Open Frame h8 issues

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Ronald West

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Jun 11, 2026, 11:08:22 PM (6 hours ago) Jun 11
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I had a few boards left over from when i had an H:. 8080 Processor, Cassette/Serial board and a 8k memory board i purchased from ebay. 

I found a Less Bird front panel board that says v11, 2009 and had boards manufactured, Populated one and have been trying to get it work. Seems like the processor is running and I can see some waveforms on the board but the display nor keyboard is apparently working. Any one had any issues with these (front panels)?

attached is a picture with the assembly powered up. One thing, the 8080 board has the xcon8 mods on it and the ROM is the XCON8 ROM. the disable ROM line is tied high so don't think that is causing any issues. also the schematic is a bit different than the original so not sure if that is messing with my troubleshooting.

Ron
Preview attachment 20260610_225320.jpgPreview attachment 20260610_225320.jpg 3.3 MB.url
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