| version 1.53, 2004/03/04 17:36:05 | version 1.62, 2004/03/31 19:23:37 | 
| Line 8 | Line 8 | 
 | #include        "biosmem.h" | #include        "biosmem.h" | 
 | #include        "sxsibios.h" | #include        "sxsibios.h" | 
 | #include        "lio.h" | #include        "lio.h" | 
 |  | #include        "vram.h" | 
 | #include        "fddfile.h" | #include        "fddfile.h" | 
 | #include        "fdd_mtr.h" | #include        "fdd_mtr.h" | 
 | #include        "fdfmt.h" | #include        "fdfmt.h" | 
 | #include        "keytable.res" | #include        "keytable.res" | 
 | #include        "itfrom.res" | #include        "itfrom.res" | 
 | #include        "startup.res" | #include        "startup.res" | 
| #include        "biosboot.res" | #include        "biosfd80.res" | 
 |  |  | 
 |  |  | 
 | #define BIOS_SIMULATE | #define BIOS_SIMULATE | 
| Line 23 | Line 24 | 
 |  |  | 
 | static const char neccheck[] = "Copyright (C) 1983 by NEC Corporation"; | static const char neccheck[] = "Copyright (C) 1983 by NEC Corporation"; | 
 |  |  | 
| // 00/05/18 MS-DOS6.2 on PC-9801VX calling proc | typedef struct { | 
| static const BYTE printmain[] = {0x90, 0x5a, 0x1f, 0xcf}; | UINT8   port; | 
|  | UINT8   data; | 
|  | } IODATA; | 
|  |  | 
|  | static const IODATA iodata[] = { | 
|  | // DMA | 
|  | {0x29, 0x00}, {0x29, 0x01}, {0x29, 0x02}, {0x29, 0x03}, | 
|  | {0x27, 0x00}, {0x21, 0x00}, {0x23, 0x00}, {0x25, 0x00}, | 
|  | {0x1b, 0x00}, {0x11, 0x40}, | 
|  |  | 
|  | // PIT | 
|  | {0x77, 0x30}, {0x71, 0x00}, {0x71, 0x00}, | 
|  | {0x77, 0x76}, {0x73, 0xcd}, {0x73, 0x04}, | 
|  | {0x77, 0xb6}, | 
|  |  | 
|  | // PIC | 
|  | {0x00, 0x11}, {0x02, 0x08}, {0x02, 0x80}, {0x02, 0x1d}, | 
|  | {0x08, 0x11}, {0x0a, 0x10}, {0x0a, 0x07}, {0x0a, 0x09}, | 
|  | {0x02, 0x7d}, {0x0a, 0x71}}; | 
|  |  | 
|  | static const UINT8 msw_default[8] = | 
|  | {0x48, 0x05, 0x04, 0x00, 0x01, 0x00, 0x00, 0x6e}; | 
|  |  | 
|  |  | 
|  | static void bios_itfprepare(void) { | 
|  |  | 
|  | const IODATA    *p; | 
|  | const IODATA    *pterm; | 
|  |  | 
|  | crtc_biosreset(); | 
|  | gdc_biosreset(); | 
|  |  | 
|  | p = iodata; | 
|  | pterm = iodata + (sizeof(iodata) / sizeof(IODATA)); | 
|  | while(p < pterm) { | 
|  | iocore_out8(p->port, p->data); | 
|  | p++; | 
|  | } | 
|  | } | 
|  |  | 
|  | static void bios_memclear(void) { | 
 |  |  | 
 |  | ZeroMemory(mem, 0xa0000); | 
 |  | ZeroMemory(mem + 0x100000, 0x10000); | 
 |  | if (CPU_EXTMEM) { | 
 |  | ZeroMemory(CPU_EXTMEM, CPU_EXTMEMSIZE); | 
 |  | } | 
 |  | bios0x18_16(0x20, 0xe1); | 
 |  | ZeroMemory(mem + VRAM0_B, 0x18000); | 
 |  | ZeroMemory(mem + VRAM0_E, 0x08000); | 
 |  | ZeroMemory(mem + VRAM1_B, 0x18000); | 
 |  | ZeroMemory(mem + VRAM1_E, 0x08000); | 
 |  | #if defined(SUPPORT_PC9821) | 
 |  | ZeroMemory(vramex, sizeof(vramex)); | 
 |  | #endif | 
 |  | } | 
 |  |  | 
 | static void bios_reinitbyswitch(void) { | static void bios_reinitbyswitch(void) { | 
 |  |  | 
| Line 34  static void bios_reinitbyswitch(void) { | Line 89  static void bios_reinitbyswitch(void) { | 
 | BYTE    biosflag; | BYTE    biosflag; | 
 | UINT8   boot; | UINT8   boot; | 
 |  |  | 
 | #if defined(CPUCORE_IA32) |  | 
 | UINT16  org_cs; |  | 
 | UINT16  org_ip; |  | 
 |  |  | 
 | org_cs = CPU_CS; |  | 
 | org_ip = CPU_IP; |  | 
 | CPU_SHUT(); |  | 
 | CPU_CS = org_cs; |  | 
 | CPU_IP = org_ip; |  | 
 | SETBIOSMEM16(0x00486, CPU_DX); |  | 
 | #endif |  | 
 |  |  | 
 | if (!(np2cfg.dipsw[2] & 0x80)) { | if (!(np2cfg.dipsw[2] & 0x80)) { | 
 | #if defined(CPUCORE_IA32) | #if defined(CPUCORE_IA32) | 
 | mem[MEMB_SYS_TYPE] = 0x03;              // 80386〜 | mem[MEMB_SYS_TYPE] = 0x03;              // 80386〜 | 
| Line 115  static void bios_reinitbyswitch(void) { | Line 158  static void bios_reinitbyswitch(void) { | 
 | mem[0x45c] = 0x40; | mem[0x45c] = 0x40; | 
 | #endif | #endif | 
 |  |  | 
 |  | // FDC | 
 |  | if (fdc.support144) { | 
 |  | mem[MEMB_F144_SUP] |= fdc.equip; | 
 |  | } | 
 |  |  | 
 | // IDE initialize | // IDE initialize | 
 | if (pccore.hddif & PCHDD_IDE) { | if (pccore.hddif & PCHDD_IDE) { | 
 | mem[MEMB_SYS_TYPE] |= 0x80;             // IDE | mem[MEMB_SYS_TYPE] |= 0x80;             // IDE | 
| Line 123  static void bios_reinitbyswitch(void) { | Line 171  static void bios_reinitbyswitch(void) { | 
 | } | } | 
 | } | } | 
 |  |  | 
 | static void bios_memclear(void) { |  | 
 |  |  | 
 | ZeroMemory(mem, 0xa0000); |  | 
 | ZeroMemory(mem + VRAM1_B, 0x18000); |  | 
 | ZeroMemory(mem + VRAM1_E, 0x08000); |  | 
 | } |  | 
 |  |  | 
 | static void bios_vectorset(void) { | static void bios_vectorset(void) { | 
 |  |  | 
 | UINT    i; | UINT    i; | 
 |  |  | 
 | for (i=0; i<0x400; i+=4) { |  | 
 | SETBIOSMEM16(i+0, BIOSOFST_IRET); |  | 
 | SETBIOSMEM16(i+2, BIOS_SEG); |  | 
 | } |  | 
 | for (i=0; i<0x20; i++) { | for (i=0; i<0x20; i++) { | 
| *(UINT16 *)(mem + (i*4)) = *(UINT16 *)(mem + 0xfd868 + (i*2)); | *(UINT16 *)(mem + (i*4)) = *(UINT16 *)(mem + BIOS_BASE + BIOS_TABLE + (i*2)); | 
|  | SETBIOSMEM16((i * 4) + 2, BIOS_SEG); | 
 | } | } | 
 | SETBIOSMEM32(0x1e*4, 0xe8000000); | SETBIOSMEM32(0x1e*4, 0xe8000000); | 
 | } | } | 
| Line 155  static void bios_screeninit(void) { | Line 193  static void bios_screeninit(void) { | 
 | } | } | 
 |  |  | 
 |  |  | 
 | // CDSで見てる為、変更…(涙 |  | 
 | static const UINT16 biosoffset[0x20] = { |  | 
 | BIOSOFST_IRET,  BIOSOFST_IRET,  BIOSOFST_02,    BIOSOFST_IRET, |  | 
 | BIOSOFST_IRET,  BIOSOFST_IRET,  BIOSOFST_IRET,  BIOSOFST_IRET, |  | 
 |  |  | 
 | BIOSOFST_08,    BIOSOFST_09,    BIOSOFST_EOIM,  BIOSOFST_EOIM, |  | 
 | BIOSOFST_0c,    BIOSOFST_EOIM,  BIOSOFST_EOIM,  BIOSOFST_EOIM, |  | 
 |  |  | 
 | BIOSOFST_EOIS,  BIOSOFST_EOIS,  BIOSOFST_12,    BIOSOFST_13, |  | 
 | BIOSOFST_EOIS,  BIOSOFST_EOIS,  BIOSOFST_EOIS,  BIOSOFST_EOIS, |  | 
 |  |  | 
 | BIOSOFST_18,    BIOSOFST_19,    BIOSOFST_1a,    BIOSOFST_1b, |  | 
 | BIOSOFST_1c,    BIOSOFST_IRET,  BIOSOFST_1e,    BIOSOFST_1f}; |  | 
 |  |  | 
 |  |  | 
 | void bios_initialize(void) { | void bios_initialize(void) { | 
 |  |  | 
 | char    path[MAX_PATH]; | char    path[MAX_PATH]; | 
 | FILEH   fh; | FILEH   fh; | 
 | UINT    i; | UINT    i; | 
 |  | UINT32  tmp; | 
 | UINT    pos; | UINT    pos; | 
 |  |  | 
 | biosrom = FALSE; | biosrom = FALSE; | 
 |  |  | 
 | // まぁDISK BASIC動くようになるからいいんじゃないですか? |  | 
 | // BASIC BIOSは 8086コードのように見えるけど… |  | 
 | getbiospath(path, str_biosrom, sizeof(path)); | getbiospath(path, str_biosrom, sizeof(path)); | 
 | fh = file_open_rb(path); | fh = file_open_rb(path); | 
 | if (fh != FILEH_INVALID) { | if (fh != FILEH_INVALID) { | 
| if (file_read(fh, mem + 0x0e8000, 0x18000) == 0x18000) { | biosrom = (file_read(fh, mem + 0x0e8000, 0x18000) == 0x18000); | 
| TRACEOUT(("load bios.rom")); |  | 
| biosrom = TRUE; |  | 
| } |  | 
 | file_close(fh); | file_close(fh); | 
 | } | } | 
| if (!biosrom) { | if (biosrom) { | 
|  | TRACEOUT(("load bios.rom")); | 
|  | // PnP BIOSを潰す | 
|  | for (i=0; i<0x10000; i+=0x10) { | 
|  | tmp = LOADINTELDWORD(mem + 0xf0000 + i); | 
|  | if (tmp == 0x506e5024) { | 
|  | TRACEOUT(("found PnP BIOS at %.5x", 0xf0000 + i)); | 
|  | STOREINTELDWORD(mem + 0xf0000 + i, 0x32504e24); | 
|  | } | 
|  | } | 
|  | } | 
|  | else { | 
 | CopyMemory(mem + 0x0e8000, nosyscode, sizeof(nosyscode)); | CopyMemory(mem + 0x0e8000, nosyscode, sizeof(nosyscode)); | 
 | } | } | 
 |  |  | 
| #if defined(BIOS_SIMULATE) | #if defined(SUPPORT_PC9821) | 
| // BIOS hookのアドレス変更 | getbiospath(path, "bios9821.rom", sizeof(path)); | 
| for (i=0; i<0x20; i++) { | fh = file_open_rb(path); | 
| STOREINTELWORD(mem + 0xfd868 + i*2, biosoffset[i]); | if (fh != FILEH_INVALID) { | 
| } | if (file_read(fh, mem + 0x0d8000, 0x2000) == 0x2000) { | 
| SETBIOSMEM16(BIOS_BASE + BIOSOFST_IRET, 0x50cf); | // IDE BIOSを潰す | 
| SETBIOSMEM16(BIOS_BASE + BIOSOFST_WAIT, 0xcf90); | TRACEOUT(("load bios9821.rom")); | 
| for (i=(BIOS_BASE+BIOSOFST_EOIM); i<=(BIOS_BASE+BIOSOFST_1f); i+=2) { | STOREINTELWORD(mem + 0x0d8009, 0); | 
| SETBIOSMEM16(i, 0xcf90); | } | 
|  | file_close(fh); | 
 | } | } | 
| CopyMemory(mem + BIOS_BASE + BIOSOFST_PRT, printmain, sizeof(printmain)); | #endif | 
 |  |  | 
| //      bios_vectorset(); | #if defined(BIOS_SIMULATE) | 
|  | CopyMemory(mem + BIOS_BASE, biosfd80, sizeof(biosfd80)); | 
 | if (!biosrom) { | if (!biosrom) { | 
 | lio_initialize(); | lio_initialize(); | 
 | } | } | 
 |  |  | 
 | SETBIOSMEM16(0xfd800, 0xcb90); |  | 
 | SETBIOSMEM16(0xfd802, 0xcb90); |  | 
 | for (i=0; i<8; i+=2) { | for (i=0; i<8; i+=2) { | 
 | STOREINTELWORD(mem + 0xfd800 + 0x1aaf + i, 0x1ab7); | STOREINTELWORD(mem + 0xfd800 + 0x1aaf + i, 0x1ab7); | 
 | STOREINTELWORD(mem + 0xfd800 + 0x1ad7 + i, 0x1adf); | STOREINTELWORD(mem + 0xfd800 + 0x1ad7 + i, 0x1adf); | 
| Line 233  void bios_initialize(void) { | Line 262  void bios_initialize(void) { | 
 | CopyMemory(mem + 0xf538e, itfrom + pos, 0x27); | CopyMemory(mem + 0xf538e, itfrom + pos, 0x27); | 
 | } | } | 
 |  |  | 
| //      bios_reinitbyswitch(); | CopyMemory(mem + 0x0fd800 + 0x0e00, keytable[0], 0x300); | 
| //      mem[MEMB_CRT_STS_FLAG] = 0x84;          // -> bios_screeninit() |  | 
| //      mem[MEMB_BIOS_FLAG0] = 0x03; |  | 
| //      mem[MEMB_F2DD_MODE] = 0xff; |  | 
| //      SETBIOSMEM16(MEMW_DISK_EQUIP, 0x0003); |  | 
| mem[0x005ae] |= 0x03;                                                                                   // ver0.31 |  | 
|  |  | 
| CopyMemory(mem + 0x0fde00, keytable[0], 0x300); |  | 
| //      bios0x09_init(); |  | 
 |  |  | 
 | CopyMemory(mem + ITF_ADRS, itfrom, sizeof(itfrom)); | CopyMemory(mem + ITF_ADRS, itfrom, sizeof(itfrom)); | 
 | mem[ITF_ADRS + 0x7ff0] = 0xea; | mem[ITF_ADRS + 0x7ff0] = 0xea; | 
| Line 252  void bios_initialize(void) { | Line 273  void bios_initialize(void) { | 
 | else if ((pccore.model & PCMODELMASK) == PCMODEL_VM) { | else if ((pccore.model & PCMODELMASK) == PCMODEL_VM) { | 
 | mem[ITF_ADRS + 0x7ff1] = 0x08; | mem[ITF_ADRS + 0x7ff1] = 0x08; | 
 | } | } | 
 |  |  | 
 | CopyMemory(mem + 0xfd800 + 0x2400, biosboot, sizeof(biosboot)); |  | 
 | #else | #else | 
 | fh = file_open_c("itf.rom"); | fh = file_open_c("itf.rom"); | 
 | if (fh != FILEH_INVALID) { | if (fh != FILEH_INVALID) { | 
| Line 267  void bios_initialize(void) { | Line 286  void bios_initialize(void) { | 
 | CopyMemory(mem + 0x1e8000, mem + 0x0e8000, 0x10000); | CopyMemory(mem + 0x1e8000, mem + 0x0e8000, 0x10000); | 
 | } | } | 
 |  |  | 
 | static void bios_boot(void) { |  | 
 |  |  | 
| if (!(sysport.c & 0x80)) { | static void bios_itfcall(void) { | 
| CPU_SP = GETBIOSMEM16(0x00404); |  | 
| CPU_SS = GETBIOSMEM16(0x00406); |  | 
| //              TRACEOUT(("CPU Reset... SS:SP = %.4x:%.4x", CPU_SS, CPU_SP)); |  | 
| } |  | 
| else { |  | 
| //              bios_memclear(); |  | 
| bios_vectorset(); |  | 
| bios0x09_init(); |  | 
| bios_reinitbyswitch(); |  | 
|  |  | 
| if (sysport.c & 0x20) { |  | 
| CPU_CS = 0x0000; |  | 
| CPU_IP = 0x04f8; |  | 
| CPU_DS = 0x0000; |  | 
| CPU_DX = 0x43d; |  | 
| CPU_AL = 0x10; |  | 
| mem[0x004f8] = 0xee;            // out  dx, al |  | 
| mem[0x004f9] = 0xea;            // call far |  | 
| SETBIOSMEM16(0x004fa, 0x0000); |  | 
| SETBIOSMEM16(0x004fc, 0xffff); |  | 
| } |  | 
| else { |  | 
| CPU_IP = 0x0002; |  | 
| } |  | 
| } |  | 
| } |  | 
 |  |  | 
| // テスト(こんなんじゃだめぽ | int             i; | 
| static void bios0x1f(void) { |  | 
 |  |  | 
| BYTE    work[256]; | bios_itfprepare(); | 
| UINT32  src; | bios_memclear(); | 
| UINT32  dst; | bios_vectorset(); | 
| UINT    leng; | bios0x09_init(); | 
| UINT    l; | bios_reinitbyswitch(); | 
|  | bios0x18_0c(); | 
| if (CPU_AH == 0x90) { |  | 
| MEML_READSTR(CPU_ES, CPU_BX + 0x10, work, 0x10); | if (!np2cfg.ITF_WORK) { | 
| src = work[2] + (work[3] << 8) + (work[4] << 16) + CPU_SI; | for (i=0; i<8; i++) { | 
| dst = work[10] + (work[11] << 8) + (work[12] << 16) + CPU_DI; | mem[MEMB_MSW + (i*4)] = msw_default[i]; | 
| leng = LOW16(CPU_CX - 1) + 1; | } | 
| TRACEOUT(("protect bios: memmove")); | CPU_FLAGL |= C_FLAG; | 
| TRACEOUT(("%.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x", |  | 
| work[0], work[1], work[2], work[3], |  | 
| work[4], work[5], work[6], work[7])); |  | 
| TRACEOUT(("%.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x", |  | 
| work[8], work[9], work[10], work[11], |  | 
| work[12], work[13], work[14], work[15])); |  | 
| TRACEOUT(("SI=%.4x DI=%.4x CX=%.4x", CPU_SI, CPU_DI, CPU_CX)); |  | 
| TRACEOUT(("src:%08x dst:%08x leng:%08x", src, dst, leng)); |  | 
| do { |  | 
| l = min(leng, 256); |  | 
| MEML_READ(src, work, l); |  | 
| MEML_WRITE(dst, work, l); |  | 
| src += l; |  | 
| dst += l; |  | 
| leng -= l; |  | 
| } while(leng); |  | 
 | } | } | 
 | else { | else { | 
| TRACEOUT(("unsupport protect bios AH=%.2x", CPU_AH)); | CPU_DX = 0x43d; | 
|  | CPU_AL = 0x10; | 
|  | mem[0x004f8] = 0xee;            // out  dx, al | 
|  | mem[0x004f9] = 0xea;            // call far | 
|  | SETBIOSMEM16(0x004fa, 0x0000); | 
|  | SETBIOSMEM16(0x004fc, 0xffff); | 
|  | CPU_FLAGL &= ~C_FLAG; | 
 | } | } | 
 | } | } | 
 |  |  | 
 |  |  | 
 | UINT MEMCALL biosfunc(UINT32 adrs) { | UINT MEMCALL biosfunc(UINT32 adrs) { | 
 |  |  | 
 | UINT16  bootseg; | UINT16  bootseg; | 
| Line 343  UINT MEMCALL biosfunc(UINT32 adrs) { | Line 325  UINT MEMCALL biosfunc(UINT32 adrs) { | 
 | return(0); | return(0); | 
 | } | } | 
 |  |  | 
| switch(adrs) { | //      TRACEOUT(("biosfunc(%x)", adrs)); | 
| case BIOS_BASE + BIOSOFST_EOIM: | #if defined(CPUCORE_IA32) && defined(TRACE) | 
| CPU_REMCLOCK -= 300; | if (CPU_STAT_PAGING) { | 
| iocore_out8(0x00, 0x20); | UINT32 pde = i286_memoryread_d(CPU_STAT_PDE_BASE); | 
| return(0); | if (!(pde & CPU_PDE_PRESENT)) { | 
|  | TRACEOUT(("page0: PTE not present")); | 
| case BIOS_BASE + BIOSOFST_EOIS: | } | 
| iocore_out8(0x08, 0x20); | else { | 
| if (!pic.pi[1].isr) { | UINT32 pte = i286_memoryread_d(pde & CPU_PDE_BASEADDR_MASK); | 
| iocore_out8(0x00, 0x20); | if (!(pte & CPU_PTE_PRESENT)) { | 
|  | TRACEOUT(("page0: not present")); | 
 | } | } | 
| return(0); | else if (pte & CPU_PTE_BASEADDR_MASK) { | 
|  | TRACEOUT(("page0: physical address != 0 (pte = %.8x)", pte)); | 
|  | } | 
|  | } | 
|  | } | 
|  | #endif | 
 |  |  | 
| case BIOS_BASE + BIOSOFST_02: | switch(adrs) { | 
| CPU_REMCLOCK -= 300; | case BIOS_BASE + BIOSOFST_ITF:          // リセット | 
| bios0x02(); | bios_itfcall(); | 
 | return(1); | return(1); | 
 |  |  | 
| case BIOS_BASE + BIOSOFST_08: | case BIOS_BASE + BIOSOFST_INIT:         // ブート | 
| CPU_REMCLOCK -= 300; | bios_reinitbyswitch(); | 
| bios0x08(); | bios_vectorset(); | 
|  | bios_screeninit(); | 
|  | if (((pccore.model & PCMODELMASK) >= PCMODEL_VX) && | 
|  | (pccore.sound & 0x7e)) { | 
|  | iocore_out8(0x188, 0x27); | 
|  | iocore_out8(0x18a, 0x3f); | 
|  | } | 
 | return(1); | return(1); | 
 |  |  | 
 | case BIOS_BASE + BIOSOFST_09: | case BIOS_BASE + BIOSOFST_09: | 
| CPU_REMCLOCK -= 300; | CPU_REMCLOCK -= 500; | 
 | bios0x09(); | bios0x09(); | 
 | return(1); | return(1); | 
 |  |  | 
| Line 396  UINT MEMCALL biosfunc(UINT32 adrs) { | Line 390  UINT MEMCALL biosfunc(UINT32 adrs) { | 
 | bios0x19(); | bios0x19(); | 
 | return(1); | return(1); | 
 |  |  | 
| case BIOS_BASE + BIOSOFST_1a: | case BIOS_BASE + BIOSOFST_CMT: | 
 | CPU_REMCLOCK -= 200; | CPU_REMCLOCK -= 200; | 
| bios0x1a(); | bios0x1a_cmt(); | 
|  | return(1); | 
|  |  | 
|  | case BIOS_BASE + BIOSOFST_PRT: | 
|  | CPU_REMCLOCK -= 200; | 
|  | bios0x1a_prt(); | 
 | return(1); | return(1); | 
 |  |  | 
 | case BIOS_BASE + BIOSOFST_1b: | case BIOS_BASE + BIOSOFST_1b: | 
| Line 439  UINT MEMCALL biosfunc(UINT32 adrs) { | Line 438  UINT MEMCALL biosfunc(UINT32 adrs) { | 
 | } | } | 
 | return(1); | return(1); | 
 |  |  | 
 | case BIOS_BASE + BIOSOFST_PRT: |  | 
 | bios0x1a_main(); |  | 
 | return(0); |  | 
 |  |  | 
 | case 0xfd800:                                   // リセット |  | 
 | bios_boot(); |  | 
 | return(1); |  | 
 |  |  | 
 | case 0xfd802:                                   // ブート |  | 
 | bios_reinitbyswitch(); |  | 
 | bios_vectorset(); |  | 
 | bios_screeninit(); |  | 
 | if (((pccore.model & PCMODELMASK) >= PCMODEL_VX) && |  | 
 | (pccore.sound & 0x7e)) { |  | 
 | iocore_out8(0x188, 0x27); |  | 
 | iocore_out8(0x18a, 0x3f); |  | 
 | } |  | 
 |  |  | 
 | #if 1                                                                                                                           // ver0.73 |  | 
 | CPU_CS = 0xfd80;                        // SASI/SCSIリセット |  | 
 | CPU_IP = 0x2400; |  | 
 | #else |  | 
 | bootseg = bootstrapload(); |  | 
 | CPU_STI; |  | 
 | CPU_CS = (bootseg != 0)?bootseg:0xe800; |  | 
 | CPU_DS = 0x0000; |  | 
 | CPU_SS = 0x0030; |  | 
 | CPU_SP = 0x00e6; |  | 
 | CPU_IP = 0x0000; |  | 
 | #endif |  | 
 | return(1); |  | 
 |  |  | 
 | case 0xfffe8:                                   // ブートストラップロード | case 0xfffe8:                                   // ブートストラップロード | 
 | CPU_REMCLOCK -= 2000; | CPU_REMCLOCK -= 2000; | 
 | bootseg = bootstrapload(); | bootseg = bootstrapload(); | 
| Line 502  UINT MEMCALL biosfunc(UINT32 adrs) { | Line 469  UINT MEMCALL biosfunc(UINT32 adrs) { | 
 | } | } | 
 | return(0); | return(0); | 
 | } | } | 
|  | return(0); | 
| if (biosrom) { |  | 
| return(0); |  | 
| } |  | 
| CPU_IP--; |  | 
| CPU_REMCLOCK = -1; |  | 
| return(1); |  | 
 | } | } | 
 |  |  |