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lift a common subexpression (nw)

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This commit is contained in:
Vas Crabb 2015-11-01 17:04:17 +11:00
parent 6382e5d905
commit f792d667a1
1 changed files with 9 additions and 9 deletions
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18
src/mame/machine/osborne1.c
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@ -407,26 +407,26 @@ TIMER_CALLBACK_MEMBER(osborne1_state::video_callback)
{
UINT16 const offs = row | ((col + x) & 0x7F);
UINT8 const chr = m_ram->pointer()[0xF000 + offs];
UINT8 const dim = m_ram->pointer()[0x10000 + offs] & 0x80;
UINT8 const clr = (m_ram->pointer()[0x10000 + offs] & 0x80) ? 2 : 1;
UINT8 const gfx = ((chr & 0x80) && (ra == 9)) ? 0xFF : m_p_chargen[(ra << 7) | (chr & 0x7F)];
// Display a scanline of a character
*p++ = BIT(gfx, 7) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 7) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 6) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 6) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 5) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 5) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 4) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 4) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 3) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 3) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 2) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 2) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 1) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 1) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
*p++ = BIT(gfx, 0) ? ( dim ? 2 : 1 ) : 0;
*p++ = BIT(gfx, 0) ? clr : 0;
if (!hires) { p[0] = p[-1]; p++; }
}
}