FlexROM 102: Difference between revisions
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BOM: https://www.digikey.com/short/zdhft4 | BOM: https://www.digikey.com/short/zdhft4 | ||
KiCAD schematic and pcb sources: | KiCAD schematic and pcb sources: https://github.com/bkw777/aDIPters | ||
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. | 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. | I HIGHLY suggest using ChipQuick or FastChip desoldring alloy to desolder the original rom chip to avoid damaging the mainboard. | ||
Revision as of 10:05, 3 November 2020
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
Updated Version
Now programmable without SOIC28 test clip.
PCB: https://oshpark.com/shared_projects/UWjAMPF8
BOM: https://www.digikey.com/short/zdhft4
KiCAD schematic and pcb sources: https://github.com/bkw777/aDIPters
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.