6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2026-04-21 17:16:44 +00:00
Code Issues Projects Releases Wiki Activity

Disable interlace support.

Browse Source
This commit is contained in:
Thomas Harte
2025-09-15 23:53:36 -04:00
parent 2162822cec
commit ff69709926
1 changed files with 7 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Components/6845/CRTC6845.hpp
+7 -5
View File
@@ -115,11 +115,13 @@ public:
case 6: layout_.vertical.displayed = value & 0x7f; break;
case 7: layout_.vertical.start_sync = value & 0x7f; break;
case 8:
switch(value & 3) {
default: layout_.interlace_mode_ = InterlaceMode::Off; break;
case 0b01: layout_.interlace_mode_ = InterlaceMode::InterlaceSync; break;
case 0b11: layout_.interlace_mode_ = InterlaceMode::InterlaceSyncAndVideo; break;
}
// TODO: an error elsewhere appears to cause modes other than InterlaceMode::Off never to hit
// vertical sync.
// switch(value & 3) {
// default: layout_.interlace_mode_ = InterlaceMode::Off; break;
// case 0b01: layout_.interlace_mode_ = InterlaceMode::InterlaceSync; break;
// case 0b11: layout_.interlace_mode_ = InterlaceMode::InterlaceSyncAndVideo; break;
// }
// Per CPC documentation, skew doesn't work on a "type 1 or 2", i.e. an MC6845 or a UM6845R.
if(personality != Personality::UM6845R && personality != Personality::MC6845) {