MiSTer FPGA Forum

With the today update of the pc engine core (and only this one) I get a black screen just after a game start and so part of the begin of each game is not shown (game working in background the time my LCD screen "sync").

I have rollback to the previous version which is just fine.
I have also try the TurboGrafx16_20201224.rbf provided by dshadoff and it works fine also.

I have 2 mister setup:
one on a 1080P screen with video_mode=8
one on a 1440P screen with video_mode=12

My mister.ini settings:
vscale_mode=1
vscale_border=0
fb_size=0
video_mode=12
vsync_adjust=2

Then for each screen I adjust according to the screen , for example for 1440P:
video_mode=12
video_mode_ntsc=12
video_mode_pal=1920 64 100 100 1440 16 20 50 200000

After doing more test I have find a way to 100% reproduce the problem:
Case1:
If I comment only the line "video_mode_pal"
video_mode=12
video_mode_ntsc=12
;video_mode_pal=1920 64 100 100 1440 16 20 50 200000
=> it is OK.

Case2:
If I comment only the line "video_mode_ntsc"
video_mode=12
;video_mode_ntsc=12
video_mode_pal=1920 64 100 100 1440 16 20 50 200000
=> it is OK.

Case3:
if I have both line uncommented
video_mode=12
video_mode_ntsc=12
video_mode_pal=1920 64 100 100 1440 16 20 50 200000
=> it is KO

Note: I have try using video_mode_pal=12 too

So something changed here that should be looked into but, in the meantime, if you are using vsync_adjust=2, there's no need to use ntsc+pal video modes that cover the same resolution (1920x1440). vsync_adjust=1 or 2 already let the cores set the refresh rate, they will ultimately ignore whatever refresh you are suggesting with your video settings.

for whatever reason if I only set video_mode=12 I get an "out of range" error for PAL games 50Hz with the genesis , snes cores. I guess constructors don't care anymore about native "50 Hz". I have try many others settings using also the edid output...

So unfortunaly I have to set "video_mode_pal=1920 64 100 100 1440 16 20 50 200000" for my Viewsonic VX2758-2KP-MHD for this specific games mode.