FlexROM 102

EEPROM adapter for Tandy Model 102 system rom

With REX main rom support.

Use this version also for late-model 100's that don't have the non-standard main rom pinout. (If you have a Model 100, and the main rm is NOT a LH535618, then use this instead of FlexROM_100)

Use this version also for NEC PC-8201/PC8201A

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Updated Version

Now programmable without SOIC28 test clip.

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PCB: https://oshpark.com/shared_projects/UWjAMPF8

BOM: https://www.digikey.com/short/zdhft4

KiCAD schematic and pcb sources: github

Directions all the same as FlexROM_100, except in addition you have to desolder the system rom from the mainboard and install a DIP28-0.6" socket in it's place.

I HIGHLY suggest using ChipQuick or FastChip desoldring alloy to desolder the original rom chip to avoid damaging the mainboard.