--- np2/i286c/memory.c 2003/12/22 01:44:59 1.15 +++ np2/i286c/memory.c 2004/02/18 02:03:36 1.18 @@ -10,8 +10,6 @@ BYTE mem[0x200000]; -#define USE_HIMEM 0x10fff0 - #if defined(TRACE) #define MEMORY_DEBUG #endif @@ -185,7 +183,12 @@ static void MEMCALL egc_wt(UINT32 addres static void MEMCALL emmc_wt(UINT32 address, REG8 value) { - extmem.pageptr[(address >> 14) & 3][LOW14(address)] = (BYTE)value; + i286core.e.ems[(address >> 14) & 3][LOW14(address)] = (BYTE)value; +} + +static void MEMCALL i286_wb(UINT32 address, REG8 value) { + + mem[address + 0x1c8000 - 0xe8000] = (BYTE)value; } static void MEMCALL i286_wn(UINT32 address, REG8 value) { @@ -285,13 +288,13 @@ static REG8 MEMCALL egc_rd(UINT32 addres static REG8 MEMCALL emmc_rd(UINT32 address) { - return(extmem.pageptr[(address >> 14) & 3][LOW14(address)]); + return(i286core.e.ems[(address >> 14) & 3][LOW14(address)]); } -static REG8 MEMCALL i286_itf(UINT32 address) { +static REG8 MEMCALL i286_rb(UINT32 address) { if (CPU_ITFBANK) { - address = ITF_ADRS + LOW15(address); + address += VRAM_STEP; } return(mem[address]); } @@ -445,19 +448,7 @@ static void MEMCALL grcgw_tdw1(UINT32 ad static void MEMCALL egcw_wt(UINT32 address, REG16 value) { CPU_REMCLOCK -= MEMWAIT_GRCG; - if (!(address & 1)) { - egc_write_w(address, value); - } - else { - if (!(egc.sft & 0x1000)) { - egc_write(address, (REG8)value); - egc_write(address + 1, (REG8)(value >> 8)); - } - else { - egc_write(address + 1, (REG8)(value >> 8)); - egc_write(address, (REG8)value); - } - } + egc_write_w(address, value); } static void MEMCALL emmcw_wt(UINT32 address, REG16 value) { @@ -465,15 +456,21 @@ static void MEMCALL emmcw_wt(UINT32 addr BYTE *ptr; if ((address & 0x3fff) != 0x3fff) { - ptr = extmem.pageptr[(address >> 14) & 3] + LOW14(address); + ptr = i286core.e.ems[(address >> 14) & 3] + LOW14(address); STOREINTELWORD(ptr, value); } else { - extmem.pageptr[(address >> 14) & 3][0x3fff] = (BYTE)value; - extmem.pageptr[((address + 1) >> 14) & 3][0] = (BYTE)(value >> 8); + i286core.e.ems[(address >> 14) & 3][0x3fff] = (BYTE)value; + i286core.e.ems[((address + 1) >> 14) & 3][0] = (BYTE)(value >> 8); } } +static void MEMCALL i286w_wb(UINT32 address, REG16 value) { + + mem[address + 0x1c8000 - 0xe8000] = (BYTE)value; + mem[address + 0x1c8001 - 0xe8000] = (BYTE)(value >> 8); +} + static void MEMCALL i286w_wn(UINT32 address, REG16 value) { (void)address; @@ -580,24 +577,8 @@ static REG16 MEMCALL grcgw_tcr1(UINT32 a static REG16 MEMCALL egcw_rd(UINT32 address) { - REG16 ret; - CPU_REMCLOCK -= MEMWAIT_GRCG; - if (!(address & 1)) { - return(egc_read_w(address)); - } - else { - if (!(egc.sft & 0x1000)) { - ret = egc_read(address); - ret += egc_read(address + 1) << 8; - return(ret); - } - else { - ret = egc_read(address + 1) << 8; - ret += egc_read(address); - return(ret); - } - } + return(egc_read_w(address)); } static REG16 MEMCALL emmcw_rd(UINT32 address) { @@ -606,20 +587,20 @@ const BYTE *ptr; REG16 ret; if ((address & 0x3fff) != 0x3fff) { - ptr = extmem.pageptr[(address >> 14) & 3] + LOW14(address); + ptr = i286core.e.ems[(address >> 14) & 3] + LOW14(address); return(LOADINTELWORD(ptr)); } else { - ret = extmem.pageptr[(address >> 14) & 3][0x3fff]; - ret += extmem.pageptr[((address + 1) >> 14) & 3][0] << 8; + ret = i286core.e.ems[(address >> 14) & 3][0x3fff]; + ret += i286core.e.ems[((address + 1) >> 14) & 3][0] << 8; return(ret); } } -static REG16 MEMCALL i286w_itf(UINT32 address) { +static REG16 MEMCALL i286w_rb(UINT32 address) { if (CPU_ITFBANK) { - address = ITF_ADRS + LOW15(address); + address += VRAM_STEP; } return(LOADINTELWORD(mem + address)); } @@ -640,6 +621,17 @@ typedef struct { } MEMFN; typedef struct { + MEM8READ brd8; + MEM8READ ird8; + MEM8WRITE ewr8; + MEM8WRITE bwr8; + MEM16READ brd16; + MEM16READ ird16; + MEM16WRITE ewr16; + MEM16WRITE bwr16; +} MMAPTBL; + +typedef struct { MEM8READ rd8; MEM8WRITE wr8; MEM16READ rd16; @@ -654,7 +646,7 @@ static MEMFN memfn = { i286_rd, i286_rd, i286_rd, i286_rd, // 80 tram_rd, vram_r0, vram_r0, vram_r0, // a0 emmc_rd, emmc_rd, i286_rd, i286_rd, // c0 - vram_r0, i286_rd, i286_rd, i286_itf}, // f0 + vram_r0, i286_rd, i286_rd, i286_rb}, // f0 {i286_wt, i286_wt, i286_wt, i286_wt, // 00 i286_wt, i286_wt, i286_wt, i286_wt, // 20 @@ -672,7 +664,7 @@ static MEMFN memfn = { i286w_rd, i286w_rd, i286w_rd, i286w_rd, // 80 tramw_rd, vramw_r0, vramw_r0, vramw_r0, // a0 emmcw_rd, emmcw_rd, i286w_rd, i286w_rd, // c0 - vramw_r0, i286w_rd, i286w_rd, i286w_itf}, // e0 + vramw_r0, i286w_rd, i286w_rd, i286w_rb}, // e0 {i286w_wt, i286w_wt, i286w_wt, i286w_wt, // 00 i286w_wt, i286w_wt, i286w_wt, i286w_wt, // 20 @@ -683,6 +675,12 @@ static MEMFN memfn = { emmcw_wt, emmcw_wt, i286w_wn, i286w_wn, // c0 vramw_w0, i286w_wn, i286w_wn, i286w_wn}}; // e0 +static const MMAPTBL mmaptbl[2] = { + {i286_rd, i286_rb, i286_wn, i286_wn, + i286w_rd, i286w_rb, i286w_wn, i286w_wn}, + {i286_rb, i286_rb, i286_wt, i286_wb, + i286w_rb, i286w_rb, i286w_wt, i286w_wb}}; + static const VACCTBL vacctbl[0x10] = { {vram_r0, vram_w0, vramw_r0, vramw_w0}, // 00 {vram_r1, vram_w1, vramw_r1, vramw_w1}, @@ -714,6 +712,34 @@ static REG16 MEMCALL i286_nonram_rw(UINT return(0xffff); } + +void MEMCALL i286_memorymap(UINT type) { + +const MMAPTBL *mm; + + mm = mmaptbl + (type & 1); + + memfn.rd8[0xe8000 >> 15] = mm->brd8; + memfn.rd8[0xf0000 >> 15] = mm->brd8; + memfn.rd8[0xf8000 >> 15] = mm->ird8; + + memfn.wr8[0xd0000 >> 15] = mm->ewr8; + memfn.wr8[0xd8000 >> 15] = mm->ewr8; + memfn.wr8[0xe8000 >> 15] = mm->bwr8; + memfn.wr8[0xf0000 >> 15] = mm->bwr8; + memfn.wr8[0xf8000 >> 15] = mm->bwr8; + + memfn.rd16[0xe8000 >> 15] = mm->brd16; + memfn.rd16[0xf0000 >> 15] = mm->brd16; + memfn.rd16[0xf8000 >> 15] = mm->ird16; + + memfn.wr16[0xd0000 >> 15] = mm->ewr16; + memfn.wr16[0xd8000 >> 15] = mm->ewr16; + memfn.wr16[0xe8000 >> 15] = mm->bwr16; + memfn.wr16[0xf0000 >> 15] = mm->bwr16; + memfn.wr16[0xf8000 >> 15] = mm->bwr16; +} + void MEMCALL i286_vram_dispatch(UINT func) { const VACCTBL *vacc;