screen shot of pbuff 3.2 4K page 1421 viewsthis is a screen shot from my EPROM reader showing the content of page 1 of the PBUFF 3.2 4K EPROM. I don't actually recall where I got this 4K EPROM from because it's been ~30 years since I built it. it might have been removed during an update to 8K EPROM.
rats nest cf delay proto47 views
256TC damage in Battery area494 viewsSome minor track damage in the Battery area on the motherboard.
Looks physical rather than chemical damage.
Battery appears to have been removed before any leakage!
6875 substitute clock PCB design571 viewsnot the same as the version in EA Aug '79. completed but untested