Model 200 RAM

The model 200 comes with 24k built in, and supports up to 2 more banks of 24k in the form of ceramic dip modules that plug into the Option RAM #1 & #2 sockets.

The original 24K module was Catalog Number 26-3866.

Here is an open source design for a new compatible module. Actually it's a few different varaitions of modules to suit different chips availability, and different user skill at hand soldering.

This is new and not yet tested, but the circuit is simple.

https://github.com/bkw777/TANDY_200_RAM

More info

http://bitchin100.com/wiki/index.php?title=Tandy_200_RAM

http://club100.org/memfiles/index.php?&direction=0&order=&directory=Steve%20Adolph/T200%20Ram%20module

http://club100.org/memfiles/index.php?action=downloadfile&filename=m200ram.txt&directory=Steve%20Adolph/mods_to_upgrade_ram