This article is written by Jeff M. Nay, about his experiments to restore a KIM-1 to working order. The challenge was to address the second 6530-002 in this setup at another address then the onboard 6530-002 RRIOT.The experiment was a success, the 6530-002 is indeed in a bad state, the ROM is corrupt and it had to be replaced.The KIM-1, from a friend, was in a bad state. The repair was a success also. He was able to get this old KIM-1 working again, after only having to replace, the 6502 CPU, the 6530-002 RRIOT Chip with a Corsham 6530 Replacement board, all 8 Memory Chips and the U17 7406 inverter. Read the article here
See also:
Magazines: Compute! and Compute II
The pages om Magazines had an update.
MICRO has its own page with all Best of MICRO pfds.
Compute! and Compute II ar...
All documents in the MTU pages are now clean and higher quality, about 50 new PDFs.
I got hold a about 10 cm of MTU documents. Several I already had in PDF format, some not available yet.
I took the oppo...
Focal-65 V3D for TIM and KIM-1
Focal on the 6502, a page on this small language, originating for Digital Equipment.
A small interpreter (about 5K) for...
John Bell Engineering catalogs
Thanks to Dallas Shell I have added the 1984 and 1988 catalog to the John Bell Engineering pages.
Also a hand drawn and...