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duet16: fix double width chars (nw)

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This commit is contained in:
cracyc 2018-02-23 13:45:50 -06:00
parent f9caf4be4e
commit df70e74699
1 changed files with 2 additions and 2 deletions
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4
src/mame/drivers/duet16.cpp
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@ -194,8 +194,8 @@ MC6845_UPDATE_ROW(duet16_state::crtc_update_row)
u8 g2 = gvram[goffset];
u8 g1 = gvram[goffset + 0x08000];
u8 g0 = gvram[goffset + 0x10000];
u8 chr = m_cvram[coffset] & 0xff;
u8 attr = m_cvram[coffset] >> 8;
u8 chr = m_cvram[coffset & ~BIT(attr, 6)] & 0xff;
u8 data = m_chrrom->base()[(chr * 16) + ra + (BIT(m_dispctrl, 3) * 0x1000)];
if(BIT(attr, 6))
{
@ -213,7 +213,7 @@ MC6845_UPDATE_ROW(duet16_state::crtc_update_row)
attr |= 7;
data = 0xff;
}
if((i == cursor_x) && (m_screen->frame_number() & 16)) // ~3.4 Hz
if(((i & ~BIT(attr, 6)) == cursor_x) && (m_screen->frame_number() & 16)) // ~3.4 Hz
data ^= 0xff;
rgb_t fg = m_chrpal->pen_color(attr & 7);