6f8401c72c
standard graphics modes. In the absence of better information or a board to test with, I am currently assuming the table I used as reference was incorrect. Changing timings to allow for correct refresh rate.
552 lines
20 KiB
C
552 lines
20 KiB
C
/*ATI 28800 emulation (VGA Charger & Korean VGA)*/
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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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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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uint8_t port_03dd_val;
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uint16_t get_korean_font_kind;
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int in_get_korean_font_kind_set;
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int get_korean_font_enabled;
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int get_korean_font_index;
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uint16_t get_korean_font_base;
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int ksc5601_mode_enabled;
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} ati28800_t;
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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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// pclog("ati28800_out : %04X %02X %04X:%04X\n", addr, val, CS,pc);
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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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old = ati28800->regs[ati28800->index];
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ati28800->regs[ati28800->index] = val;
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switch (ati28800->index)
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{
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case 0xb2:
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case 0xbe:
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if (ati28800->regs[0xbe] & 8) /*Read/write bank mode*/
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{
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svga->read_bank = ((ati28800->regs[0xb2] >> 5) & 7) * 0x10000;
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svga->write_bank = ((ati28800->regs[0xb2] >> 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[0xb2] >> 1) & 7) * 0x10000;
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if (ati28800->index == 0xbe && ((old ^ val) & 0x10))
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svga_recalctimings(svga);
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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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case 0xb6:
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if ((old ^ val) & 0x10)
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svga_recalctimings(svga);
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break;
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case 0xb8:
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if ((old ^ val) & 0x40)
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svga_recalctimings(svga);
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break;
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case 0xb9:
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if ((old ^ val) & 2)
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svga_recalctimings(svga);
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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 < 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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svga_recalctimings(svga);
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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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void ati28800k_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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uint16_t oldaddr = addr;
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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 0x1CF:
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if (ati28800->index == 0xBF && ((ati28800->regs[0xBF] ^ val) & 0x20))
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{
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ati28800->ksc5601_mode_enabled = val & 0x20;
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// pclog("Switching mode to %s at %04X:%04X\n", ksc5601_mode_enabled ? "DBCS" : "SBCS", CS, cpu_state.oldpc);
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svga_recalctimings(svga);
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}
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ati28800_out(oldaddr, val, p);
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break;
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case 0x3DD:
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// pclog("ati28800k_out : set port 03DD to %02X at %04X:%04X\n", val, CS, cpu_state.oldpc);
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ati28800->port_03dd_val = val;
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if (val == 1)
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ati28800->get_korean_font_enabled = 0;
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if (ati28800->in_get_korean_font_kind_set)
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{
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ati28800->get_korean_font_kind = (val << 8) | (ati28800->get_korean_font_kind & 0xFF);
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ati28800->get_korean_font_enabled = 1;
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ati28800->get_korean_font_index = 0;
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ati28800->in_get_korean_font_kind_set = 0;
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}
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break;
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case 0x3DE:
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// pclog("ati28800k_out : set port 03DE to %02X at %04X:%04X\n", val, CS, cpu_state.oldpc);
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ati28800->in_get_korean_font_kind_set = 0;
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if(ati28800->get_korean_font_enabled)
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{
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if((ati28800->get_korean_font_base & 0x7F) > 0x20 && (ati28800->get_korean_font_base & 0x7F) < 0x7F)
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fontdatksc5601_user[(ati28800->get_korean_font_kind & 4) * 24 + (ati28800->get_korean_font_base & 0x7F) - 0x20][ati28800->get_korean_font_index] = val;
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ati28800->get_korean_font_index++;
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ati28800->get_korean_font_index &= 0x1F;
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}
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else
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{
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switch (ati28800->port_03dd_val)
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{
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case 0x10:
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ati28800->get_korean_font_base = ((val & 0x7F) << 7) | (ati28800->get_korean_font_base & 0x7F);
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break;
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case 8:
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ati28800->get_korean_font_base = (ati28800->get_korean_font_base & 0x3F80) | (val & 0x7F);
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break;
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case 1:
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ati28800->get_korean_font_kind = (ati28800->get_korean_font_kind & 0xFF00) | val;
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if (val & 2)
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ati28800->in_get_korean_font_kind_set = 1;
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break;
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default:
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break;
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}
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}
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break;
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default:
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ati28800_out(oldaddr, val, p);
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break;
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}
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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 != 0x3da) pclog("ati28800_in : %04X ", addr);
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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)
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{
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case 0xb7:
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temp = ati28800->regs[ati28800->index] & ~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];
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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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// if (addr != 0x3da) pclog("%02X %04X:%04X\n", temp, CS,cpu_state.pc);
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return temp;
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}
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uint8_t ati28800k_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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uint16_t oldaddr = addr;
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uint8_t temp = 0xFF;
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// if (addr != 0x3da) pclog("ati28800_in : %04X ", addr);
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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 0x3DE:
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if (ati28800->get_korean_font_enabled)
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{
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switch (ati28800->get_korean_font_kind >> 8)
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{
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case 4: /* ROM font */
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temp = fontdatksc5601[ati28800->get_korean_font_base][ati28800->get_korean_font_index++];
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break;
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case 2: /* User defined font */
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if((ati28800->get_korean_font_base & 0x7F) > 0x20 && (ati28800->get_korean_font_base & 0x7F) < 0x7F)
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temp = fontdatksc5601_user[(ati28800->get_korean_font_kind & 4) * 24 + (ati28800->get_korean_font_base & 0x7F) - 0x20][ati28800->get_korean_font_index];
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else
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temp = 0xFF;
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ati28800->get_korean_font_index++;
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break;
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default:
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break;
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}
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ati28800->get_korean_font_index &= 0x1F;
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}
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break;
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default:
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temp = ati28800_in(oldaddr, p);
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break;
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}
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// if (addr != 0x3da) pclog("%02X %04X:%04X\n", temp, CS,cpu_state.pc);
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return temp;
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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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//pclog("ati28800_recalctimings\n");
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switch (((ati28800->regs[0xbe] & 0x10) >> 1) | ((ati28800->regs[0xb9] & 2) << 1) | ((svga->miscout & 0x0C) >> 2))
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{
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case 0x00: svga->clock = (cpuclock * (double)(1ull << 32)) / 42954000.0; break;
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case 0x01: svga->clock = (cpuclock * (double)(1ull << 32)) / 48771000.0; break;
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case 0x03: svga->clock = (cpuclock * (double)(1ull << 32)) / 36000000.0; break;
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case 0x04: svga->clock = (cpuclock * (double)(1ull << 32)) / 50350000.0; break;
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case 0x05: svga->clock = (cpuclock * (double)(1ull << 32)) / 56640000.0; break;
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case 0x07: svga->clock = (cpuclock * (double)(1ull << 32)) / 44900000.0; break;
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case 0x08: svga->clock = (cpuclock * (double)(1ull << 32)) / 30240000.0; break;
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case 0x09: svga->clock = (cpuclock * (double)(1ull << 32)) / 32000000.0; break;
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case 0x0A: svga->clock = (cpuclock * (double)(1ull << 32)) / 37500000.0; break;
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case 0x0B: svga->clock = (cpuclock * (double)(1ull << 32)) / 39000000.0; break;
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case 0x0C: svga->clock = (cpuclock * (double)(1ull << 32)) / 50350000.0; break;
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case 0x0D: svga->clock = (cpuclock * (double)(1ull << 32)) / 56644000.0; break;
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case 0x0E: svga->clock = (cpuclock * (double)(1ull << 32)) / 75000000.0; break;
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case 0x0F: svga->clock = (cpuclock * (double)(1ull << 32)) / 65000000.0; break;
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default: break;
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}
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if (ati28800->regs[0xb8] & 0x40)
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svga->clock *= 2;
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if (ati28800->regs[0xb6] & 0x10)
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{
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svga->hdisp <<= 1;
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svga->htotal <<= 1;
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svga->rowoffset <<= 1;
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}
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if (!svga->scrblank && (ati28800->regs[0xb0] & 0x20)) /*Extended 256 colour modes*/
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{
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//pclog("8bpp_highres\n");
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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 ati28800k_recalctimings(svga_t *svga)
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{
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ati28800_t *ati28800 = (ati28800_t *)svga->p;
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ati28800_recalctimings(svga);
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if (svga->render == svga_render_text_80 && ati28800->ksc5601_mode_enabled)
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{
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svga->render = svga_render_text_80_ksc5601;
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}
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}
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void *ati28800_init()
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{
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ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
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memset(ati28800, 0, sizeof(ati28800_t));
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rom_init(&ati28800->bios_rom, "bios.bin", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
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svga_init(&ati28800->svga, ati28800, 1 << 19, /*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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void *ati28800k_init()
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{
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ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
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memset(ati28800, 0, sizeof(ati28800_t));
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ati28800->port_03dd_val = 0;
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ati28800->get_korean_font_base = 0;
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ati28800->get_korean_font_index = 0;
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ati28800->get_korean_font_enabled = 0;
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ati28800->get_korean_font_kind = 0;
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ati28800->in_get_korean_font_kind_set = 0;
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ati28800->ksc5601_mode_enabled = 0;
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rom_init(&ati28800->bios_rom, "atikorvga.bin", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
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loadfont("ati_ksc5601.rom", FONT_KSC5601);
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svga_init(&ati28800->svga, ati28800, 1 << 19, /*512kb*/
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ati28800k_recalctimings,
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ati28800k_in, ati28800k_out,
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NULL,
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NULL);
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io_sethandler(0x01ce, 0x0002, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
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io_sethandler(0x03c0, 0x0020, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
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ati28800->svga.miscout = 1;
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ati28800->svga.ksc5601_sbyte_mask = 0;
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ati28800->svga.ksc5601_udc_area_msb[0] = 0xC9;
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ati28800->svga.ksc5601_udc_area_msb[1] = 0xFE;
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ati28800->svga.ksc5601_swap_mode = 0;
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ati28800->svga.ksc5601_english_font_type = 0;
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ati_eeprom_load(&ati28800->eeprom, "atikorvga.nvr", 0);
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return ati28800;
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}
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void *ati28800k_spc4620p_init()
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{
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ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
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memset(ati28800, 0, sizeof(ati28800_t));
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ati28800->port_03dd_val = 0;
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ati28800->get_korean_font_base = 0;
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ati28800->get_korean_font_index = 0;
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ati28800->get_korean_font_enabled = 0;
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ati28800->get_korean_font_kind = 0;
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ati28800->in_get_korean_font_kind_set = 0;
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ati28800->ksc5601_mode_enabled = 0;
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rom_init_interleaved(&ati28800->bios_rom, "spc4620p/31005h.u8", "spc4620p/31005h.u10", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
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loadfont("spc4620p/svb6120a_font.rom", 6);
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svga_init(&ati28800->svga, ati28800, 1 << 19, /*512kb*/
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ati28800k_recalctimings,
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ati28800k_in, ati28800k_out,
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NULL,
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NULL);
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io_sethandler(0x01ce, 0x0002, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
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io_sethandler(0x03c0, 0x0020, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
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ati28800->svga.miscout = 1;
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ati28800->svga.ksc5601_sbyte_mask = 0;
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ati28800->svga.ksc5601_udc_area_msb[0] = 0xC9;
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ati28800->svga.ksc5601_udc_area_msb[1] = 0xFE;
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ati28800->svga.ksc5601_swap_mode = 0;
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ati28800->svga.ksc5601_english_font_type = 0;
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ati_eeprom_load(&ati28800->eeprom, "svb6120a.nvr", 0);
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return ati28800;
|
|
}
|
|
|
|
void *ati28800k_spc6033p_init()
|
|
{
|
|
ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
|
|
memset(ati28800, 0, sizeof(ati28800_t));
|
|
|
|
ati28800->port_03dd_val = 0;
|
|
ati28800->get_korean_font_base = 0;
|
|
ati28800->get_korean_font_index = 0;
|
|
ati28800->get_korean_font_enabled = 0;
|
|
ati28800->get_korean_font_kind = 0;
|
|
ati28800->in_get_korean_font_kind_set = 0;
|
|
ati28800->ksc5601_mode_enabled = 0;
|
|
|
|
rom_init(&ati28800->bios_rom, "spc6033p/phoenix.bin", 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
|
|
loadfont("spc6033p/svb6120a_font.rom", 6);
|
|
|
|
svga_init(&ati28800->svga, ati28800, 1 << 19, /*512kb*/
|
|
ati28800k_recalctimings,
|
|
ati28800k_in, ati28800k_out,
|
|
NULL,
|
|
NULL);
|
|
|
|
io_sethandler(0x01ce, 0x0002, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
|
|
io_sethandler(0x03c0, 0x0020, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
|
|
|
|
ati28800->svga.miscout = 1;
|
|
ati28800->svga.ksc5601_sbyte_mask = 0;
|
|
ati28800->svga.ksc5601_udc_area_msb[0] = 0xC9;
|
|
ati28800->svga.ksc5601_udc_area_msb[1] = 0xFE;
|
|
ati28800->svga.ksc5601_swap_mode = 0;
|
|
ati28800->svga.ksc5601_english_font_type = 0;
|
|
|
|
ati_eeprom_load(&ati28800->eeprom, "svb6120a_spc6033p.nvr", 0);
|
|
|
|
return ati28800;
|
|
}
|
|
|
|
static int ati28800_available()
|
|
{
|
|
return rom_present("bios.bin");
|
|
}
|
|
|
|
static int ati28800k_available()
|
|
{
|
|
return rom_present("atikorvga.bin") && rom_present("ati_ksc5601.rom");
|
|
}
|
|
|
|
void ati28800_close(void *p)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)p;
|
|
|
|
svga_close(&ati28800->svga);
|
|
|
|
free(ati28800);
|
|
}
|
|
|
|
void ati28800_speed_changed(void *p)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)p;
|
|
|
|
svga_recalctimings(&ati28800->svga);
|
|
}
|
|
|
|
void ati28800_force_redraw(void *p)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)p;
|
|
|
|
ati28800->svga.fullchange = changeframecount;
|
|
}
|
|
|
|
void ati28800_add_status_info(char *s, int max_len, void *p)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)p;
|
|
|
|
svga_add_status_info(s, max_len, &ati28800->svga);
|
|
}
|
|
|
|
void ati28800k_add_status_info(char *s, int max_len, void *p)
|
|
{
|
|
ati28800_t *ati28800 = (ati28800_t *)p;
|
|
char temps[128];
|
|
|
|
ati28800_add_status_info(s, max_len, p);
|
|
|
|
sprintf(temps, "Korean SVGA mode enabled : %s\n\n", ati28800->ksc5601_mode_enabled ? "Yes" : "No");
|
|
strncat(s, temps, max_len);
|
|
}
|
|
|
|
device_t ati28800_device =
|
|
{
|
|
"ATI-28800",
|
|
0,
|
|
ati28800_init,
|
|
ati28800_close,
|
|
ati28800_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800_add_status_info
|
|
};
|
|
|
|
device_t ati28800k_device =
|
|
{
|
|
"ATI Korean VGA",
|
|
0,
|
|
ati28800k_init,
|
|
ati28800_close,
|
|
ati28800k_available,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800k_add_status_info
|
|
};
|
|
|
|
device_t ati28800k_spc4620p_device =
|
|
{
|
|
"SVB-6120A",
|
|
0,
|
|
ati28800k_spc4620p_init,
|
|
ati28800_close,
|
|
NULL,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800k_add_status_info
|
|
};
|
|
|
|
device_t ati28800k_spc6033p_device =
|
|
{
|
|
"SVB-6120A",
|
|
0,
|
|
ati28800k_spc6033p_init,
|
|
ati28800_close,
|
|
NULL,
|
|
ati28800_speed_changed,
|
|
ati28800_force_redraw,
|
|
ati28800k_add_status_info
|
|
};
|