Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Rework video memory handling to cater for open bus and VRAM address wrapping. Fixes more hangs with Trio64 and Windows 95.

Browse source
This commit is contained in:
SarahW 2017-10-22 12:41:10 +01:00
commit 39a68d757b
10 changed files with 174 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/vid_ati_mach64.c
View file

@ -468,12 +468,12 @@ void mach64_recalctimings(svga_t *svga)
break;
}
svga->vrammask = mach64->vram_mask;
svga->vram_display_mask = mach64->vram_mask;
// pclog("mach64_recalctimings : frame %i,%i disp %i,%i vsync at %i rowoffset %i pixel clock %f MA %08X\n", svga->htotal, svga->vtotal, svga->hdisp, svga->dispend, svga->vsyncstart, svga->rowoffset, svga->clock, svga->ma);
}
else
{
svga->vrammask = (mach64->regs[0x36] & 0x01) ? mach64->vram_mask : 0x3ffff;
svga->vram_display_mask = (mach64->regs[0x36] & 0x01) ? mach64->vram_mask : 0x3ffff;
}
}

21
src/vid_cl5429.c
View file

@ -350,9 +350,10 @@ void gd5429_write_linear(uint32_t addr, uint8_t val, void *p)
{
addr <<= 2;
}
addr &= 0x7fffff;
if (addr >= svga->vram_limit)
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
// if (svga_output) pclog("%08X\n", addr);
svga->changedvram[addr >> 12] = changeframecount;
@ -595,16 +596,16 @@ void gd5429_start_blit(uint32_t cpu_dat, int count, void *p)
switch (gd5429->blt.mode & 0xc0)
{
case 0x00:
src = svga->vram[gd5429->blt.src_addr & svga->vrammask];
src = svga->vram[gd5429->blt.src_addr & svga->vram_mask];
gd5429->blt.src_addr += ((gd5429->blt.mode & 0x01) ? -1 : 1);
mask = 1;
break;
case 0x40:
src = svga->vram[(gd5429->blt.src_addr & (svga->vrammask & ~7)) | (gd5429->blt.dst_addr & 7)];
src = svga->vram[(gd5429->blt.src_addr & (svga->vram_mask & ~7)) | (gd5429->blt.dst_addr & 7)];
mask = 1;
break;
case 0x80:
mask = svga->vram[gd5429->blt.src_addr & svga->vrammask] & (0x80 >> gd5429->blt.x_count);
mask = svga->vram[gd5429->blt.src_addr & svga->vram_mask] & (0x80 >> gd5429->blt.x_count);
src = mask ? gd5429->blt.fg_col : gd5429->blt.bg_col;
gd5429->blt.x_count++;
if (gd5429->blt.x_count == 8)
@ -614,16 +615,16 @@ void gd5429_start_blit(uint32_t cpu_dat, int count, void *p)
}
break;
case 0xc0:
mask = svga->vram[gd5429->blt.src_addr & svga->vrammask] & (0x80 >> (gd5429->blt.dst_addr & 7));
mask = svga->vram[gd5429->blt.src_addr & svga->vram_mask] & (0x80 >> (gd5429->blt.dst_addr & 7));
src = mask ? gd5429->blt.fg_col : gd5429->blt.bg_col;
break;
}
count--;
}
dst = svga->vram[gd5429->blt.dst_addr & svga->vrammask];
svga->changedvram[(gd5429->blt.dst_addr & svga->vrammask) >> 12] = changeframecount;
dst = svga->vram[gd5429->blt.dst_addr & svga->vram_mask];
svga->changedvram[(gd5429->blt.dst_addr & svga->vram_mask) >> 12] = changeframecount;
pclog("Blit %i,%i %06X %06X %06X %02X %02X %02X %02X ", gd5429->blt.width, gd5429->blt.height_internal, gd5429->blt.src_addr, gd5429->blt.dst_addr, gd5429->blt.src_addr & svga->vrammask, svga->vram[gd5429->blt.src_addr & svga->vrammask], 0x80 >> (gd5429->blt.dst_addr & 7), src, dst);
pclog("Blit %i,%i %06X %06X %06X %02X %02X %02X %02X ", gd5429->blt.width, gd5429->blt.height_internal, gd5429->blt.src_addr, gd5429->blt.dst_addr, gd5429->blt.src_addr & svga->vram_mask, svga->vram[gd5429->blt.src_addr & svga->vram_mask], 0x80 >> (gd5429->blt.dst_addr & 7), src, dst);
switch (gd5429->blt.rop)
{
case 0x00: dst = 0; break;
@ -647,7 +648,7 @@ void gd5429_start_blit(uint32_t cpu_dat, int count, void *p)
if ((gd5429->blt.width_backup - gd5429->blt.width) >= (gd5429->blt.mask & 7) &&
!((gd5429->blt.mode & 0x08) && !mask))
svga->vram[gd5429->blt.dst_addr & svga->vrammask] = dst;
svga->vram[gd5429->blt.dst_addr & svga->vram_mask] = dst;
gd5429->blt.dst_addr += ((gd5429->blt.mode & 0x01) ? -1 : 1);

4
src/vid_et4000w32.c
View file

@ -554,7 +554,7 @@ void et4000w32p_mmu_write(uint32_t addr, uint8_t val, void *p)
}
else
{
if ((addr&0x1fff) + et4000->mmu.base[bank] < svga->vram_limit)
if ((addr&0x1fff) + et4000->mmu.base[bank] < svga->vram_max)
{
svga->vram[(addr & 0x1fff) + et4000->mmu.base[bank]] = val;
svga->changedvram[((addr & 0x1fff) + et4000->mmu.base[bank]) >> 12] = changeframecount;
@ -614,7 +614,7 @@ uint8_t et4000w32p_mmu_read(uint32_t addr, void *p)
/*???*/
return temp;
}
if ((addr&0x1fff) + et4000->mmu.base[bank] >= svga->vram_limit)
if ((addr&0x1fff) + et4000->mmu.base[bank] >= svga->vram_max)
return 0xff;
return svga->vram[(addr&0x1fff) + et4000->mmu.base[bank]];

4
src/vid_oti067.c
View file

@ -65,13 +65,13 @@ void oti067_out(uint16_t addr, uint8_t val, void *p)
switch (oti067->index)
{
case 0xD:
svga->vrammask = (val & 0xc) ? oti067->vram_mask : 0x3ffff;
svga->vram_display_mask = (val & 0xc) ? oti067->vram_mask : 0x3ffff;
if ((val & 0x80) && oti067->vram_size == 256)
mem_mapping_disable(&svga->mapping);
else
mem_mapping_enable(&svga->mapping);
if (!(val & 0x80))
svga->vrammask = 0x3ffff;
svga->vram_display_mask = 0x3ffff;
break;
case 0x11:
svga->read_bank = (val & 0xf) * 65536;

25
src/vid_s3.c
View file

@ -818,7 +818,7 @@ void s3_out(uint16_t addr, uint8_t val, void *p)
s3->ma_ext = (s3->ma_ext & 0x1c) | ((val & 0x30) >> 4);
break;
case 0x32:
svga->vrammask = (val & 0x40) ? 0x3ffff : s3->vram_mask;
svga->vram_display_mask = (val & 0x40) ? 0x3ffff : s3->vram_mask;
break;
case 0x50:
@ -2222,6 +2222,29 @@ static void *s3_init(char *bios_fn, int chip)
s3_hwcursor_draw,
NULL);
svga->decode_mask = (4 << 20) - 1;
switch (vram)
{
case 0: /*512kb*/
svga->vram_mask = (1 << 19) - 1;
svga->vram_max = 2 << 20;
break;
case 1: /*1MB*/
/*VRAM in first MB, mirrored in 2nd MB, 3rd and 4th MBs are open bus*/
svga->vram_mask = (1 << 20) - 1;
svga->vram_max = 2 << 20;
break;
case 2: default: /*2MB*/
/*VRAM in first 2 MB, 3rd and 4th MBs are open bus*/
svga->vram_mask = (2 << 20) - 1;
svga->vram_max = 2 << 20;
break;
case 4: /*4MB*/
svga->vram_mask = (4 << 20) - 1;
svga->vram_max = 4 << 20;
break;
}
if (PCI)
svga->crtc[0x36] = 2 | (3 << 2) | (1 << 4) | (vram_sizes[vram] << 5);
else

6
src/vid_s3_virge.c
View file

@ -370,7 +370,7 @@ static void s3_virge_out(uint16_t addr, uint8_t val, void *p)
break;
case 0x32:
if ((svga->crtc[0x67] & 0xc) != 0xc)
svga->vrammask = (val & 0x40) ? 0x3ffff : ((virge->memory_size << 20) - 1);
svga->vram_display_mask = (val & 0x40) ? 0x3ffff : ((virge->memory_size << 20) - 1);
s3_virge_update_irqs(virge);
break;
@ -583,7 +583,7 @@ static void s3_virge_recalctimings(svga_t *svga)
{
svga->rowoffset = (svga->rowoffset * 3) / 4; /*Hack*/
}
svga->vrammask = (svga->crtc[0x32] & 0x40) ? 0x3ffff : ((virge->memory_size << 20) - 1);
svga->vram_display_mask = (svga->crtc[0x32] & 0x40) ? 0x3ffff : ((virge->memory_size << 20) - 1);
//pclog("VGA mode x_disp=%i dispend=%i vtotal=%i\n", svga->hdisp, svga->dispend, svga->vtotal);
}
else /*Streams mode*/
@ -631,7 +631,7 @@ static void s3_virge_recalctimings(svga_t *svga)
svga->render = svga_render_32bpp_highres;
break;
}
svga->vrammask = (virge->memory_size << 20) - 1;
svga->vram_display_mask = (virge->memory_size << 20) - 1;
}
if (((svga->miscout >> 2) & 3) == 3)

122
src/vid_svga.c
View file

@ -483,7 +483,7 @@ void svga_poll(void *p)
{
svga->hdisp_on=1;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
if (svga->firstline == 2000)
{
svga->firstline = svga->displine;
@ -561,7 +561,7 @@ void svga_poll(void *p)
svga->maback += (svga->rowoffset << 3);
if (svga->interlace)
svga->maback += (svga->rowoffset << 3);
svga->maback &= svga->vrammask;
svga->maback &= svga->vram_display_mask;
svga->ma = svga->maback;
}
else
@ -594,7 +594,7 @@ void svga_poll(void *p)
svga->fullchange = 2;
svga->blink++;
for (x = 0; x < (svga->vram_limit >> 12); x++)
for (x = 0; x < ((svga->vram_mask+1) >> 12); x++)
{
if (svga->changedvram[x])
svga->changedvram[x]--;
@ -728,8 +728,10 @@ int svga_init(svga_t *svga, void *p, int memsize,
svga->dispofftime = 1000 * (1 << TIMER_SHIFT);
svga->bpp = 8;
svga->vram = malloc(memsize);
svga->vram_limit = memsize;
svga->vrammask = memsize - 1;
svga->vram_max = memsize;
svga->vram_display_mask = memsize - 1;
svga->vram_mask = memsize - 1;
svga->decode_mask = 0x7fffff;
svga->changedvram = malloc(/*(memsize >> 12) << 1*/0x800000 >> 12);
svga->recalctimings_ex = recalctimings_ex;
svga->video_in = video_in;
@ -790,10 +792,12 @@ void svga_write(uint32_t addr, uint8_t val, void *p)
{
addr<<=2;
}
addr &= 0x7fffff;
addr &= svga->decode_mask;
if (addr >= svga->vram_limit)
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
if (svga_output) pclog("%08X (%i, %i) %02X %i %i %i %02X\n", addr, addr & 1023, addr >> 10, val, writemask2, svga->writemode, svga->chain4, svga->gdcreg[8]);
svga->changedvram[addr >> 12] = changeframecount;
@ -954,19 +958,20 @@ uint8_t svga_read(uint32_t addr, void *p)
egareads++;
// pclog("Readega %06X ",addr);
addr &= svga->banked_mask;
addr += svga->read_bank;
latch_addr = (addr << 2) & 0x7fffff;
latch_addr = (addr << 2) & svga->decode_mask;
// pclog("%05X %i %04X:%04X %02X %02X %i\n",addr,svga->chain4,CS,pc, vram[addr & 0x7fffff], vram[(addr << 2) & 0x7fffff], svga->readmode);
// pclog("%i\n", svga->readmode);
if (svga->chain4 || svga->fb_only)
{
addr &= 0x7fffff;
if (addr >= svga->vram_limit)
return 0xff;
return svga->vram[addr];
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return 0xff;
return svga->vram[addr & svga->vram_mask];
}
else if (svga->chain2_read)
{
@ -976,22 +981,27 @@ uint8_t svga_read(uint32_t addr, void *p)
}
else
addr<<=2;
addr &= svga->decode_mask;
addr &= 0x7fffff;
if (addr >= svga->vram_limit)
return 0xff;
if (latch_addr < svga->vram_limit)
if (latch_addr >= svga->vram_max)
{
svga->la = svga->lb = svga->lc = svga->ld = 0xff;
}
else
{
latch_addr &= svga->vram_mask;
svga->la = svga->vram[latch_addr];
svga->lb = svga->vram[latch_addr | 0x1];
svga->lc = svga->vram[latch_addr | 0x2];
svga->ld = svga->vram[latch_addr | 0x3];
}
else
svga->la = svga->lb = svga->lc = svga->ld = 0xff;
if (addr >= svga->vram_max)
return 0xff;
addr &= svga->vram_mask;
if (svga->readmode)
{
temp = svga->la;
@ -1009,6 +1019,7 @@ uint8_t svga_read(uint32_t addr, void *p)
return ~(temp | temp2 | temp3 | temp4);
}
//pclog("Read %02X %04X %04X\n",vram[addr|svga->readplane],addr,svga->readplane);
return svga->vram[addr | readplane];
}
@ -1043,9 +1054,10 @@ void svga_write_linear(uint32_t addr, uint8_t val, void *p)
{
addr<<=2;
}
addr &= 0x7fffff;
if (addr >= svga->vram_limit)
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
if (svga_output) pclog("%08X\n", addr);
svga->changedvram[addr >> 12]=changeframecount;
@ -1206,10 +1218,10 @@ uint8_t svga_read_linear(uint32_t addr, void *p)
if (svga->chain4 || svga->fb_only)
{
addr &= 0x7fffff;
if (addr >= svga->vram_limit)
return 0xff;
return svga->vram[addr & 0x7fffff];
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return 0xff;
return svga->vram[addr & svga->vram_mask];
}
else if (svga->chain2_read)
{
@ -1220,10 +1232,12 @@ uint8_t svga_read_linear(uint32_t addr, void *p)
else
addr<<=2;
addr &= 0x7fffff;
addr &= svga->decode_mask;
if (addr >= svga->vram_limit)
return 0xff;
if (addr >= svga->vram_max)
return 0xff;
addr &= svga->vram_mask;
svga->la = svga->vram[addr];
svga->lb = svga->vram[addr | 0x1];
@ -1296,9 +1310,10 @@ void svga_writew(uint32_t addr, uint16_t val, void *p)
if (svga_output) pclog("svga_writew: %05X ", addr);
addr = (addr & svga->banked_mask) + svga->write_bank;
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit)
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
if (svga_output) pclog("%08X (%i, %i) %04X\n", addr, addr & 1023, addr >> 10, val);
svga->changedvram[addr >> 12] = changeframecount;
*(uint16_t *)&svga->vram[addr] = val;
@ -1324,9 +1339,10 @@ void svga_writel(uint32_t addr, uint32_t val, void *p)
if (svga_output) pclog("svga_writel: %05X ", addr);
addr = (addr & svga->banked_mask) + svga->write_bank;
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit)
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
if (svga_output) pclog("%08X (%i, %i) %08X\n", addr, addr & 1023, addr >> 10, val);
svga->changedvram[addr >> 12] = changeframecount;
@ -1347,11 +1363,12 @@ uint16_t svga_readw(uint32_t addr, void *p)
// pclog("Readw %05X ", addr);
addr = (addr & svga->banked_mask) + svga->read_bank;
addr &= 0x7FFFFF;
addr &= svga->decode_mask;
// pclog("%08X %04X\n", addr, *(uint16_t *)&vram[addr]);
if (addr >= svga->vram_limit) return 0xffff;
if (addr >= svga->vram_max)
return 0xffff;
return *(uint16_t *)&svga->vram[addr];
return *(uint16_t *)&svga->vram[addr & svga->vram_mask];
}
uint32_t svga_readl(uint32_t addr, void *p)
@ -1368,11 +1385,12 @@ uint32_t svga_readl(uint32_t addr, void *p)
// pclog("Readl %05X ", addr);
addr = (addr & svga->banked_mask) + svga->read_bank;
addr &= 0x7FFFFF;
addr &= svga->decode_mask;
// pclog("%08X %08X\n", addr, *(uint32_t *)&vram[addr]);
if (addr >= svga->vram_limit) return 0xffffffff;
if (addr >= svga->vram_max)
return 0xffffffff;
return *(uint32_t *)&svga->vram[addr];
return *(uint32_t *)&svga->vram[addr & svga->vram_mask];
}
void svga_writew_linear(uint32_t addr, uint16_t val, void *p)
@ -1392,9 +1410,10 @@ void svga_writew_linear(uint32_t addr, uint16_t val, void *p)
cycles_lost += video_timing_w;
if (svga_output) pclog("Write LFBw %08X %04X\n", addr, val);
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit)
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
svga->changedvram[addr >> 12] = changeframecount;
*(uint16_t *)&svga->vram[addr] = val;
}
@ -1418,9 +1437,10 @@ void svga_writel_linear(uint32_t addr, uint32_t val, void *p)
cycles_lost += video_timing_l;
if (svga_output) pclog("Write LFBl %08X %08X\n", addr, val);
addr &= 0x7fffff;
if (addr >= svga->vram_limit)
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return;
addr &= svga->vram_mask;
svga->changedvram[addr >> 12] = changeframecount;
*(uint32_t *)&svga->vram[addr] = val;
}
@ -1437,10 +1457,11 @@ uint16_t svga_readw_linear(uint32_t addr, void *p)
cycles -= video_timing_w;
cycles_lost += video_timing_w;
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit) return 0xffff;
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return 0xffff;
return *(uint16_t *)&svga->vram[addr];
return *(uint16_t *)&svga->vram[addr & svga->vram_mask];
}
uint32_t svga_readl_linear(uint32_t addr, void *p)
@ -1455,10 +1476,11 @@ uint32_t svga_readl_linear(uint32_t addr, void *p)
cycles -= video_timing_l;
cycles_lost += video_timing_l;
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit) return 0xffffffff;
addr &= svga->decode_mask;
if (addr >= svga->vram_max)
return 0xffffffff;
return *(uint32_t *)&svga->vram[addr];
return *(uint32_t *)&svga->vram[addr & svga->vram_mask];
}

15
src/vid_svga.h
View file

@ -15,7 +15,18 @@ typedef struct svga_t
uint8_t miscout;
int vidclock;
uint32_t vram_limit;
/*The three variables below allow us to implement memory maps like that seen on a 1MB Trio64 :
0MB-1MB - VRAM
1MB-2MB - VRAM mirror
2MB-4MB - open bus
4MB-xMB - mirror of above
For the example memory map, decode_mask would be 4MB-1 (4MB address space), vram_max would be 2MB
(present video memory only responds to first 2MB), vram_mask would be 1MB-1 (video memory wraps at 1MB)
*/
uint32_t decode_mask;
uint32_t vram_max;
uint32_t vram_mask;
uint8_t la, lb, lc, ld;
@ -71,7 +82,7 @@ typedef struct svga_t
uint8_t *vram;
uint8_t *changedvram;
int vrammask;
uint32_t vram_display_mask;
uint32_t banked_mask;
uint32_t write_bank, read_bank;

88
src/vid_svga_render.c
View file

@ -51,8 +51,8 @@ void svga_render_text_40(svga_t *svga)
for (x = 0; x < svga->hdisp; x += xinc)
{
drawcursor = ((svga->ma == svga->ca) && svga->con && svga->cursoron);
chr = svga->vram[(svga->ma << 1) & svga->vrammask];
attr = svga->vram[((svga->ma << 1) + 1) & svga->vrammask];
chr = svga->vram[(svga->ma << 1) & svga->vram_display_mask];
attr = svga->vram[((svga->ma << 1) + 1) & svga->vram_display_mask];
if (attr & 8) charaddr = svga->charsetb + (chr * 128);
else charaddr = svga->charseta + (chr * 128);
@ -91,7 +91,7 @@ void svga_render_text_40(svga_t *svga)
svga->ma += 4;
p += xinc;
}
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -114,8 +114,8 @@ void svga_render_text_80(svga_t *svga)
for (x = 0; x < svga->hdisp; x += xinc)
{
drawcursor = ((svga->ma == svga->ca) && svga->con && svga->cursoron);
chr = svga->vram[(svga->ma << 1) & svga->vrammask];
attr = svga->vram[((svga->ma << 1) + 1) & svga->vrammask];
chr = svga->vram[(svga->ma << 1) & svga->vram_display_mask];
attr = svga->vram[((svga->ma << 1) + 1) & svga->vram_display_mask];
if (attr & 8) charaddr = svga->charsetb + (chr * 128);
else charaddr = svga->charseta + (chr * 128);
@ -154,7 +154,7 @@ void svga_render_text_80(svga_t *svga)
svga->ma += 4;
p += xinc;
}
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -192,7 +192,7 @@ void svga_render_2bpp_lowres(svga_t *svga)
dat[1] = svga->vram[(svga->ma << 1) + 1];
}
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
p[0] = p[1] = svga->pallook[svga->egapal[(dat[0] >> 6) & 3]];
p[2] = p[3] = svga->pallook[svga->egapal[(dat[0] >> 4) & 3]];
@ -242,7 +242,7 @@ void svga_render_2bpp_highres(svga_t *svga)
dat[1] = svga->vram[(svga->ma << 1) + 1];
}
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
p[0] = svga->pallook[svga->egapal[(dat[0] >> 6) & 3]];
p[1] = svga->pallook[svga->egapal[(dat[0] >> 4) & 3]];
@ -277,7 +277,7 @@ void svga_render_4bpp_lowres(svga_t *svga)
*(uint32_t *)(&edat[0]) = *(uint32_t *)(&svga->vram[svga->ma]);
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
dat = edatlookup[edat[0] >> 6][edat[1] >> 6] | (edatlookup[edat[2] >> 6][edat[3] >> 6] << 2);
p[0] = p[1] = svga->pallook[svga->egapal[(dat >> 4) & svga->plane_mask]];
@ -326,7 +326,7 @@ void svga_render_4bpp_highres(svga_t *svga)
else
*(uint32_t *)(&edat[0]) = *(uint32_t *)(&svga->vram[svga->ma]);
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
dat = edatlookup[edat[0] >> 6][edat[1] >> 6] | (edatlookup[edat[2] >> 6][edat[3] >> 6] << 2);
p[0] = svga->pallook[svga->egapal[(dat >> 4) & svga->plane_mask]];
@ -360,7 +360,7 @@ void svga_render_8bpp_lowres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 8)
{
uint32_t dat = *(uint32_t *)(&svga->vram[svga->ma & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[svga->ma & svga->vram_display_mask]);
p[0] = p[1] = svga->pallook[dat & 0xff];
p[2] = p[3] = svga->pallook[(dat >> 8) & 0xff];
@ -370,7 +370,7 @@ void svga_render_8bpp_lowres(svga_t *svga)
svga->ma += 4;
p += 8;
}
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -389,13 +389,13 @@ void svga_render_8bpp_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 8)
{
uint32_t dat;
dat = *(uint32_t *)(&svga->vram[svga->ma & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[svga->ma & svga->vram_display_mask]);
p[0] = svga->pallook[dat & 0xff];
p[1] = svga->pallook[(dat >> 8) & 0xff];
p[2] = svga->pallook[(dat >> 16) & 0xff];
p[3] = svga->pallook[(dat >> 24) & 0xff];
dat = *(uint32_t *)(&svga->vram[(svga->ma + 4) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + 4) & svga->vram_display_mask]);
p[4] = svga->pallook[dat & 0xff];
p[5] = svga->pallook[(dat >> 8) & 0xff];
p[6] = svga->pallook[(dat >> 16) & 0xff];
@ -404,7 +404,7 @@ void svga_render_8bpp_highres(svga_t *svga)
svga->ma += 8;
p += 8;
}
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -422,18 +422,18 @@ void svga_render_15bpp_lowres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 4)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vram_display_mask]);
p[x] = video_15to32[dat & 0xffff];
p[x + 1] = video_15to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vram_display_mask]);
p[x] = video_15to32[dat & 0xffff];
p[x + 1] = video_15to32[dat >> 16];
}
svga->ma += x << 1;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -451,24 +451,24 @@ void svga_render_15bpp_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 8)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vram_display_mask]);
p[x] = video_15to32[dat & 0xffff];
p[x + 1] = video_15to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vram_display_mask]);
p[x + 2] = video_15to32[dat & 0xffff];
p[x + 3] = video_15to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 8) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 8) & svga->vram_display_mask]);
p[x + 4] = video_15to32[dat & 0xffff];
p[x + 5] = video_15to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 12) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 12) & svga->vram_display_mask]);
p[x + 6] = video_15to32[dat & 0xffff];
p[x + 7] = video_15to32[dat >> 16];
}
svga->ma += x << 1;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -486,18 +486,18 @@ void svga_render_16bpp_lowres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 4)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vram_display_mask]);
p[x] = video_16to32[dat & 0xffff];
p[x + 1] = video_16to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vram_display_mask]);
p[x] = video_16to32[dat & 0xffff];
p[x + 1] = video_16to32[dat >> 16];
}
svga->ma += x << 1;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -515,24 +515,24 @@ void svga_render_16bpp_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 8)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1)) & svga->vram_display_mask]);
p[x] = video_16to32[dat & 0xffff];
p[x + 1] = video_16to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 4) & svga->vram_display_mask]);
p[x + 2] = video_16to32[dat & 0xffff];
p[x + 3] = video_16to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 8) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 8) & svga->vram_display_mask]);
p[x + 4] = video_16to32[dat & 0xffff];
p[x + 5] = video_16to32[dat >> 16];
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 12) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 1) + 12) & svga->vram_display_mask]);
p[x + 6] = video_16to32[dat & 0xffff];
p[x + 7] = video_16to32[dat >> 16];
}
svga->ma += x << 1;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -553,7 +553,7 @@ void svga_render_24bpp_lowres(svga_t *svga)
{
fg = svga->vram[svga->ma] | (svga->vram[svga->ma + 1] << 8) | (svga->vram[svga->ma + 2] << 16);
svga->ma += 3;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
((uint32_t *)buffer32->line[svga->displine])[(x << 1) + offset] = ((uint32_t *)buffer32->line[svga->displine])[(x << 1) + 1 + offset] = fg;
}
}
@ -573,21 +573,21 @@ void svga_render_24bpp_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x += 4)
{
uint32_t dat = *(uint32_t *)(&svga->vram[svga->ma & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[svga->ma & svga->vram_display_mask]);
p[x] = dat & 0xffffff;
dat = *(uint32_t *)(&svga->vram[(svga->ma + 3) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + 3) & svga->vram_display_mask]);
p[x + 1] = dat & 0xffffff;
dat = *(uint32_t *)(&svga->vram[(svga->ma + 6) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + 6) & svga->vram_display_mask]);
p[x + 2] = dat & 0xffffff;
dat = *(uint32_t *)(&svga->vram[(svga->ma + 9) & svga->vrammask]);
dat = *(uint32_t *)(&svga->vram[(svga->ma + 9) & svga->vram_display_mask]);
p[x + 3] = dat & 0xffffff;
svga->ma += 12;
}
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -608,7 +608,7 @@ void svga_render_32bpp_lowres(svga_t *svga)
{
fg = svga->vram[svga->ma] | (svga->vram[svga->ma + 1] << 8) | (svga->vram[svga->ma + 2] << 16);
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
((uint32_t *)buffer32->line[svga->displine])[(x << 1) + offset] = ((uint32_t *)buffer32->line[svga->displine])[(x << 1) + 1 + offset] = fg;
}
}
@ -630,11 +630,11 @@ void svga_render_32bpp_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x++)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 2)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 2)) & svga->vram_display_mask]);
p[x] = dat & 0xffffff;
}
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -652,11 +652,11 @@ void svga_render_ABGR8888_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x++)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 2)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 2)) & svga->vram_display_mask]);
p[x] = ((dat & 0xff0000) >> 16) | (dat & 0x00ff00) | ((dat & 0x0000ff) << 16);
}
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}
@ -674,10 +674,10 @@ void svga_render_RGBA8888_highres(svga_t *svga)
for (x = 0; x <= svga->hdisp; x++)
{
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 2)) & svga->vrammask]);
uint32_t dat = *(uint32_t *)(&svga->vram[(svga->ma + (x << 2)) & svga->vram_display_mask]);
p[x] = dat >> 8;
}
svga->ma += 4;
svga->ma &= svga->vrammask;
svga->ma &= svga->vram_display_mask;
}
}

2
src/vid_tvga.c
View file

@ -128,7 +128,7 @@ void tvga_out(uint16_t addr, uint8_t val, void *p)
switch (svga->crtcreg)
{
case 0x1e:
svga->vrammask = (val & 0x80) ? tvga->vram_mask : 0x3ffff;
svga->vram_display_mask = (val & 0x80) ? tvga->vram_mask : 0x3ffff;
break;
}
return;