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Applied the last mainline PCem EGA-related commits.

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This commit is contained in:
OBattler
2017-07-19 20:53:23 +02:00
parent c7160d7e78
commit 790938fb94
3 changed files with 270 additions and 157 deletions
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61
src/VIDEO/vid_ega.c
View File

@@ -782,10 +782,16 @@ void ega_write(uint32_t addr, uint8_t val, void *p)
if (addr & 1)
writemask2 <<= 1;
addr &= ~1;
if (addr & 0x4000)
addr |= 1;
addr &= ~0x4000;
}
addr <<= 2;
if (addr >= ega->vram_limit)
return;
if (!(ega->gdcreg[6] & 1))
fullchange = 2;
@@ -909,10 +915,16 @@ uint8_t ega_read(uint32_t addr, void *p)
{
readplane = (readplane & 2) | (addr & 1);
addr &= ~1;
if (addr & 0x4000)
addr |= 1;
addr &= ~0x4000;
}
addr <<= 2;
if (addr >= ega->vram_limit)
return 0xff;
ega->la = ega->vram[addr];
ega->lb = ega->vram[addr | 0x1];
ega->lc = ega->vram[addr | 0x2];
@@ -975,6 +987,10 @@ void ega_init(ega_t *ega)
pallook16[c] = makecol32(0xaa, 0x55, 0);
}
ega->pallook = pallook16;
ega->vram_limit = 256 * 1024;
ega->vrammask = ega->vram_limit-1;
old_overscan_color = 0;
}
@@ -1024,6 +1040,9 @@ void *ega_standalone_init()
ega_common_defaults(ega);
ega->vram_limit = device_get_config_int("memory") * 1024;
ega->vrammask = ega->vram_limit-1;
mem_mapping_add(&ega->mapping, 0xa0000, 0x20000, ega_read, NULL, NULL, ega_write, NULL, NULL, NULL, MEM_MAPPING_EXTERNAL, ega);
timer_add(ega_poll, &ega->vidtime, TIMER_ALWAYS_ENABLED, ega);
io_sethandler(0x03c0, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
@@ -1060,6 +1079,9 @@ void *cpqega_standalone_init()
ega_common_defaults(ega);
ega->vram_limit = device_get_config_int("memory") * 1024;
ega->vrammask = ega->vram_limit-1;
mem_mapping_add(&ega->mapping, 0xa0000, 0x20000, ega_read, NULL, NULL, ega_write, NULL, NULL, NULL, MEM_MAPPING_EXTERNAL, ega);
timer_add(ega_poll, &ega->vidtime, TIMER_ALWAYS_ENABLED, ega);
io_sethandler(0x03c0, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
@@ -1096,6 +1118,9 @@ void *sega_standalone_init()
ega_common_defaults(ega);
ega->vram_limit = device_get_config_int("memory") * 1024;
ega->vrammask = ega->vram_limit-1;
mem_mapping_add(&ega->mapping, 0xa0000, 0x20000, ega_read, NULL, NULL, ega_write, NULL, NULL, NULL, MEM_MAPPING_EXTERNAL, ega);
timer_add(ega_poll, &ega->vidtime, TIMER_ALWAYS_ENABLED, ega);
io_sethandler(0x03c0, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
@@ -1238,6 +1263,30 @@ void ega_speed_changed(void *p)
ega_recalctimings(ega);
}
static device_config_t ega_config[] =
{
{
"memory", "Memory size", CONFIG_SELECTION, "", 256,
{
{
"64 kB", 64
},
{
"128 kB", 128
},
{
"256 kB", 256
},
{
""
}
}
},
{
"", "", -1
}
};
device_t ega_device =
{
"EGA",
@@ -1247,7 +1296,8 @@ device_t ega_device =
ega_standalone_available,
ega_speed_changed,
NULL,
NULL
NULL,
ega_config
};
device_t cpqega_device =
@@ -1259,7 +1309,8 @@ device_t cpqega_device =
cpqega_standalone_available,
ega_speed_changed,
NULL,
NULL
NULL,
ega_config
};
device_t sega_device =
@@ -1271,7 +1322,8 @@ device_t sega_device =
sega_standalone_available,
ega_speed_changed,
NULL,
NULL
NULL,
ega_config
};
device_t jega_device =
@@ -1283,5 +1335,6 @@ device_t jega_device =
sega_standalone_available,
ega_speed_changed,
NULL,
NULL
NULL,
ega_config
};

2
src/VIDEO/vid_ega.h
View File

@@ -87,6 +87,8 @@ typedef struct ega_t
uint8_t *vram;
int vrammask;
uint32_t vram_limit;
int video_res_x, video_res_y, video_bpp;
uint8_t RMOD1, RMOD2, RDAGS, RDFFB, RDFSB, RDFAP, RPESL, RPULP, RPSSC, RPSSU, RPSSL;

364
src/VIDEO/vid_ega_render.c
View File

@@ -66,85 +66,84 @@ void ega_render_blank(ega_t *ega)
}
void ega_render_text_standard(ega_t *ega, int drawcursor)
{
{
int x, xx;
int x_add = (enable_overscan) ? 8 : 0;
int dl = ega_display_line(ega);
uint8_t chr, dat, attr;
uint32_t charaddr;
int x, xx;
uint32_t fg, bg;
for (x = 0; x < ega->hdisp; x++)
{
int drawcursor = ((ega->ma == ega->ca) && ega->con && ega->cursoron);
uint8_t chr = ega->vram[(ega->ma << 1) & ega->vrammask];
uint8_t attr = ega->vram[((ega->ma << 1) + 1) & ega->vrammask];
uint8_t dat;
uint32_t fg, bg;
uint32_t charaddr;
if (attr & 8)
charaddr = ega->charsetb + (chr * 128);
else
charaddr = ega->charseta + (chr * 128);
if (fullchange)
{
for (x = 0; x < ega->hdisp; x++)
{
drawcursor = ((ega->ma == ega->ca) && ega->con && ega->cursoron);
chr = ega->vram[(ega->ma << 1) & ega->vrammask];
attr = ega->vram[((ega->ma << 1) + 1) & ega->vrammask];
if (drawcursor)
{
bg = ega->pallook[ega->egapal[attr & 15]];
fg = ega->pallook[ega->egapal[attr >> 4]];
}
else
{
fg = ega->pallook[ega->egapal[attr & 15]];
bg = ega->pallook[ega->egapal[attr >> 4]];
if (attr & 0x80 && ega->attrregs[0x10] & 8)
{
bg = ega->pallook[ega->egapal[(attr >> 4) & 7]];
if (ega->blink & 16)
fg = bg;
}
}
if (attr & 8) charaddr = ega->charsetb + (chr * 128);
else charaddr = ega->charseta + (chr * 128);
if (drawcursor)
{
bg = ega->pallook[ega->egapal[attr & 15]];
fg = ega->pallook[ega->egapal[attr >> 4]];
}
else
{
fg = ega->pallook[ega->egapal[attr & 15]];
bg = ega->pallook[ega->egapal[attr >> 4]];
if (attr & 0x80 && ega->attrregs[0x10] & 8)
{
bg = ega->pallook[ega->egapal[(attr >> 4) & 7]];
if (ega->blink & 16)
fg = bg;
}
}
dat = ega->vram[charaddr + (ega->sc << 2)];
if (ega->seqregs[1] & 8)
{
if (ega->seqregs[1] & 1)
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[(((x << 4) + 32 + (xx << 1)) & 2047) + x_add] =
((uint32_t *)buffer32->line[dl])[(((x << 4) + 33 + (xx << 1)) & 2047) + x_add] = (dat & (0x80 >> xx)) ? fg : bg;
}
else
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[(((x * 18) + 32 + (xx << 1)) & 2047) + x_add] =
((uint32_t *)buffer32->line[dl])[(((x * 18) + 33 + (xx << 1)) & 2047) + x_add] = (dat & (0x80 >> xx)) ? fg : bg;
if ((chr & ~0x1f) != 0xc0 || !(ega->attrregs[0x10] & 4))
((uint32_t *)buffer32->line[dl])[(((x * 18) + 32 + 16) & 2047) + x_add] =
((uint32_t *)buffer32->line[dl])[(((x * 18) + 32 + 17) & 2047) + x_add] = bg;
else
((uint32_t *)buffer32->line[dl])[(((x * 18) + 32 + 16) & 2047) + x_add] =
((uint32_t *)buffer32->line[dl])[(((x * 18) + 32 + 17) & 2047) + x_add] = (dat & 1) ? fg : bg;
}
}
else
{
if (ega->seqregs[1] & 1)
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[(((x << 3) + 32 + xx) & 2047) + x_add] = (dat & (0x80 >> xx)) ? fg : bg;
}
else
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[(((x * 9) + 32 + xx) & 2047) + x_add] = (dat & (0x80 >> xx)) ? fg : bg;
if ((chr & ~0x1f) != 0xc0 || !(ega->attrregs[0x10] & 4))
((uint32_t *)buffer32->line[dl])[(((x * 9) + 32 + 8) & 2047) + x_add] = bg;
else
((uint32_t *)buffer32->line[dl])[(((x * 9) + 32 + 8) & 2047) + x_add] = (dat & 1) ? fg : bg;
}
}
ega->ma += 4;
ega->ma &= ega->vrammask;
}
}
dat = ega->vram[charaddr + (ega->sc << 2)];
if (ega->seqregs[1] & 8)
{
if (ega->seqregs[1] & 1)
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[((x << 4) + 32 + (xx << 1) + x_add) & 2047] =
((uint32_t *)buffer32->line[dl])[((x << 4) + 33 + (xx << 1) + x_add) & 2047] = (dat & (0x80 >> xx)) ? fg : bg;
}
else
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[((x * 18) + 32 + (xx << 1) + x_add) & 2047] =
((uint32_t *)buffer32->line[dl])[((x * 18) + 33 + (xx << 1) + x_add) & 2047] = (dat & (0x80 >> xx)) ? fg : bg;
if ((chr & ~0x1f) != 0xc0 || !(ega->attrregs[0x10] & 4))
((uint32_t *)buffer32->line[dl])[((x * 18) + 32 + 16 + x_add) & 2047] =
((uint32_t *)buffer32->line[dl])[((x * 18) + 32 + 17 + x_add) & 2047] = bg;
else
((uint32_t *)buffer32->line[dl])[((x * 18) + 32 + 16 + x_add) & 2047] =
((uint32_t *)buffer32->line[dl])[((x * 18) + 32 + 17 + x_add) & 2047] = (dat & 1) ? fg : bg;
}
}
else
{
if (ega->seqregs[1] & 1)
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[((x << 3) + 32 + xx + x_add) & 2047] = (dat & (0x80 >> xx)) ? fg : bg;
}
else
{
for (xx = 0; xx < 8; xx++)
((uint32_t *)buffer32->line[dl])[((x * 9) + 32 + xx + x_add) & 2047] = (dat & (0x80 >> xx)) ? fg : bg;
if ((chr & ~0x1f) != 0xc0 || !(ega->attrregs[0x10] & 4))
((uint32_t *)buffer32->line[dl])[((x * 9) + 32 + 8 + x_add) & 2047] = bg;
else
((uint32_t *)buffer32->line[dl])[((x * 9) + 32 + 8 + x_add) & 2047] = (dat & 1) ? fg : bg;
}
}
ega->ma += 4;
ega->ma &= ega->vrammask;
}
}
static __inline int is_kanji1(uint8_t chr)
@@ -381,24 +380,35 @@ void ega_render_2bpp_lowres(ega_t *ega)
int x_add = (enable_overscan) ? 8 : 0;
int dl = ega_display_line(ega);
int x;
int offset;
uint8_t edat[4];
int offset = ((8 - ega->scrollcache) << 1) + 16;
for (x = 0; x <= ega->hdisp; x++)
{
uint8_t edat[2];
uint32_t addr = ega->ma;
if (!(ega->crtc[0x17] & 0x40))
{
addr = (addr << 1) & ega->vrammask;
addr &= ~7;
if ((ega->crtc[0x17] & 0x20) && (ega->ma & 0x20000))
addr |= 4;
if (!(ega->crtc[0x17] & 0x20) && (ega->ma & 0x8000))
addr |= 4;
}
if (!(ega->crtc[0x17] & 0x01))
addr = (addr & ~0x8000) | ((ega->sc & 1) ? 0x8000 : 0);
if (!(ega->crtc[0x17] & 0x02))
addr = (addr & ~0x10000) | ((ega->sc & 2) ? 0x10000 : 0);
offset = ((8 - ega->scrollcache) << 1) + 16;
for (x = 0; x <= ega->hdisp; x++)
{
if (ega->sc & 1 && !(ega->crtc[0x17] & 1))
{
edat[0] = ega->vram[(ega->ma << 1) + 0x8000];
edat[1] = ega->vram[(ega->ma << 1) + 0x8001];
}
else
{
edat[0] = ega->vram[(ega->ma << 1)];
edat[1] = ega->vram[(ega->ma << 1) + 1];
}
ega->ma += 4;
ega->ma &= ega->vrammask;
edat[0] = ega->vram[addr];
edat[1] = ega->vram[addr | 0x1];
if (ega->seqregs[1] & 4)
ega->ma += 2;
else
ega->ma += 4;
ega->ma &= ega->vrammask;
((uint32_t *)buffer32->line[dl])[(x << 4) + 14 + offset + x_add]= ((uint32_t *)buffer32->line[dl])[(x << 4) + 15 + offset + x_add] = ega->pallook[ega->egapal[edat[1] & 3]];
((uint32_t *)buffer32->line[dl])[(x << 4) + 12 + offset + x_add] = ((uint32_t *)buffer32->line[dl])[(x << 4) + 13 + offset + x_add] = ega->pallook[ega->egapal[(edat[1] >> 2) & 3]];
@@ -416,24 +426,35 @@ void ega_render_2bpp_highres(ega_t *ega)
int x_add = (enable_overscan) ? 8 : 0;
int dl = ega_display_line(ega);
int x;
int offset;
uint8_t edat[4];
int offset = ((8 - ega->scrollcache) << 1) + 16;
for (x = 0; x <= ega->hdisp; x++)
{
uint8_t edat[2];
uint32_t addr = ega->ma;
if (!(ega->crtc[0x17] & 0x40))
{
addr = (addr << 1) & ega->vrammask;
addr &= ~7;
if ((ega->crtc[0x17] & 0x20) && (ega->ma & 0x20000))
addr |= 4;
if (!(ega->crtc[0x17] & 0x20) && (ega->ma & 0x8000))
addr |= 4;
}
if (!(ega->crtc[0x17] & 0x01))
addr = (addr & ~0x8000) | ((ega->sc & 1) ? 0x8000 : 0);
if (!(ega->crtc[0x17] & 0x02))
addr = (addr & ~0x10000) | ((ega->sc & 2) ? 0x10000 : 0);
offset = ((8 - ega->scrollcache) << 1) + 16;
for (x = 0; x <= ega->hdisp; x++)
{
if (ega->sc & 1 && !(ega->crtc[0x17] & 1))
{
edat[0] = ega->vram[(ega->ma << 1) + 0x8000];
edat[1] = ega->vram[(ega->ma << 1) + 0x8001];
}
else
{
edat[0] = ega->vram[(ega->ma << 1)];
edat[1] = ega->vram[(ega->ma << 1) + 1];
}
ega->ma += 4;
ega->ma &= ega->vrammask;
edat[0] = ega->vram[addr];
edat[1] = ega->vram[addr | 0x1];
if (ega->seqregs[1] & 4)
ega->ma += 2;
else
ega->ma += 4;
ega->ma &= ega->vrammask;
((uint32_t *)buffer32->line[dl])[(x << 4) + 7 + offset + x_add] = ega->pallook[ega->egapal[edat[1] & 3]];
((uint32_t *)buffer32->line[dl])[(x << 4) + 6 + offset + x_add] = ega->pallook[ega->egapal[(edat[1] >> 2) & 3]];
@@ -450,30 +471,49 @@ void ega_render_4bpp_lowres(ega_t *ega)
{
int x_add = (enable_overscan) ? 8 : 0;
int dl = ega_display_line(ega);
uint8_t dat;
int x;
int offset;
uint8_t edat[4];
int offset = ((8 - ega->scrollcache) << 1) + 16;
for (x = 0; x <= ega->hdisp; x++)
{
uint8_t edat[4];
uint8_t dat;
uint32_t addr = ega->ma;
int oddeven = 0;
if (!(ega->crtc[0x17] & 0x40))
{
addr = (addr << 1) & ega->vrammask;
if (ega->seqregs[1] & 4)
oddeven = (addr & 4) ? 1 : 0;
addr &= ~7;
if ((ega->crtc[0x17] & 0x20) && (ega->ma & 0x20000))
addr |= 4;
if (!(ega->crtc[0x17] & 0x20) && (ega->ma & 0x8000))
addr |= 4;
}
if (!(ega->crtc[0x17] & 0x01))
addr = (addr & ~0x8000) | ((ega->sc & 1) ? 0x8000 : 0);
if (!(ega->crtc[0x17] & 0x02))
addr = (addr & ~0x10000) | ((ega->sc & 2) ? 0x10000 : 0);
if (ega->seqregs[1] & 4)
{
edat[0] = ega->vram[addr | oddeven];
edat[2] = ega->vram[addr | oddeven | 0x2];
edat[1] = edat[3] = 0;
ega->ma += 2;
}
else
{
edat[0] = ega->vram[addr];
edat[1] = ega->vram[addr | 0x1];
edat[2] = ega->vram[addr | 0x2];
edat[3] = ega->vram[addr | 0x3];
ega->ma += 4;
}
ega->ma &= ega->vrammask;
offset = ((8 - ega->scrollcache) << 1) + 16;
for (x = 0; x <= ega->hdisp; x++)
{
if (ega->sc & 1 && !(ega->crtc[0x17] & 1))
{
edat[0] = ega->vram[ega->ma | 0x8000];
edat[1] = ega->vram[ega->ma | 0x8001];
edat[2] = ega->vram[ega->ma | 0x8002];
edat[3] = ega->vram[ega->ma | 0x8003];
}
else
{
edat[0] = ega->vram[ega->ma];
edat[1] = ega->vram[ega->ma | 0x1];
edat[2] = ega->vram[ega->ma | 0x2];
edat[3] = ega->vram[ega->ma | 0x3];
}
ega->ma += 4;
ega->ma &= ega->vrammask;
dat = edatlookup[edat[0] & 3][edat[1] & 3] | (edatlookup[edat[2] & 3][edat[3] & 3] << 2);
((uint32_t *)buffer32->line[dl])[(x << 4) + 14 + offset + x_add] = ((uint32_t *)buffer32->line[dl])[(x << 4) + 15 + offset + x_add] = ega->pallook[ega->egapal[(dat & 0xf) & ega->attrregs[0x12]]];
((uint32_t *)buffer32->line[dl])[(x << 4) + 12 + offset + x_add] = ((uint32_t *)buffer32->line[dl])[(x << 4) + 13 + offset + x_add] = ega->pallook[ega->egapal[(dat >> 4) & ega->attrregs[0x12]]];
@@ -493,30 +533,48 @@ void ega_render_4bpp_highres(ega_t *ega)
{
int x_add = (enable_overscan) ? 8 : 0;
int dl = ega_display_line(ega);
uint8_t dat;
int x;
int offset;
uint8_t edat[4];
int offset = (8 - ega->scrollcache) + 24;
for (x = 0; x <= ega->hdisp; x++)
{
uint8_t edat[4];
uint8_t dat;
uint32_t addr = ega->ma;
int oddeven = 0;
offset = (8 - ega->scrollcache) + 24;
for (x = 0; x <= ega->hdisp; x++)
{
if (ega->sc & 1 && !(ega->crtc[0x17] & 1))
{
edat[0] = ega->vram[ega->ma | 0x8000];
edat[1] = ega->vram[ega->ma | 0x8001];
edat[2] = ega->vram[ega->ma | 0x8002];
edat[3] = ega->vram[ega->ma | 0x8003];
}
else
{
edat[0] = ega->vram[ega->ma];
edat[1] = ega->vram[ega->ma | 0x1];
edat[2] = ega->vram[ega->ma | 0x2];
edat[3] = ega->vram[ega->ma | 0x3];
}
ega->ma += 4;
ega->ma &= ega->vrammask;
if (!(ega->crtc[0x17] & 0x40))
{
addr = (addr << 1) & ega->vrammask;
if (ega->seqregs[1] & 4)
oddeven = (addr & 4) ? 1 : 0;
addr &= ~7;
if ((ega->crtc[0x17] & 0x20) && (ega->ma & 0x20000))
addr |= 4;
if (!(ega->crtc[0x17] & 0x20) && (ega->ma & 0x8000))
addr |= 4;
}
if (!(ega->crtc[0x17] & 0x01))
addr = (addr & ~0x8000) | ((ega->sc & 1) ? 0x8000 : 0);
if (!(ega->crtc[0x17] & 0x02))
addr = (addr & ~0x10000) | ((ega->sc & 2) ? 0x10000 : 0);
if (ega->seqregs[1] & 4)
{
edat[0] = ega->vram[addr | oddeven];
edat[2] = ega->vram[addr | oddeven | 0x2];
edat[1] = edat[3] = 0;
ega->ma += 2;
}
else
{
edat[0] = ega->vram[addr];
edat[1] = ega->vram[addr | 0x1];
edat[2] = ega->vram[addr | 0x2];
edat[3] = ega->vram[addr | 0x3];
ega->ma += 4;
}
ega->ma &= ega->vrammask;
dat = edatlookup[edat[0] & 3][edat[1] & 3] | (edatlookup[edat[2] & 3][edat[3] & 3] << 2);
((uint32_t *)buffer32->line[dl])[(x << 3) + 7 + offset + x_add] = ega->pallook[ega->egapal[(dat & 0xf) & ega->attrregs[0x12]]];