A KIM-3B is a 8K bytes memory expansion made by MOS Technology (already part of Commodore then) for the KIM-4 motherboard.

I recently acquired a good looking KIM-3B myself. Nothing new, all is already known about it. Now with photos made by myself!

A recent acquisition, the TERC (Technical Education Research Centers) KIM-1 Interface set. An educational tool to work with the KIM-1 from the 80ties.

The KIM-1 Interface permits easy access to the input/output ports on the KIM-1. Other connections such as power, ground, tape recorder input and input and output are accessible by solderless connectors.

R65 – A late seventies computer built with a KIM-1 by Rene Richarz.
An amazing showcase of how far a KIM-1 and Pascal as programming language can go!

All information on the R65 and the emulator of this computer on the github archive of Rene Richarz, a work in progress!
Including sources and full documentation.

Original Job computer built 1977-1979
The R65 computer has been built 1977-1979 by Rene Richarztogether with Rudolf Baumann, who has built his own JOB computer at the same time with similar hardware. The picture above shows the open JOB computer. The original R65 computer has not survived. The floppy disks have also not survived.

Hardware specifications of the original R65 Computer:
– 6502 8-bit microprocessor
– 1 MHz clock speed
– 17 kByte, 33 kByte, 49 kByte RAM (expanded 2 times between 1977 an 1979)
– 2 kByte graphics RAM
– 10 kByte ROM
– 40 x 16 char monochrome display
– 224 x 118 dot monochrome graphics display (switchable with char display)
– 2 floppy disk drives. Formatted capacity 199680 bytes each.
– Interfaces: Teletype, RS232, parallel printer, audio tape, golf-ball typewriter, tv

More on the R65 system here!