FlexROM 102: Difference between revisions
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=EEPROM adapter for Tandy Model 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 | |||
<gallery> | <gallery> | ||
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</gallery> | </gallery> | ||
PCB: | == Updated Version == | ||
Now programmable without SOIC28 test clip. | |||
<gallery> | |||
FlexROM_102_1.jpg | |||
FlexROM_102_2.jpg | |||
</gallery> | |||
PCB: https://oshpark.com/shared_projects/UWjAMPF8 | |||
BOM: https://www.digikey.com/short/zv51fz | |||
You will also need a dip-28 0.6" socket to install on the mainboard https://www.digikey.com/short/zdb570 | |||
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. https://www.amazon.com/dp/B015RV4NBS | |||
Latest revision as of 03:25, 4 December 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/zv51fz
You will also need a dip-28 0.6" socket to install on the mainboard https://www.digikey.com/short/zdb570
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. https://www.amazon.com/dp/B015RV4NBS