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:
KIM-1 connectors: beware the Chinese cheap variants!
The KIM-1 needs 2 edge connectors.
The specifications are: card edge; PIN: 44; 3.96mm
When you search for those, ...
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...