Shared Projects by kiwisincebirth

The SuperMem board is an addition to the TRS-80 Model 1k that provides 512KB of Banked SRAM (mostly) compatible with the SuperMem 512 for the Model 1

This is implemented as a small board that replaces the 128 Kbyte SRAM chip on the main board, and contains the 512KB SRAM and the necessary bank control logic.

NOTE: THIS IS FOR V2 OF THE MODEL 1K

The SuperMem board is an addition to the TRS-80 Model 1k that provides 512KB of Banked SRAM (mostly) compatible with the SuperMem 512 for the Model 1

This is implemented as a small board that replaces the 128 Kbyte SRAM chip on the main board, and contains the 512KB SRAM and the necessary bank control logic.

NOTE: THIS IS FOR V1 OF THE MODEL 1K

This is a project to provide a FreHD that directly connects to the TRS-80 Model 1 40 pin expansion port. It was designed to be functionally compatible using primarily all the same parts, and also software compatible, as it uses he same PIC and GAL firmware

It was designed to work with the Model 1 attached via appropriate 40 pin ribbon cable, and specifically for the Model 1k via it’s internal expansion port.

The physical layout of the board while different still has the power and IO connection is on one side, and SD card and LED’s on the other. Mounting holes and some pinouts are different.