After I assembled the Omega MSX2, I found that the image kept flickering.
denjhang opened this issue · 3 comments
Can you help me find the problem? The image of my Omega MSX2 is not displayed properly, which is reflected as a fast flicker. At present, I only inserted a small number of ICs, such as Z80, 82C55, VDP, ROM, RAM, VRAM, and a small number of 7400 chips, just to narrow the scope of the problem. I tested all the clocks and found them to be normal.
I use composite output, and use NTSC's V9938, currently I press 82C55 with my hand, the image will change. When I press the VDP with my hand, the image will also change.
Maybe it is the problematic IC? Or maybe my IC socket is in poor contact with the IC?
I have found the problem, maybe the CPU socket has a bad connection, and my Omega can work normally at the moment.
It's actually a power issue. When I replaced a more powerful power supply and fixed some welding errors, the problem was completely resolved.