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Attempt to fix Xevious ...

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This commit is contained in:
Angelo Salese 2014-02-18 04:44:31 +00:00
parent a7eb357751
commit c1aaceeab7
1 changed files with 7 additions and 4 deletions
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11
src/emu/video/upd7220.c
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@ -1573,7 +1573,7 @@ void upd7220_device::draw_graphics_line(bitmap_rgb32 &bitmap, UINT32 addr, int y
{
int sx;
for (sx = 0; sx < m_pitch * 2; sx++)
for (sx = 0; sx < 80; sx++)
{
if((sx << 3) < m_aw * 16 && y < m_al)
m_display_cb(this, bitmap, y, sx << 3, addr);
@ -1602,15 +1602,18 @@ void upd7220_device::update_graphics(bitmap_rgb32 &bitmap, const rectangle &clip
{
//get_graphics_partition(area, &sad, &len, &im, &wd);
if(area >= 3) // TODO: correct? Quarth (PC-98xx) definitely draws with area 2.
if(area >= 3) // TODO: most likely to be correct, Quarth (PC-98xx) definitely draws with area 2. We might see an area 3 someday ...
break;
for (y = 0; y < len; y++)
{
addr = ((sad << 1) & 0x3ffff) + (y * m_pitch * 2);
/* TODO: again correct?
Quarth (PC-98xx) doesn't seem to use pitch here and it definitely wants bsy to be /2 to make scrolling to work.
Xevious (PC-98xx) wants the pitch to be fixed at 80, and wants bsy to be /1 */
addr = ((sad << 1) & 0x3ffff) + (y * 80);
if (m_display_cb)
draw_graphics_line(bitmap, addr, y + bsy/2, wd);
draw_graphics_line(bitmap, addr, y + bsy/((m_pitch == 40)+1), wd);
}
}
else