This is the ROM0 to ROM1 , eng Alpha 2.0 , ROMBF or any custom ROM adapter.
It allows you to upgrade your ROM0 IIgs to a ROM1 or other described .
The Adapter uses a standard 29F040 EEPROM that is removable and reprogrammable with any standard IC Programmer.
You can also use the Apple GSx ROM Adapter for experiment and firmware development.
We can also program other IIgs firmwares on to the EEPROM if requested .
Attention : you can't use this Adapter to upgrade a ROM0 or ROM1 IIgs system to ROM3 !
You can switch betwen four ROM-s pre programmed on Adapter .
0 : ROM 00
1 : ROM 01
2: eng Alpha 2.0
3 : ROMBF
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| ROM 00 | ROM 01 | eng Alpha 2.0 | ROMBF |
Package including :
- Apple IIGSxROM Adapter with programmed ROM-s



