Originally designed by Koolstar42 on the VCFED forums. I've made some small improvements.
Up to 4-megabit EEPROMs are supported, for a total of 2 megabytes addressable ROM.
This ROM SIMM is compatible with the following Macintosh models:
- IIx
- IIcx
- IIci
- IIfx
- IIsi
- SE/30
When ordering from a PCB manufacturer, specify 1.2mm board thickness.
| Quantity | Description | Designators |
|---|---|---|
| 3 | 0.1μF ceramic capacitor, 0805 package | C1, C2, C3 |
| 4 | 32 (2 x 7, 2 x 9) pos. PLCC socket, through hole | U1, U2, U3, U4 |
| 4 | 32-PLCC EEPROM, i.e. SST39SF040 |