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accomm: main screen turn on (nw)

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This commit is contained in:
arbee 2017-05-25 09:06:30 -04:00
parent 1617d0ab27
commit 15be7d1d84
1 changed files with 9 additions and 2 deletions
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11
src/mame/drivers/accomm.cpp
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@ -71,15 +71,16 @@ uint32_t accomm_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap
uint8_t pixels;
static const uint32_t palette[2] = { 0, 0xffffff };
uint8_t *vram = (uint8_t *)m_vram.target();
uint32_t ula_addr = 0;
vram += 0x3000;
for (y = 0; y < 256; y++)
{
scanline = &bitmap.pix32(y);
for (x = 0; x < 640/8; x++)
for (x = 0; x < 80; x++)
{
pixels = vram[(y * (640/8)) + x];
pixels = vram[ula_addr + (x << 3)];
*scanline++ = palette[(pixels>>7)&1];
*scanline++ = palette[(pixels>>6)&1];
@ -90,6 +91,12 @@ uint32_t accomm_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap
*scanline++ = palette[(pixels>>1)&1];
*scanline++ = palette[(pixels&1)];
}
ula_addr++;
if ((y & 7) == 7)
{
ula_addr += 0x278;
}
}
return 0;