The Junior Computer hardware and software is described in detail in the books and articles, see there for details.
On the following pages the essential information about the different parts are described: circuit diagrams, articles, ROM source and binaries etc.
It starts with a simple SBC: the base Junior. And it ends with a complete floppy disk and video based computer: the full Junior.
- Elektor Junior : base system
- Power Supply Unit
- Mini EPROM card and ESS511 ROM
- Elektor bus
- Elekterminal
- Junior Interface card
- 16/64K dynamic RAM card
- EPROMmer EPS82010
- Universal Memory card, 83014
- VDU Videocard
- KB9 Basic
- OS65D
- Floppy disk interface
- Assemblers used in sources
Note that the Junior has the Elektor bus and could use a lot of the cards developed later for the EC65/Octobus, but memory layout differences may require adaptations. Study articles and books, lots and lots of subtle changes required in every step.
Thanks to many contributors, for ROMs and information! Philippe Roca, Philippe Roehr, Keith Robinson, Guus Assmann, the people at forum.system-cfg.com , VzEkC e. V. (classic-computing.de), Bram Prosman, Ian Lockhart. If forget someone, I want to thank you!
Memory layout
An attempt to show the meory map of a fully enhanced Junior system.
See also:
User wikokim on the forum.classic-computing.de bought this system in 1978/79. And published the following documents and ...
This page is about the operation and use of the Rockwell Single-Chip RSC-FORTH system as implemented in the Rockwell R65...
Rockwell made many 6502 variants. Some were 'SOCs', complete computers in an IC. and Rockwell was strong in Forth, e.g....
I have two R6501 IC's. One came with the Glitchworks GW-R65X1QSBC-1 kit, a R6501Q. The other from ebay, a R6501AQ (A for...