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safety read/write vram memory

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This commit is contained in:
Akamaki
2025-02-24 05:53:34 +09:00
parent d70f43828c
commit 4bc47894de
1 changed files with 57 additions and 55 deletions
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112
src/video/vid_ps55da2.c
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@@ -437,12 +437,19 @@ typedef struct {
/* safety read for internal functions */
uint32_t
DA2_readvram_s(uint32_t addr, da2_t *da2)
DA2_vram_r(uint32_t addr, da2_t *da2)
{
if (addr & ~da2->vram_mask)
return -1;
return da2->vram[addr];
}
/* safety write for internal functions */
void
DA2_vram_w(uint32_t addr, uint8_t val, da2_t *da2)
{
da2->vram[addr & da2->vram_mask] = val;
return;
}
void
DA2_WritePlaneDataWithBitmask(uint32_t destaddr, const uint16_t mask, pixel32 *srcpx, da2_t *da2)
@@ -455,10 +462,10 @@ DA2_WritePlaneDataWithBitmask(uint32_t destaddr, const uint16_t mask, pixel32 *s
destaddr <<= 3;
/* read destination data with big endian order */
for (int i = 0; i < 8; i++)
writepx[i] = DA2_readvram_s((destaddr + 24) | i, da2)
| (DA2_readvram_s((destaddr + 16) | i, da2) << 8)
| (DA2_readvram_s((destaddr + 8) | i, da2) << 16)
| (DA2_readvram_s((destaddr + 0) | i, da2) << 24);
writepx[i] = DA2_vram_r((destaddr + 24) | i, da2)
| (DA2_vram_r((destaddr + 16) | i, da2) << 8)
| (DA2_vram_r((destaddr + 8) | i, da2) << 16)
| (DA2_vram_r((destaddr + 0) | i, da2) << 24);
DA2_VidSeq32 mask32in;
mask32in.d = (uint32_t) mask;
@@ -487,8 +494,8 @@ DA2_WritePlaneDataWithBitmask(uint32_t destaddr, const uint16_t mask, pixel32 *s
}
}
for (int i = 0; i < 8; i++) {
da2->vram[(da2->vram_mask & destaddr) | i] = (writepx[i] >> 24) & 0xff;
da2->vram[(da2->vram_mask & (destaddr + 8)) | i] = (writepx[i] >> 16) & 0xff;
DA2_vram_w(destaddr | i, (writepx[i] >> 24) & 0xff, da2);
DA2_vram_w((destaddr + 8) | i, (writepx[i] >> 16) & 0xff, da2);
}
}
@@ -531,10 +538,10 @@ DA2_CopyPlaneDataWithBitmask(uint32_t srcaddr, uint32_t destaddr, uint16_t mask,
srcaddr &= 0xfffffffe;
srcaddr <<= 3;
for (int i = 0; i < 8; i++)
srcpx.p8[i] = DA2_readvram_s((srcaddr + 24) | i, da2)
| (DA2_readvram_s((srcaddr + 16) | i, da2) << 8)
| (DA2_readvram_s((srcaddr + 8) | i, da2) << 16)
| (DA2_readvram_s((srcaddr + 0) | i, da2) << 24);
srcpx.p8[i] = DA2_vram_r((srcaddr + 24) | i, da2)
| (DA2_vram_r((srcaddr + 16) | i, da2) << 8)
| (DA2_vram_r((srcaddr + 8) | i, da2) << 16)
| (DA2_vram_r((srcaddr + 0) | i, da2) << 24);
DA2_WritePlaneDataWithBitmask(destaddr, mask, &srcpx, da2);
}
@@ -560,7 +567,7 @@ pixel1tohex(uint32_t addr, int index, da2_t *da2)
{
uint8_t pixeldata = 0;
for (int j = 0; j < 8; j++) {
if (da2->vram[(da2->vram_mask & (addr << 3)) | j] & (1 << (7 - index)))
if (DA2_vram_r(((addr << 3) | j) & (1 << (7 - index)), da2))
pixeldata++;
}
return pixeldata;
@@ -1724,8 +1731,8 @@ da2_render_text(da2_t *da2)
int chr_wide = 0;
// da2_log("\nda2ma: %x, da2sc: %x\n", da2->ma, da2->sc);
for (x = 0; x < da2->hdisp; x += 13) {
chr = da2->cram[(da2->ma) & da2->vram_display_mask];
attr = da2->cram[((da2->ma) + 1) & da2->vram_display_mask];
chr = da2->cram[(da2->ma) & DA2_MASK_CRAM];
attr = da2->cram[((da2->ma) + 1) & DA2_MASK_CRAM];
// if(chr!=0x20) da2_log("chr: %x, attr: %x ", chr, attr);
if (da2->attrc[LV_PAS_STATUS_CNTRL] & 0x80) /* IO 3E8h, Index 1Dh */
{ /* --Parse attribute byte in color mode-- */
@@ -1860,9 +1867,9 @@ da2_render_textm3(da2_t *da2)
int chr_wide = 0;
// da2_log("\nda2ma: %x, da2sc: %x\n", da2->ma, da2->sc);
for (x = 0; x < da2->hdisp; x += 13) {
chr = da2->vram[(DA2_VM03_BASECHR + (da2->ma)) & da2->vram_mask];
attr = da2->vram[((DA2_VM03_BASECHR + (da2->ma)) + 1) & da2->vram_mask];
extattr = da2->vram[((DA2_VM03_BASEEXATTR + (da2->ma)) + 1) & da2->vram_mask];
chr = DA2_vram_r(DA2_VM03_BASECHR + (da2->ma), da2);
attr = DA2_vram_r(DA2_VM03_BASECHR + (da2->ma) + 1, da2);
extattr = DA2_vram_r(DA2_VM03_BASEEXATTR + (da2->ma) + 1, da2);
// if(chr!=0x20) da2_log("addr: %x, chr: %x, attr: %x ", (DA2_VM03_BASECHR + da2->ma << 1) & da2->vram_mask, chr, attr);
bg = attr >> 4;
// if (da2->blink) bg &= ~0x8;
@@ -1880,7 +1887,7 @@ da2_render_textm3(da2_t *da2)
/* Stay drawing if the char code is DBCS and not at last column. */
if (chr_wide) {
/* Get high DBCS code from the next video address */
chr_dbcs = da2->vram[(DA2_VM03_BASECHR + (da2->ma) + 2) & da2->vram_mask];
chr_dbcs = DA2_vram_r(DA2_VM03_BASECHR + (da2->ma) + 2, da2);
chr_dbcs <<= 8;
chr_dbcs |= chr;
/* Get the font pattern */
@@ -2116,9 +2123,7 @@ da2_recalctimings(da2_t *da2)
da2_log("Set videomode to PS/55 Mode 03 text.\n");
da2->render = da2_render_textm3;
da2->vram_display_mask = DA2_MASK_CRAM;
}
/* PS/55 text(color/mono) */
else {
} else { /* PS/55 text(color/mono) */
da2_log("Set videomode to PS/55 Mode 8/E text.\n");
da2->render = da2_render_text;
da2->vram_display_mask = DA2_MASK_CRAM;
@@ -2243,19 +2248,19 @@ da2_gdcropB(uint32_t addr,uint8_t bitmask, da2_t *da2)
case 0: /*Set*/
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask) | (da2->gdcsrc[i] & ~bitmask);
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask) | (da2->vram[addr | i] & ~bitmask);
da2->vram[addr | i] = (da2->gdcinput[i] & bitmask) | (da2->vram[addr | i] & ~bitmask);
DA2_vram_w(addr | i, (da2->gdcinput[i] & bitmask) | (da2->vram[addr | i] & ~bitmask), da2);
break;
case 1: /*AND*/
// da2->vram[addr | i] = (da2->gdcinput[i] | ~bitmask) & da2->gdcsrc[i];
da2->vram[addr | i] = ((da2->gdcinput[i] & da2->gdcsrc[i]) & bitmask) | (da2->vram[addr | i] & ~bitmask);
DA2_vram_w(addr | i, ((da2->gdcinput[i] & da2->gdcsrc[i]) & bitmask) | (da2->vram[addr | i] & ~bitmask), da2);
break;
case 2: /*OR*/
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask) | da2->gdcsrc[i];
da2->vram[addr | i] = ((da2->gdcinput[i] | da2->gdcsrc[i]) & bitmask) | (da2->vram[addr | i] & ~bitmask);
DA2_vram_w(addr | i, ((da2->gdcinput[i] | da2->gdcsrc[i]) & bitmask) | (da2->vram[addr | i] & ~bitmask), da2);
break;
case 3: /*XOR*/
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask) ^ da2->gdcsrc[i];
da2->vram[addr | i] = ((da2->gdcinput[i] ^ da2->gdcsrc[i]) & bitmask) | (da2->vram[addr | i] & ~bitmask);
DA2_vram_w(addr | i, ((da2->gdcinput[i] ^ da2->gdcsrc[i]) & bitmask) | (da2->vram[addr | i] & ~bitmask), da2);
break;
}
}
@@ -2273,30 +2278,30 @@ da2_gdcropW(uint32_t addr, uint16_t bitmask, da2_t *da2)
case 0: /*Set*/
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask_l) | (da2->gdcsrc[i] & ~bitmask_l);
// da2->vram[(addr + 8) | i] = ((da2->gdcinput[i] >> 8) & bitmask_h) | ((da2->gdcsrc[i] >> 8) & ~bitmask_h);
da2->vram[addr | i] = (da2->gdcinput[i] & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l);
da2->vram[(addr + 8) | i] = ((da2->gdcinput[i] >> 8) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h);
DA2_vram_w(addr | i, (da2->gdcinput[i] & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l), da2);
DA2_vram_w((addr + 8) | i, ((da2->gdcinput[i] >> 8) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h), da2);
break;
case 1: /*AND*/
// da2->vram[addr | i] = (da2->gdcinput[i] | ~bitmask_l) & da2->gdcsrc[i];
// da2->vram[(addr + 8) | i] = ((da2->gdcinput[i] >> 8) | ~bitmask_h) & (da2->gdcsrc[i] >> 8);
da2->vram[addr | i] = ((da2->gdcinput[i] & da2->gdcsrc[i]) & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l);
da2->vram[(addr + 8) | i] = (((da2->gdcinput[i] >> 8) & (da2->gdcsrc[i] >> 8)) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h);
DA2_vram_w(addr | i, ((da2->gdcinput[i] & da2->gdcsrc[i]) & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l), da2);
DA2_vram_w((addr + 8) | i, (((da2->gdcinput[i] >> 8) & (da2->gdcsrc[i] >> 8)) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h), da2);
break;
case 2: /*OR*/
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask_l) | da2->gdcsrc[i];
// da2->vram[(addr + 8) | i] = ((da2->gdcinput[i] >> 8) & bitmask_h) | (da2->gdcsrc[i] >> 8);
da2->vram[addr | i] = ((da2->gdcinput[i] | da2->gdcsrc[i]) & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l);
da2->vram[(addr + 8) | i] = (((da2->gdcinput[i] >> 8) | (da2->gdcsrc[i] >> 8)) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h);
DA2_vram_w(addr | i, ((da2->gdcinput[i] | da2->gdcsrc[i]) & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l), da2);
DA2_vram_w((addr + 8) | i, (((da2->gdcinput[i] >> 8) | (da2->gdcsrc[i] >> 8)) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h), da2);
break;
case 3: /*XOR*/
// da2->vram[addr | i] = (da2->gdcinput[i] & bitmask_l) ^ da2->gdcsrc[i];
// da2->vram[(addr + 8) | i] = ((da2->gdcinput[i] >> 8) & bitmask_h) ^ (da2->gdcsrc[i] >> 8);
da2->vram[addr | i] = ((da2->gdcinput[i] ^ da2->gdcsrc[i]) & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l);
da2->vram[(addr + 8) | i] = (((da2->gdcinput[i] >> 8) ^ (da2->gdcsrc[i] >> 8)) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h);
DA2_vram_w(addr | i, ((da2->gdcinput[i] ^ da2->gdcsrc[i]) & bitmask_l) | (da2->vram[addr | i] & ~bitmask_l), da2);
DA2_vram_w((addr + 8) | i, (((da2->gdcinput[i] >> 8) ^ (da2->gdcsrc[i] >> 8)) & bitmask_h)
| (da2->vram[(addr + 8) | i] & ~bitmask_h), da2);
break;
}
}
@@ -2359,7 +2364,6 @@ da2_mmio_read(uint32_t addr, void *p)
} else
return da2->gdcla[da2->readplane];
} else { /* text mode 3 */
cycles -= video_timing_read_b;
return da2->vram[addr];
}
@@ -2371,8 +2375,7 @@ da2_mmio_readw(uint32_t addr, void *p)
//da2_log("da2_readW: %x %x %x %x %x\n", da2->ioctl[LS_MMIO], da2->fctl[LF_MMIO_SEL], da2->fctl[LF_MMIO_MODE], da2->fctl[LF_MMIO_ADDR], addr);
if (da2->ioctl[LS_MMIO] & 0x10) {
return (uint16_t) da2_mmio_read(addr, da2) | (uint16_t) (da2_mmio_read(addr + 1, da2) << 8);
} else if (!(da2->ioctl[LS_MODE] & 1)) /* 16 color or 256 color mode */
{
} else if (!(da2->ioctl[LS_MODE] & 1)) {/* 16 color or 256 color mode */
cycles -= video_timing_read_w;
addr &= DA2_MASK_MMIO;
for (int i = 0; i < 8; i++)
@@ -2417,8 +2420,8 @@ da2_mmio_write(uint32_t addr, uint8_t val, void *p)
{
da2_t *da2 = (da2_t *) p;
// da2_log("da2_mmio_write %x %x\n", addr, val);
if ((addr & ~DA2_MASK_MMIO) != 0xA0000)
return;
// if ((addr & ~DA2_MASK_MMIO) != 0xA0000)
// return;
addr &= DA2_MASK_MMIO;
if (da2->ioctl[LS_MMIO] & 0x10) {
@@ -2434,8 +2437,7 @@ da2_mmio_write(uint32_t addr, uint8_t val, void *p)
}
switch (da2->fctl[LF_MMIO_MODE]) {
case 0xb0: /* Gaiji RAM 1011 0000 */
addr &= DA2_MASK_GAIJIRAM; /* safety access */
da2->mmio.ram[addr] = val;
da2->mmio.ram[addr & DA2_MASK_GAIJIRAM] = val;
break;
case 0x10: /* Font ROM 0001 0000 */
/* Read-Only */
@@ -2509,7 +2511,7 @@ da2_mmio_write(uint32_t addr, uint8_t val, void *p)
case 2: /* equiv to vga write mode 1 */
for (int i = 0; i < 8; i++)
if (da2->writemask & (1 << i))
da2->vram[addr | i] = da2->gdcsrc[i];
DA2_vram_w(addr | i, da2->gdcsrc[i], da2);
break;
case 0:/* equiv to vga write mode 0 */
if (da2->gdcreg[LG_DATA_ROTATION] & 7)
@@ -2517,7 +2519,7 @@ da2_mmio_write(uint32_t addr, uint8_t val, void *p)
if (bitmask == 0xff && !(da2->gdcreg[LG_COMMAND] & 0x03) && (!da2->gdcreg[LG_ENABLE_SRJ])) {
for (int i = 0; i < 8; i++)
if (da2->writemask & (1 << i))
da2->vram[addr | i] = val;
DA2_vram_w(addr | i, val, da2);
} else {
for (int i = 0; i < 8; i++)
if (da2->gdcreg[LG_ENABLE_SRJ] & (1 << i))
@@ -2537,7 +2539,7 @@ da2_mmio_write(uint32_t addr, uint8_t val, void *p)
if (!(da2->gdcreg[LG_COMMAND] & 0x03) && (!da2->gdcreg[LG_ENABLE_SRJ])) {
for (int i = 0; i < 8; i++)
if (da2->writemask & (1 << i))
da2->vram[addr | i] = (((val & (1 << i)) ? 0xff : 0) & bitmask) | (da2->gdcsrc[i] & ~bitmask);
DA2_vram_w(addr | i, (((val & (1 << i)) ? 0xff : 0) & bitmask) | (da2->gdcsrc[i] & ~bitmask), da2);
//fprintf(da2->mmdbg_fp, "m1-1");
} else {
for (int i = 0; i < 8; i++)
@@ -2559,7 +2561,7 @@ da2_mmio_write(uint32_t addr, uint8_t val, void *p)
// da2_log("%02x%02x%02x%02x\n", da2->vram[addr + 0], da2->vram[addr + 1], da2->vram[addr + 2], da2->vram[addr + 3]);
} else { /* mode 3h text */
cycles -= video_timing_write_b;
da2->vram[addr] = val;
DA2_vram_w(addr, val, da2);
da2->fullchange = 2;
}
}
@@ -2622,8 +2624,8 @@ da2_mmio_gc_writeW(uint32_t addr, uint16_t val, void *p)
case 2:
for (int i = 0; i < 8; i++)
if (da2->writemask & (1 << i)) {
da2->vram[addr | i] = da2->gdcsrc[i] & 0xff;
da2->vram[(addr + 8) | i] = da2->gdcsrc[i] >> 8;
DA2_vram_w(addr | i, da2->gdcsrc[i] & 0xff, da2);
DA2_vram_w((addr + 8) | i, da2->gdcsrc[i] >> 8, da2);
}
break;
case 0:
@@ -2632,8 +2634,8 @@ da2_mmio_gc_writeW(uint32_t addr, uint16_t val, void *p)
if (bitmask == 0xffff && !(da2->gdcreg[LG_COMMAND] & 0x03) && (!da2->gdcreg[LG_ENABLE_SRJ])) {
for (int i = 0; i < 8; i++)
if (da2->writemask & (1 << i)) {
da2->vram[addr | i] = val & 0xff;
da2->vram[(addr + 8) | i] = val >> 8;
DA2_vram_w(addr | i, val & 0xff, da2);
DA2_vram_w((addr + 8) | i, val >> 8, da2);
}
} else {
for (int i = 0; i < 8; i++)
@@ -2649,9 +2651,9 @@ da2_mmio_gc_writeW(uint32_t addr, uint16_t val, void *p)
if (!(da2->gdcreg[LG_COMMAND] & 0x03) && (!da2->gdcreg[LG_ENABLE_SRJ])) {
for (int i = 0; i < 8; i++)
if (da2->writemask & (1 << i)) {
uint16_t wdata = (((val & (1 << i)) ? 0xffff : 0) & bitmask) | (da2->gdcsrc[i] & ~bitmask);
da2->vram[addr | i] = wdata & 0xff;
da2->vram[(addr + 8) | i] = wdata >> 8;
uint16_t wdata = (((val & (1 << i)) ? 0xffff : 0) & bitmask) | (da2->gdcsrc[i] & ~bitmask);
DA2_vram_w(addr | i, wdata & 0xff, da2);
DA2_vram_w((addr + 8) | i, wdata >> 8, da2);
}
} else {
for (int i = 0; i < 8; i++)