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Hi Josh (& all that are
interested),
I have finished the build of the JAIR 8080 board and I can get into the monitor, test some RAM, ports, examine memory, etc. I have been unable to boot CP/M however. I thinks that it must be the way I prepared the SD card of the card that I am using. I have normally used windiskimager to create disk images on SD cards. Windiskimager typically uses .img image files to create a disk image on the card. I tried using the .bin file as the source but the SD card doesn't appear bootable so I assume I did something wrong. Also what size cards are you using? Most of my cards are SDHC of 4,8 or 16gb capacities. I do have a few 1gb standard SD cards that I can try also. I have to admit that I was pretty excited to see your design come to life. It is very cool indeed. Also I realize that you are preparing for VCF-MW so it may have to wait but does any guide exist for the monitor commands. I was able to figure out most of them but I am not sure about the RAM test, unassemble, dump & SD card functions. On 8/2/2014 11:57 AM, Crusty OMO wrote:
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