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Though DVI/HDMI monitors are supposed to handle 640x480, over half of the ones I have tested don't display anything. Every single one of them worked just fine a
by jecel 1y ago
Though DVI/HDMI monitors are supposed to handle 640x480, over half of the ones I have tested don't display anything. Every single one of them worked just fine at 1280x768, however, so I am changing my projects to use that.
- mercnz 1y agodid you try at 60hz? i've found a lot of monitors don't like 70mhz 720x400.. which is what bios often boots to on older computers. i'm not sure if they're running 640x480 at high refresh rate too.
- jecel 1y agoYes, I only tested the 60Hz vertical refresh options.
- WillFlux 1y agoI'm surprised by this. 1280x768 is an unusual resolution, what display timings are you using? I've found 1024x768 and 1280x720 are both well supported. I tend to use these display timings: https://projectf.io/posts/video-timings-vga-720p-1080p/ https://projectf.io/posts/video-timings-vga-720p-1080p/
- jecel 1y agoThanks for the link. I meant to write 1280x720@60Hz for 16:9 HDMI TVs/monitors but have used 1024x768 quite a bit in the past for 4:3 VGA monitors and ended up mixing the two. VIDEO_ID_CODE 4 (1280x720) works on all monitors I tested while 1 (640x480) only displays on half of them: https://github.com/nand2mario/nestang/blob/master/src/hdmi2/hdmi.sv https://github.com/nand2mario/nestang/blob/master/src/hdmi2/...