Shared Projects by KI5NYZ

8K RAM module for “Model T” computers.

How to do the legs.

https://gist.github.com/bkw777/52d85d89eeff8445cc667685d05ea94d

Don’t use square pins. They are too fat and they damage leaf-style sockets. Even standard machined round pins are a bit too thick technically.

Writable replacement for main rom in TANDY 102, TANDY 200, NEC PC-8201, Olivetti M10, Kyotronic KC-85

http://tandy.wiki/FlexROM_102

Optional breakout send/return for /CS line, for use with REX_Classic Main ROM Management Feature

This version is NOT for TRS-80 Model 100 !

For Model 100, use https://www.pcbway.com/project/shareproject/FlexROM_100.html

How to do the legs

To program the chip, just place the board directly into a programmer and set the two smaller jumpers.

(Does not require a programming adapter. The jumpers change the pinout to match the IC, so the board is it’s own programming adapter.)

You can find rom images at http://tandy.wiki/Model_T_Y2K

BOM verified by John Hutchison 2025.1.15 https://www.digikey.com/en/mylists/list/5FEBN35SNT