Welcome to the KIM-1 Dual 6530-6532 adapter repository. This adapter replaces both 6530 chips on the KIM-1 with a single board that contains a couple of 6532 chips, an EPROM and a few logic ICs.
As far as I know, this is the only board that allows you to replace both 6530 chips simultaneously.
I designed this board for my KIM-1 PCB replica, but it will also work with real KIM-1s that have both RRIOTs missing or broken.
The schematic is based on Ruud Baltissen's KIM-1 replica, with very minor modifications. The PCB features hand-traced tracks to seamlessly integrate with the KIM-1 board:
WARNING: I have not yet sent the board to fabrication, so it is untested!
The board has been successfully tested with my my KIM-1 replica
You can get the ROM contents from Hans Otten's site
There are two sets available: One that uses $00 as filler bytes and another that uses $FF. Both work equally well, but the one with $00 is what the original KIM-1 has. To program the EPROM:
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Download "6530-002 fillerbyte00.bin" and "6530-003 fillerbyte00.bin" from Hans Otten's site (replace FF with 00 if you wish) "6530-003 fillerbyte00.bin" has the ROM contents from $1800 to $1BFF and "6530-002 fillerbyte00.bin" from $1C00 to $1FFF
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Concat both files:
$ cat "6530-003 fillerbyte00.bin" "6530-002 fillerbyte00.bin" > KIM-1-ROM.bin
- Program the EPROM with the resulting file starting at address $1800
This is a personal project that I am sharing in case it is of interest to any retrocomputing enthusiast and all the information in this repository is provided "as is", without warranty of any kind. I am not liable for any damages that may occur, whether it be to individuals, objects, KIM-1 computers, kittens or any other pets. It should also be noted that this design has not been tested and may contain errors, therefore anyone who chooses to use it does so at their own risk.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
EXCEPTION: The electrical schematic and all the associated symbols are licensed under a Creative Commons Attribution 4.0 International License.
See the LICENSE.md file for details.
- Fix tracks that were not well imported from svg
- Make ROM content available on phi2 only
- Add decoupling capacitor to ROM chip
- Hans Otten and his Retro Computing blog. Everything you need to know about the RRIOT and RIOT.
- Ruud Baltissen for the original schematic.
- Frank Wolf and Dieter a.k.a. ttlworks for their 6530-004 dissection (Also here).