-28800",
|
|
0,
|
|
ati28800_init,
|
|
ati28800_close,
|
|
ati28800_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_add_status_info,
|
|
ati28800_config
|
|
};
|
|
|
|
device_t compaq_ati28800_device =
|
|
{
|
|
"Compaq ATI-28800",
|
|
0,
|
|
ati28800_init,
|
|
ati28800_close,
|
|
compaq_ati28800_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_add_status_info,
|
|
ati28800_config
|
|
};
|
|
|
|
device_t ati28800_wonderxl24_device =
|
|
{
|
|
"ATI-28800 (VGA Wonder XL24)",
|
|
0,
|
|
ati28800_init,
|
|
ati28800_close,
|
|
ati28800_wonderxl24_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_add_status_info,
|
|
ati28800_wonderxl_config
|
|
};
|