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tvi990: WIP (nw)

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This commit is contained in:
cracyc 2016-07-24 19:43:11 -05:00
parent aaa98beff2
commit f0dad1a258
1 changed files with 65 additions and 60 deletions
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27
src/mame/drivers/tv990.cpp
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@ -173,23 +173,27 @@ UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
UINT8 *fontptr;
int miny = cliprect.min_y / 16;
int maxy = cliprect.max_y / 16;
int minx = cliprect.min_x / 16;
int maxx = cliprect.max_x / 16;
for (y = miny; y <= maxy; y++)
{
// this isn't exactly right.
int i;
for(i = 0x50; i < 0x68; i++)
int i, minx, maxx;
for(i = 0; i < 8; i++)
{
if(tvi1111_regs[i] != 0x1ad5)
break;
}
curchar = &vram[tvi1111_regs[i]];
if(tvi1111_regs[i + 0x50] == 0x1ad5)
continue;
curchar = &vram[tvi1111_regs[i + 0x50]];
minx = tvi1111_regs[i + 0x30] >> 8;
maxx = tvi1111_regs[i + 0x30] & 0xff;
if(maxx > 79)
maxx = 79;
for (x = minx; x <= maxx; x++)
{
fontptr = (UINT8 *)&fontram[(((curchar[x]>>8) & 0xff) + (curchar[x] & 0x40 ? 256 : 0)) * 64];
UINT8 chr = curchar[x - minx] >> 8;
UINT8 attr = curchar[x - minx] & 0xff;
fontptr = (UINT8 *)&fontram[(chr + (attr & 0x40 ? 256 : 0)) * 64];
for (int chary = 0; chary < 16; chary++)
{
@ -197,13 +201,13 @@ UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
pixels = *fontptr++;
pixels2 = *fontptr++;
if((curchar[x] & 0x8) && (chary == 15))
if((attr & 0x8) && (chary == 15))
{
pixels = 0xff;
pixels2 = 0xff;
}
if (curchar[x] & 0x4) // inverse video?
if (attr & 0x4) // inverse video?
{
*scanline++ = invpalette[(pixels>>7)&1];
*scanline++ = invpalette[(pixels2>>7)&1];
@ -244,6 +248,7 @@ UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
}
}
}
}
return 0;
}