Hi Josh,
I figured it out. I was making it more difficult that it was. I
finally realized the boot ROM was looking for DISK-A.BIN even thought
the README txt file told me just that. I just copied that file to the
card & now it boots into CP/M. It appears that the only file in the
directory is WOW.COM. I realize the firmware/software components of
this project are still in development but what would be the easiest
method of adding files to the DISK-A.BIN image file? Sorry if the
questions are obvious but I am better with hardware side of things
versus the software side.
Regards,
Jeff
On 9/1/2014 10:42 AM, Jeff Galinat wrote:
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.
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