@mitu Thank you, youve made a grown man very happy

im not sure how this interacts with retroarch overrides as no video mode was selected in the override .cfgs the log file referenced but all i did was updated retroarch from binary to latest 1.16.0, loaded the same rom and i got a msg on lower left configuration override loaded but can change video mode from the runcommand launch menu and it now works.

i can now can select 50zh video mode and get smooth scrolling on PAL and on Amstrad CPC :)

@windg
The last time a had retropie 4.8 going on the pi4 it was great. kept having trouble with wireless keyboard, but once that i got it going once, I just reset the controller config, and then i removed the card. but every since, i try reinstalling retropie 4.8 from the image and also tried from the Gz file and still noting, it started to load, but then things go blank. So, i finally but the old version back on and it booted great, just had to update to the latest new version on the Pi4