Sprinter/mame
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge pull request #2799 from rzero9/patch-1

Browse Source 
fmtowns: Fix scrolling in 16-color mode [r09]
This commit is contained in:
mahlemiut 2017-11-14 12:21:29 +13:00 committed by GitHub
commit a37b95a7ce
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/mame/video/fmtowns.cpp
View File

@ -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)) if(!(m_video.towns_video_reg[0] & 0x10))
return; return;
if(!(m_video.towns_crtc_reg[28] & 0x10)) 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 else
{ {
scroll = ((m_video.towns_crtc_reg[21] & 0xfc00)<<2) | (((m_video.towns_crtc_reg[21] & 0x3ff)<<2)); 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 else
{ {
if(!(m_video.towns_crtc_reg[28] & 0x20)) 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 else
{ {
scroll = ((m_video.towns_crtc_reg[17] & 0xfc00)<<2) | (((m_video.towns_crtc_reg[17] & 0x3ff)<<2)); scroll = ((m_video.towns_crtc_reg[17] & 0xfc00)<<2) | (((m_video.towns_crtc_reg[17] & 0x3ff)<<2));