Posts tagged with “CECDAT”

The Patch

The Patch was a unique all-hardware approach to implementing lower case on a TRS‑80 Model I. It was sold by CECDAT Inc. for a price starting at $69.97.

The normal approach to adding lower case involved a hardware modification plus a software driver. Radio Shack never added a lower case driver to the Model I ROM, so the separate driver was required to enable generation of lower case characters.