For a long time I have been looking at the photos of this, o so simple 6502 trainer, to see how it works and be able to build one myself.
Now that the circuit diagram has become available I have added a page on the OSI 300 on what I have found out about this simple 6502 system: photo’s, manual and circuit.
See also:
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...
New KIM-1 info and more
Added again some KIM-1 information!
MDT 650 photos (John Feagans)
Scans from the Commodore International Historica...
KIM-1 Simulator simple demo
To test my new HDMI 4K USB Video Capture I made two videos. Simulator running on one notebook, the other notebook with t...