Written by 2021 by Joerg Walke, visit his webiste for the most actual version!
The Junior Computer ][ is an expanded version of the original Junior Computer. To make it more useful, I’ve equipped it with 32KB RAM, 8KB ROM and an onboard RS232 serial interface for connecting a terminal or a printer. For the use with a terminal, I also wrote an extended monitor program thats included in the bigger ROM. The development of the Junior Computer ][ is still in progress, so some other features will find its way to the mainboard.
On the picture above, you can see the actual rev. 2 board of the Junior Computer ][.The new revision 3 board has arrived!
…all components assembled and soldered
…and it works fine!
See also:
Cassette reading problems KIM-1
Another article from the Dutch KIM Kenner magazine: RECORDING PROGRAMS WITH THE KIM-1 AND THE CASSETTE RECORDEROrigin...
Another article from the Dutch KIM Kenner magazine: RECORDING PROGRAMS WITH THE KIM-1 AND THE CASSETTE RECORDEROrigin...
Unilab Three Chips clone
Stephen Crozier made a clone of the Unilab Three Chips main board.
Stephen Crozier made a clone of the Unilab Three Chips main board.
Das EMUF Sonderheft 2
Thanks to Mathias Ohlerich for the scan of the Sonderheft 2
Thanks to Mathias Ohlerich for the scan of the Sonderheft 2
MOS KIM-1 Reproduction documents added
Dave Williams, who designed and builds the MOS KIM-1 Reproductions, sent me three worthwhile documents: - Schematic - ...
Dave Williams, who designed and builds the MOS KIM-1 Reproductions, sent me three worthwhile documents: - Schematic - ...