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Added ATI Korean VGA, based on PCem patch from greatpsycho.

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This commit is contained in:
OBattler
2018-03-02 18:33:22 +01:00
parent 3351d311cd
commit 22e1b2f83a
7 changed files with 270 additions and 23 deletions
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104
src/video/vid_svga_render.c
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@@ -8,7 +8,7 @@
*
* SVGA renderers.
*
* Version: @(#)vid_svga_render.c 1.0.5 2018/02/08
* Version: @(#)vid_svga_render.c 1.0.6 2018/03/02
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -92,6 +92,9 @@ uint32_t shade[5][256] =
}
};
int dbcs_mode_enabled = 0;
void svga_render_blank(svga_t *svga)
{
int x, xx;
@@ -205,7 +208,7 @@ void svga_render_text_80(svga_t *svga)
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine + y_add])[32 + x_add];
int x, xx;
int drawcursor;
uint8_t chr, attr, dat;
uint8_t chr, attr, dat, nextchr;
uint32_t charaddr;
int fg, bg;
int xinc = (svga->seqregs[1] & 1) ? 8 : 9;
@@ -215,6 +218,85 @@ void svga_render_text_80(svga_t *svga)
drawcursor = ((svga->ma == svga->ca) && svga->con && svga->cursoron);
chr = svga->vram[(svga->ma << 1) & svga->vram_display_mask];
attr = svga->vram[((svga->ma << 1) + 1) & svga->vram_display_mask];
if(dbcs_mode_enabled && x + xinc < svga->hdisp && chr & 0x80)
{
nextchr = svga->vram[((svga->ma + 4) << 1) & svga->vram_display_mask];
if(nextchr & 0x80)
{
if (drawcursor)
{
bg = svga->pallook[svga->egapal[attr & 15]];
fg = svga->pallook[svga->egapal[attr >> 4]];
}
else
{
fg = svga->pallook[svga->egapal[attr & 15]];
bg = svga->pallook[svga->egapal[attr >> 4]];
if (attr & 0x80 && svga->attrregs[0x10] & 8)
{
bg = svga->pallook[svga->egapal[(attr >> 4) & 7]];
if (svga->blink & 16)
fg = bg;
}
}
dat = fontdatksc5601[((chr & 0x7F) << 7) | (nextchr & 0x7F)][svga->sc];
if (svga->seqregs[1] & 1)
{
for (xx = 0; xx < 8; xx++)
p[xx] = (dat & (0x80 >> xx)) ? fg : bg;
}
else
{
for (xx = 0; xx < 8; xx++)
p[xx] = (dat & (0x80 >> xx)) ? fg : bg;
if ((chr & ~0x1F) != 0xC0 || !(svga->attrregs[0x10] & 4))
p[8] = bg;
else
p[8] = (dat & 1) ? fg : bg;
}
attr = svga->vram[(((svga->ma + 4) << 1) + 1) & svga->vram_display_mask];
if (drawcursor)
{
bg = svga->pallook[svga->egapal[attr & 15]];
fg = svga->pallook[svga->egapal[attr >> 4]];
}
else
{
fg = svga->pallook[svga->egapal[attr & 15]];
bg = svga->pallook[svga->egapal[attr >> 4]];
if (attr & 0x80 && svga->attrregs[0x10] & 8)
{
bg = svga->pallook[svga->egapal[(attr >> 4) & 7]];
if (svga->blink & 16)
fg = bg;
}
}
dat = fontdatksc5601[((chr & 0x7F) << 7) | (nextchr & 0x7F)][svga->sc + 16];
if (svga->seqregs[1] & 1)
{
for (xx = 0; xx < 8; xx++)
p[xx+8] = (dat & (0x80 >> xx)) ? fg : bg;
}
else
{
for (xx = 0; xx < 8; xx++)
p[xx+9] = (dat & (0x80 >> xx)) ? fg : bg;
if ((chr & ~0x1F) != 0xC0 || !(svga->attrregs[0x10] & 4))
p[17] = bg;
else
p[17] = (dat & 1) ? fg : bg;
}
svga->ma += 8;
p += xinc * 2;
continue;
}
}
if (attr & 8) charaddr = svga->charsetb + (chr * 128);
else charaddr = svga->charseta + (chr * 128);
@@ -339,16 +421,8 @@ void svga_render_2bpp_highres(svga_t *svga)
{
uint8_t dat[2];
if (svga->sc & 1 && !(svga->crtc[0x17] & 1))
{
dat[0] = svga->vram[(svga->ma << 1) + 0x8000];
dat[1] = svga->vram[(svga->ma << 1) + 0x8001];
}
else
{
dat[0] = svga->vram[(svga->ma << 1)];
dat[1] = svga->vram[(svga->ma << 1) + 1];
}
dat[0] = svga->vram[(svga->ma << 1) + ((svga->sc & 3) & (~svga->crtc[0x17] & 3)) * 0x8000];
dat[1] = svga->vram[(svga->ma << 1) + ((svga->sc & 3) & (~svga->crtc[0x17] & 3)) * 0x8000 + 1];
svga->ma += 4;
svga->ma &= svga->vram_display_mask;
@@ -435,10 +509,8 @@ void svga_render_4bpp_highres(svga_t *svga)
uint8_t edat[4];
uint8_t dat;
if (svga->sc & 1 && !(svga->crtc[0x17] & 1))
*(uint32_t *)(&edat[0]) = *(uint32_t *)(&svga->vram[svga->ma | 0x8000]);
else
*(uint32_t *)(&edat[0]) = *(uint32_t *)(&svga->vram[svga->ma]);
*(uint32_t *)(&edat[0]) = *(uint32_t *)(&svga->vram[svga->ma | ((svga->sc & 3) & (~svga->crtc[0x17] & 3)) * 0x8000]);
svga->ma += 4;
svga->ma &= svga->vram_display_mask;