Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 08:49:55 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Properly document address deconding for GFX roms in cardline.

Browse Source 
[Couriersud]
This commit is contained in:
couriersud 2015-04-24 01:10:37 +02:00
parent 5a4269232b
commit e08ddc8cad
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/mame/drivers/cardline.c
View File

@ -97,7 +97,15 @@ MC6845_UPDATE_ROW( cardline_state::crtc_update_row )
gfx_ofs = 0;
if(m_video&2)
// bits 0 and 1 seem to be chip select lines. None of those selected
// most likely would put the output lines into a floating (threestate)
// state. The next statement doesn't add functioality but documents
// how this works.
if(m_video & 1)
gfx_ofs = 0;
if(m_video & 2)
gfx_ofs = 0x1000;
gfx = memregion("gfx1")->base();