The MCS6501, a first and very rare member of the MOS Technology 65xx CPU family.
Introduced in 1975 with the MCS6502 to MCS6505, pin compatible with the Motorola 6800 and, after legal issues, not produced afterwards.
The (preliminary) datasheet of August 1975 is the only document where the 6501 is documented
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...