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upd7220: don't skip every other line in mixed mode (nw)

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cracyc 2014-10-22 21:47:23 -05:00
parent bafe1596c8
commit e095956d7d
1 changed files with 2 additions and 2 deletions
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4
src/emu/video/upd7220.c
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@ -775,7 +775,7 @@ void upd7220_device::device_timer(emu_timer &timer, device_timer_id id, int para
void upd7220_device::draw_pixel(int x, int y, int xi, UINT16 tile_data)
{
UINT32 addr = ((y * m_pitch * 2) + (x >> 3)) & 0x3ffff;
UINT32 addr = ((y * (m_pitch << (m_figs.m_gd ? 0 : 1))) + (x >> 3)) & 0x3ffff;
UINT8 data = readbyte(addr);
UINT8 new_pixel = (xi & 8 ? tile_data >> 8 : tile_data & 0xff) & (0x80 >> (xi & 7));
new_pixel = new_pixel ? (0xff & (0x80 >> (x & 7))) : 0;
@ -1584,7 +1584,7 @@ void upd7220_device::update_graphics(bitmap_rgb32 &bitmap, const rectangle &clip
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
Dragon Buster (PC-98xx) contradicts with Xevious with regards of the pitch tho ... */
addr = ((sad << 1) & 0x3ffff) + (y * m_pitch * 2);
addr = ((sad << 1) & 0x3ffff) + (y * (m_pitch << (im ? 0 : 1)));
if (!m_display_cb.isnull())
draw_graphics_line(bitmap, addr, y + (im ? bsy : (bsy >> 1)), wd);