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fmtowns: Fix scrolling in 16-color mode

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r09 2017-11-13 23:28:07 +01:00 committed by GitHub
parent 65c4ad8e90
commit dd87f81e1c
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1 changed files with 2 additions and 2 deletions
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4
src/mame/video/fmtowns.cpp
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@ -1266,7 +1266,7 @@ void towns_state::towns_crtc_draw_scan_layer_16(bitmap_rgb32 &bitmap,const recta
if(!(m_video.towns_video_reg[0] & 0x10))
return;
if(!(m_video.towns_crtc_reg[28] & 0x10))
off += m_video.towns_crtc_reg[21]; // initial offset
off += m_video.towns_crtc_reg[21] << 2; // initial offset
else
{
scroll = ((m_video.towns_crtc_reg[21] & 0xfc00)<<2) | (((m_video.towns_crtc_reg[21] & 0x3ff)<<2));
@ -1278,7 +1278,7 @@ void towns_state::towns_crtc_draw_scan_layer_16(bitmap_rgb32 &bitmap,const recta
else
{
if(!(m_video.towns_crtc_reg[28] & 0x20))
off += m_video.towns_crtc_reg[17]; // initial offset
off += m_video.towns_crtc_reg[17] << 2; // initial offset
else
{
scroll = ((m_video.towns_crtc_reg[17] & 0xfc00)<<2) | (((m_video.towns_crtc_reg[17] & 0x3ff)<<2));