TRS-80 Diagnostic ROM for Model 4/4P 3d-parts Order your replacement case badge

Order your replacement case badge today

5) Fully Assembled with EPROM - Send us your image and we'll burn and assemble your unit

you might want to take a different approach to avoid the risk of any programming issues

93C57A (8BIT)

TRS-80 Diagnostic ROM for Model 4/4P 3d-parts Order your replacement case badgeGet the most out of your TRS 80 Model 4 4P with this essential diagnostic ROM! This TMS 2532A EPROM chip is pre burned with the popular "TRS 80 Diagnostic ROM" from Github user MisterBlack1. It's designed to be installed in the boot ROM position of your TRS 80 Model 4 or 4P, providing valuable diagnostic capabilities. (For detailed information and installation instructions, please refer to the Github repository.) Improve your troubleshooting