#include "compiler.h"
#ifndef NP2_MEMORY_ASM
#include "cpucore.h"
#include "pccore.h"
#include "iocore.h"
#include "memtram.h"
#include "memvram.h"
#include "memegc.h"
#if defined(SUPPORT_PC9821)
#include "memvga.h"
#endif
#include "memems.h"
#include "memepp.h"
#include "vram.h"
#include "font.h"
UINT8 mem[0x200000];
// ---- MAIN
static REG8 MEMCALL memmain_rd8(UINT32 address) {
return(mem[address & CPU_ADRSMASK]);
}
static REG16 MEMCALL memmain_rd16(UINT32 address) {
const UINT8 *ptr;
ptr = mem + (address & CPU_ADRSMASK);
return(LOADINTELWORD(ptr));
}
static void MEMCALL memmain_wr8(UINT32 address, REG8 value) {
mem[address & CPU_ADRSMASK] = (UINT8)value;
}
static void MEMCALL memmain_wr16(UINT32 address, REG16 value) {
UINT8 *ptr;
ptr = mem + (address & CPU_ADRSMASK);
STOREINTELWORD(ptr, value);
}
// ---- N/C
static REG8 MEMCALL memnc_rd8(UINT32 address) {
(void)address;
return(0xff);
}
static REG16 MEMCALL memnc_rd16(UINT32 address) {
(void)address;
return(0xffff);
}
static void MEMCALL memnc_wr8(UINT32 address, REG8 value) {
(void)address;
(void)value;
}
static void MEMCALL memnc_wr16(UINT32 address, REG16 value) {
(void)address;
(void)value;
}
// ---- write byte
static void MEMCALL grcg_rmw0(UINT32 address, REG8 value) { // VRAM
REG8 mask;
UINT8 *vram;
CPU_REMCLOCK -= MEMWAIT_GRCG;
mask = ~value;
address = LOW15(address);
vramupdate[address] |= 1;
gdcs.grphdisp |= 1;
vram = mem + address;
if (!(grcg.modereg & 1)) {
vram[VRAM0_B] &= mask;
vram[VRAM0_B] |= (value & grcg.tile[0].b[0]);
}
if (!(grcg.modereg & 2)) {
vram[VRAM0_R] &= mask;
vram[VRAM0_R] |= (value & grcg.tile[1].b[0]);
}
if (!(grcg.modereg & 4)) {
vram[VRAM0_G] &= mask;
vram[VRAM0_G] |= (value & grcg.tile[2].b[0]);
}
if (!(grcg.modereg & 8)) {
vram[VRAM0_E] &= mask;
vram[VRAM0_E] |= (value & grcg.tile[3].b[0]);
}
}
static void MEMCALL grcg_rmw1(UINT32 address, REG8 value) { // VRAM
REG8 mask;
UINT8 *vram;
CPU_REMCLOCK -= MEMWAIT_GRCG;
mask = ~value;
address = LOW15(address);
vramupdate[address] |= 2;
gdcs.grphdisp |= 2;
vram = mem + address;
if (!(grcg.modereg & 1)) {
vram[VRAM1_B] &= mask;
vram[VRAM1_B] |= (value & grcg.tile[0].b[0]);
}
if (!(grcg.modereg & 2)) {
vram[VRAM1_R] &= mask;
vram[VRAM1_R] |= (value & grcg.tile[1].b[0]);
}
if (!(grcg.modereg & 4)) {
vram[VRAM1_G] &= mask;
vram[VRAM1_G] |= (value & grcg.tile[2].b[0]);
}
if (!(grcg.modereg & 8)) {
vram[VRAM1_E] &= mask;
vram[VRAM1_E] |= (value & grcg.tile[3].b[0]);
}
}
static void MEMCALL grcg_tdw0(UINT32 address, REG8 value) { // VRAM
UINT8 *vram;
CPU_REMCLOCK -= MEMWAIT_GRCG;
address = LOW15(address);
vramupdate[address] |= 1;
gdcs.grphdisp |= 1;
vram = mem + address;
if (!(grcg.modereg & 1)) {
vram[VRAM0_B] = grcg.tile[0].b[0];
}
if (!(grcg.modereg & 2)) {
vram[VRAM0_R] = grcg.tile[1].b[0];
}
if (!(grcg.modereg & 4)) {
vram[VRAM0_G] = grcg.tile[2].b[0];
}
if (!(grcg.modereg & 8)) {
vram[VRAM0_E] = grcg.tile[3].b[0];
}
(void)value;
}
static void MEMCALL grcg_tdw1(UINT32 address, REG8 value) { // VRAM
UINT8 *vram;
CPU_REMCLOCK -= MEMWAIT_GRCG;
address = LOW15(address);
vramupdate[address] |= 2;
gdcs.grphdisp |= 2;
vram = mem + address;
if (!(grcg.modereg & 1)) {
vram[VRAM1_B] = grcg.tile[0].b[0];
}
if (!(grcg.modereg & 2)) {
vram[VRAM1_R] = grcg.tile[1].b[0];
}
if (!(grcg.modereg & 4)) {
vram[VRAM1_G] = grcg.tile[2].b[0];
}
if (!(grcg.modereg & 8)) {
vram[VRAM1_E] = grcg.tile[3].b[0];
}
(void)value;
}
static void MEMCALL egc_wt(UINT32 address, REG8 value) { // VRAM
CPU_REMCLOCK -= MEMWAIT_GRCG;
memegc_wr8(address, value);
}
// ---- read byte
static REG8 MEMCALL grcg_tcr0(UINT32 address) { // VRAM
const UINT8 *vram;
REG8 ret;
CPU_REMCLOCK -= MEMWAIT_GRCG;
vram = mem + LOW15(address);
ret = 0;
if (!(grcg.modereg & 1)) {
ret |= vram[VRAM0_B] ^ grcg.tile[0].b[0];
}
if (!(grcg.modereg & 2)) {
ret |= vram[VRAM0_R] ^ grcg.tile[1].b[0];
}
if (!(grcg.modereg & 4)) {
ret |= vram[VRAM0_G] ^ grcg.tile[2].b[0];
}
if (!(grcg.modereg & 8)) {
ret |= vram[VRAM0_E] ^ grcg.tile[3].b[0];
}
return(ret ^ 0xff);
}
static REG8 MEMCALL grcg_tcr1(UINT32 address) { // VRAM
const UINT8 *vram;
REG8 ret;
CPU_REMCLOCK -= MEMWAIT_GRCG;
ret = 0;
vram = mem + LOW15(address);
if (!(grcg.modereg & 1)) {
ret |= vram[VRAM1_B] ^ grcg.tile[0].b[0];
}
if (!(grcg.modereg & 2)) {
ret |= vram[VRAM1_R] ^ grcg.tile[1].b[0];
}
if (!(grcg.modereg & 4)) {
ret |= vram[VRAM1_G] ^ grcg.tile[2].b[0];
}
if (!(grcg.modereg & 8)) {
ret |= vram[VRAM1_E] ^ grcg.tile[3].b[0];
}
return(ret ^ 0xff);
}
static REG8 MEMCALL egc_rd(UINT32 address) { // VRAM
CPU_REMCLOCK -= MEMWAIT_GRCG;
return(memegc_rd8(address));
}
// ---- write word
#define GRCGW_RMW(page) { \
UINT8 *vram; \
CPU_REMCLOCK -= MEMWAIT_GRCG; \
address = LOW15(address); \
vramupdate[address] |= (1 << page); \
vramupdate[address + 1] |= (1 << page); \
gdcs.grphdisp |= (1 << page); \
vram = mem + address + (VRAM_STEP * (page)); \
if (!(grcg.modereg & 1)) { \
UINT8 tmp; \
tmp = (UINT8)value; \
vram[VRAM0_B+0] &= (~tmp); \
vram[VRAM0_B+0] |= (tmp & grcg.tile[0].b[0]); \
tmp = (UINT8)(value >> 8); \
vram[VRAM0_B+1] &= (~tmp); \
vram[VRAM0_B+1] |= (tmp & grcg.tile[0].b[0]); \
} \
if (!(grcg.modereg & 2)) { \
UINT8 tmp; \
tmp = (UINT8)value; \
vram[VRAM0_R+0] &= (~tmp); \
vram[VRAM0_R+0] |= (tmp & grcg.tile[1].b[0]); \
tmp = (UINT8)(value >> 8); \
vram[VRAM0_R+1] &= (~tmp); \
vram[VRAM0_R+1] |= (tmp & grcg.tile[1].b[0]); \
} \
if (!(grcg.modereg & 4)) { \
UINT8 tmp; \
tmp = (UINT8)value; \
vram[VRAM0_G+0] &= (~tmp); \
vram[VRAM0_G+0] |= (tmp & grcg.tile[2].b[0]); \
tmp = (UINT8)(value >> 8); \
vram[VRAM0_G+1] &= (~tmp); \
vram[VRAM0_G+1] |= (tmp & grcg.tile[2].b[0]); \
} \
if (!(grcg.modereg & 8)) { \
UINT8 tmp; \
tmp = (UINT8)value; \
vram[VRAM0_E+0] &= (~tmp); \
vram[VRAM0_E+0] |= (tmp & grcg.tile[3].b[0]); \
tmp = (UINT8)(value >> 8); \
vram[VRAM0_E+1] &= (~tmp); \
vram[VRAM0_E+1] |= (tmp & grcg.tile[3].b[0]); \
} \
}
#define GRCGW_TDW(page) { \
UINT8 *vram; \
CPU_REMCLOCK -= MEMWAIT_GRCG; \
address = LOW15(address); \
vramupdate[address] |= (1 << page); \
vramupdate[address + 1] |= (1 << page); \
gdcs.grphdisp |= (1 << page); \
vram = mem + address + (VRAM_STEP * (page)); \
if (!(grcg.modereg & 1)) { \
vram[VRAM0_B+0] = grcg.tile[0].b[0]; \
vram[VRAM0_B+1] = grcg.tile[0].b[0]; \
} \
if (!(grcg.modereg & 2)) { \
vram[VRAM0_R+0] = grcg.tile[1].b[0]; \
vram[VRAM0_R+1] = grcg.tile[1].b[0]; \
} \
if (!(grcg.modereg & 4)) { \
vram[VRAM0_G+0] = grcg.tile[2].b[0]; \
vram[VRAM0_G+1] = grcg.tile[2].b[0]; \
} \
if (!(grcg.modereg & 8)) { \
vram[VRAM0_E+0] = grcg.tile[3].b[0]; \
vram[VRAM0_E+1] = grcg.tile[3].b[0]; \
} \
(void)value; \
}
static void MEMCALL grcgw_rmw0(UINT32 address, REG16 value) GRCGW_RMW(0)
static void MEMCALL grcgw_rmw1(UINT32 address, REG16 value) GRCGW_RMW(1)
static void MEMCALL grcgw_tdw0(UINT32 address, REG16 value) GRCGW_TDW(0)
static void MEMCALL grcgw_tdw1(UINT32 address, REG16 value) GRCGW_TDW(1)
static void MEMCALL egcw_wt(UINT32 address, REG16 value) {
CPU_REMCLOCK -= MEMWAIT_GRCG;
memegc_wr16(address, value);
}
// ---- read word
static REG16 MEMCALL grcgw_tcr0(UINT32 address) {
UINT8 *vram;
REG16 ret;
CPU_REMCLOCK -= MEMWAIT_GRCG;
ret = 0;
vram = mem + LOW15(address);
if (!(grcg.modereg & 1)) {
ret |= LOADINTELWORD(vram + VRAM0_B) ^ grcg.tile[0].w;
}
if (!(grcg.modereg & 2)) {
ret |= LOADINTELWORD(vram + VRAM0_R) ^ grcg.tile[1].w;
}
if (!(grcg.modereg & 4)) {
ret |= LOADINTELWORD(vram + VRAM0_G) ^ grcg.tile[2].w;
}
if (!(grcg.modereg & 8)) {
ret |= LOADINTELWORD(vram + VRAM0_E) ^ grcg.tile[3].w;
}
return((UINT16)~ret);
}
static REG16 MEMCALL grcgw_tcr1(UINT32 address) {
UINT8 *vram;
REG16 ret;
CPU_REMCLOCK -= MEMWAIT_GRCG;
ret = 0;
vram = mem + LOW15(address);
if (!(grcg.modereg & 1)) {
ret |= LOADINTELWORD(vram + VRAM1_B) ^ grcg.tile[0].w;
}
if (!(grcg.modereg & 2)) {
ret |= LOADINTELWORD(vram + VRAM1_R) ^ grcg.tile[1].w;
}
if (!(grcg.modereg & 4)) {
ret |= LOADINTELWORD(vram + VRAM1_G) ^ grcg.tile[2].w;
}
if (!(grcg.modereg & 8)) {
ret |= LOADINTELWORD(vram + VRAM1_E) ^ grcg.tile[3].w;
}
return((UINT16)(~ret));
}
static REG16 MEMCALL egcw_rd(UINT32 address) {
CPU_REMCLOCK -= MEMWAIT_GRCG;
return(memegc_rd16(address));
}
// ---- table
typedef void (MEMCALL * MEM8WRITE)(UINT32 address, REG8 value);
typedef REG8 (MEMCALL * MEM8READ)(UINT32 address);
typedef void (MEMCALL * MEM16WRITE)(UINT32 address, REG16 value);
typedef REG16 (MEMCALL * MEM16READ)(UINT32 address);
typedef struct {
MEM8READ rd8[0x20];
MEM8WRITE wr8[0x20];
MEM16READ rd16[0x20];
MEM16WRITE wr16[0x20];
} MEMFN;
typedef struct {
MEM8READ brd8; // E8000-F7FFF byte read
MEM8READ ird8; // F8000-FFFFF byte read
MEM8WRITE bwr8; // E8000-FFFFF byte write
MEM16READ brd16; // E8000-F7FFF word read
MEM16READ ird16; // F8000-FFFFF word read
MEM16WRITE bwr16; // F8000-FFFFF word write
} MMAPTBL;
typedef struct {
MEM8READ rd8;
MEM8WRITE wr8;
MEM16READ rd16;
MEM16WRITE wr16;
} VACCTBL;
static MEMFN memfn = {
{memmain_rd8, memmain_rd8, memmain_rd8, memmain_rd8, // 00
memmain_rd8, memmain_rd8, memmain_rd8, memmain_rd8, // 20
memmain_rd8, memmain_rd8, memmain_rd8, memmain_rd8, // 40
memmain_rd8, memmain_rd8, memmain_rd8, memmain_rd8, // 60
memmain_rd8, memmain_rd8, memmain_rd8, memmain_rd8, // 80
memtram_rd8, memvram0_rd8, memvram0_rd8, memvram0_rd8, // a0
memems_rd8, memems_rd8, memmain_rd8, memmain_rd8, // c0
memvram0_rd8, memmain_rd8, memmain_rd8, memf800_rd8}, // e0
{memmain_wr8, memmain_wr8, memmain_wr8, memmain_wr8, // 00
memmain_wr8, memmain_wr8, memmain_wr8, memmain_wr8, // 20
memmain_wr8, memmain_wr8, memmain_wr8, memmain_wr8, // 40
memmain_wr8, memmain_wr8, memmain_wr8, memmain_wr8, // 60
memmain_wr8, memmain_wr8, memmain_wr8, memmain_wr8, // 80
memtram_wr8, memvram0_wr8, memvram0_wr8, memvram0_wr8, // a0
memems_wr8, memems_wr8, memd000_wr8, memd000_wr8, // c0
memvram0_wr8, memnc_wr8, memnc_wr8, memnc_wr8}, // e0
{memmain_rd16, memmain_rd16, memmain_rd16, memmain_rd16, // 00
memmain_rd16, memmain_rd16, memmain_rd16, memmain_rd16, // 20
memmain_rd16, memmain_rd16, memmain_rd16, memmain_rd16, // 40
memmain_rd16, memmain_rd16, memmain_rd16, memmain_rd16, // 60
memmain_rd16, memmain_rd16, memmain_rd16, memmain_rd16, // 80
memtram_rd16, memvram0_rd16, memvram0_rd16, memvram0_rd16, // a0
memems_rd16, memems_rd16, memmain_rd16, memmain_rd16, // c0
memvram0_rd16, memmain_rd16, memmain_rd16, memf800_rd16}, // e0
{memmain_wr16, memmain_wr16, memmain_wr16, memmain_wr16, // 00
memmain_wr16, memmain_wr16, memmain_wr16, memmain_wr16, // 20
memmain_wr16, memmain_wr16, memmain_wr16, memmain_wr16, // 40
memmain_wr16, memmain_wr16, memmain_wr16, memmain_wr16, // 60
memmain_wr16, memmain_wr16, memmain_wr16, memmain_wr16, // 80
memtram_wr16, memvram0_wr16, memvram0_wr16, memvram0_wr16, // a0
memems_wr16, memems_wr16, memd000_wr16, memd000_wr16, // c0
memvram0_wr16, memnc_wr16, memnc_wr16, memnc_wr16}}; // e0
static const MMAPTBL mmaptbl[2] = {
{memmain_rd8, memf800_rd8, memnc_wr8,
memmain_rd16, memf800_rd16, memnc_wr16},
{memf800_rd8, memf800_rd8, memepson_wr8,
memf800_rd16, memf800_rd16, memepson_wr16}};
static const VACCTBL vacctbl[0x10] = {
{memvram0_rd8, memvram0_wr8, memvram0_rd16, memvram0_wr16}, // 00
{memvram1_rd8, memvram1_wr8, memvram1_rd16, memvram1_wr16},
{memvram0_rd8, memvram0_wr8, memvram0_rd16, memvram0_wr16},
{memvram1_rd8, memvram1_wr8, memvram1_rd16, memvram1_wr16},
{memvram0_rd8, memvram0_wr8, memvram0_rd16, memvram0_wr16}, // 40
{memvram1_rd8, memvram1_wr8, memvram1_rd16, memvram1_wr16},
{memvram0_rd8, memvram0_wr8, memvram0_rd16, memvram0_wr16},
{memvram1_rd8, memvram1_wr8, memvram1_rd16, memvram1_wr16},
{grcg_tcr0, grcg_tdw0, grcgw_tcr0, grcgw_tdw0}, // 80
{grcg_tcr1, grcg_tdw1, grcgw_tcr1, grcgw_tdw1},
{egc_rd, egc_wt, egcw_rd, egcw_wt},
{egc_rd, egc_wt, egcw_rd, egcw_wt},
{memvram0_rd8, grcg_rmw0, memvram0_rd16, grcgw_rmw0}, // c0
{memvram1_rd8, grcg_rmw1, memvram1_rd16, grcgw_rmw1},
{egc_rd, egc_wt, egcw_rd, egcw_wt},
{egc_rd, egc_wt, egcw_rd, egcw_wt}};
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[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[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;
vacc = vacctbl + (func & 0x0f);
memfn.rd8[0xa8000 >> 15] = vacc->rd8;
memfn.rd8[0xb0000 >> 15] = vacc->rd8;
memfn.rd8[0xb8000 >> 15] = vacc->rd8;
memfn.rd8[0xe0000 >> 15] = vacc->rd8;
memfn.wr8[0xa8000 >> 15] = vacc->wr8;
memfn.wr8[0xb0000 >> 15] = vacc->wr8;
memfn.wr8[0xb8000 >> 15] = vacc->wr8;
memfn.wr8[0xe0000 >> 15] = vacc->wr8;
memfn.rd16[0xa8000 >> 15] = vacc->rd16;
memfn.rd16[0xb0000 >> 15] = vacc->rd16;
memfn.rd16[0xb8000 >> 15] = vacc->rd16;
memfn.rd16[0xe0000 >> 15] = vacc->rd16;
memfn.wr16[0xa8000 >> 15] = vacc->wr16;
memfn.wr16[0xb0000 >> 15] = vacc->wr16;
memfn.wr16[0xb8000 >> 15] = vacc->wr16;
memfn.wr16[0xe0000 >> 15] = vacc->wr16;
if (!(func & (1 << VOPBIT_ANALOG))) { // digital
memfn.rd8[0xe0000 >> 15] = memnc_rd8;
memfn.wr8[0xe0000 >> 15] = memnc_wr8;
memfn.rd16[0xe0000 >> 15] = memnc_rd16;
memfn.wr16[0xe0000 >> 15] = memnc_wr16;
}
}
REG8 MEMCALL i286_memoryread(UINT32 address) {
if (address < I286_MEMREADMAX) {
return(mem[address]);
}
#if defined(USE_HIMEM)
else if (address >= USE_HIMEM) {
address -= 0x100000;
if (address < CPU_EXTMEMSIZE) {
return(CPU_EXTMEM[address]);
}
else {
return(0xff);
}
}
#endif
else {
return(memfn.rd8[(address >> 15) & 0x1f](address));
}
}
REG16 MEMCALL i286_memoryread_w(UINT32 address) {
REG16 ret;
if (address < (I286_MEMREADMAX - 1)) {
return(LOADINTELWORD(mem + address));
}
#if defined(USE_HIMEM)
else if (address >= (USE_HIMEM - 1)) {
address -= 0x100000;
if (address == (USE_HIMEM - 0x100000 - 1)) {
ret = mem[0x100000 + address];
}
else if (address < CPU_EXTMEMSIZE) {
ret = CPU_EXTMEM[address];
}
else {
ret = 0xff;
}
address++;
if (address < CPU_EXTMEMSIZE) {
ret += CPU_EXTMEM[address] << 8;
}
else {
ret += 0xff00;
}
return(ret);
}
#endif
else if ((address & 0x7fff) != 0x7fff) {
return(memfn.rd16[(address >> 15) & 0x1f](address));
}
else {
ret = memfn.rd8[(address >> 15) & 0x1f](address);
address++;
ret += memfn.rd8[(address >> 15) & 0x1f](address) << 8;
return(ret);
}
}
void MEMCALL i286_memorywrite(UINT32 address, REG8 value) {
if (address < I286_MEMWRITEMAX) {
mem[address] = (UINT8)value;
}
#if defined(USE_HIMEM)
else if (address >= USE_HIMEM) {
address -= 0x100000;
if (address < CPU_EXTMEMSIZE) {
CPU_EXTMEM[address] = (UINT8)value;
}
}
#endif
else {
memfn.wr8[(address >> 15) & 0x1f](address, value);
}
}
void MEMCALL i286_memorywrite_w(UINT32 address, REG16 value) {
if (address < (I286_MEMWRITEMAX - 1)) {
STOREINTELWORD(mem + address, value);
}
#if defined(USE_HIMEM)
else if (address >= (USE_HIMEM - 1)) {
address -= 0x100000;
if (address == (USE_HIMEM - 0x100000 - 1)) {
mem[address] = (UINT8)value;
}
else if (address < CPU_EXTMEMSIZE) {
CPU_EXTMEM[address] = (UINT8)value;
}
address++;
if (address < CPU_EXTMEMSIZE) {
CPU_EXTMEM[address] = (UINT8)(value >> 8);
}
}
#endif
else if ((address & 0x7fff) != 0x7fff) {
memfn.wr16[(address >> 15) & 0x1f](address, value);
}
else {
memfn.wr8[(address >> 15) & 0x1f](address, (UINT8)value);
address++;
memfn.wr8[(address >> 15) & 0x1f](address, (UINT8)(value >> 8));
}
}
REG8 MEMCALL meml_read8(UINT seg, UINT off) {
UINT32 address;
address = (seg << 4) + LOW16(off);
if (address < I286_MEMREADMAX) {
return(mem[address]);
}
else {
return(i286_memoryread(address));
}
}
REG16 MEMCALL meml_read16(UINT seg, UINT off) {
UINT32 address;
address = (seg << 4) + LOW16(off);
if (address < (I286_MEMREADMAX - 1)) {
return(LOADINTELWORD(mem + address));
}
else {
return(i286_memoryread_w(address));
}
}
void MEMCALL meml_write8(UINT seg, UINT off, REG8 value) {
UINT32 address;
address = (seg << 4) + LOW16(off);
if (address < I286_MEMWRITEMAX) {
mem[address] = (UINT8)value;
}
else {
i286_memorywrite(address, value);
}
}
void MEMCALL meml_write16(UINT seg, UINT off, REG16 value) {
UINT32 address;
address = (seg << 4) + LOW16(off);
if (address < (I286_MEMWRITEMAX - 1)) {
STOREINTELWORD(mem + address, value);
}
else {
i286_memorywrite_w(address, value);
}
}
void MEMCALL meml_readstr(UINT seg, UINT off, void *dat, UINT leng) {
UINT8 *out;
UINT32 adrs;
UINT size;
out = (UINT8 *)dat;
adrs = seg << 4;
off = LOW16(off);
if ((I286_MEMREADMAX >= 0x10000) &&
(adrs < (I286_MEMREADMAX - 0x10000))) {
if (leng) {
size = 0x10000 - off;
if (size >= leng) {
CopyMemory(out, mem + adrs + off, leng);
return;
}
CopyMemory(out, mem + adrs + off, size);
out += size;
leng -= size;
}
while(leng >= 0x10000) {
CopyMemory(out, mem + adrs, 0x10000);
out += 0x10000;
leng -= 0x10000;
}
if (leng) {
CopyMemory(out, mem + adrs, leng);
}
}
else {
while(leng--) {
*out++ = i286_memoryread(adrs + off);
off = LOW16(off + 1);
}
}
}
void MEMCALL meml_writestr(UINT seg, UINT off, const void *dat, UINT leng) {
UINT8 *out;
UINT32 adrs;
UINT size;
out = (UINT8 *)dat;
adrs = seg << 4;
off = LOW16(off);
if ((I286_MEMWRITEMAX >= 0x10000) &&
(adrs < (I286_MEMWRITEMAX - 0x10000))) {
if (leng) {
size = 0x10000 - off;
if (size >= leng) {
CopyMemory(mem + adrs + off, out, leng);
return;
}
CopyMemory(mem + adrs + off, out, size);
out += size;
leng -= size;
}
while(leng >= 0x10000) {
CopyMemory(mem + adrs, out, 0x10000);
out += 0x10000;
leng -= 0x10000;
}
if (leng) {
CopyMemory(mem + adrs, out, leng);
}
}
else {
while(leng--) {
i286_memorywrite(adrs + off, *out++);
off = LOW16(off + 1);
}
}
}
void MEMCALL meml_read(UINT32 address, void *dat, UINT leng) {
if ((address + leng) < I286_MEMREADMAX) {
CopyMemory(dat, mem + address, leng);
}
else {
UINT8 *out = (UINT8 *)dat;
if (address < I286_MEMREADMAX) {
CopyMemory(out, mem + address, I286_MEMREADMAX - address);
out += I286_MEMREADMAX - address;
leng -= I286_MEMREADMAX - address;
address = I286_MEMREADMAX;
}
while(leng--) {
*out++ = i286_memoryread(address++);
}
}
}
void MEMCALL meml_write(UINT32 address, const void *dat, UINT leng) {
const UINT8 *out;
if ((address + leng) < I286_MEMWRITEMAX) {
CopyMemory(mem + address, dat, leng);
}
else {
out = (UINT8 *)dat;
if (address < I286_MEMWRITEMAX) {
CopyMemory(mem + address, out, I286_MEMWRITEMAX - address);
out += I286_MEMWRITEMAX - address;
leng -= I286_MEMWRITEMAX - address;
address = I286_MEMWRITEMAX;
}
while(leng--) {
i286_memorywrite(address++, *out++);
}
}
}
#endif
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