Tag: rom 1

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
Sold outChecked Jul 24, 2026AppleIIGSxROMby A2Heaven
romeepromfirmwarerom 1adapter

Adds a reprogrammable, four-bank ROM adapter for ROM 0 Apple IIgs systems.

The adapter is currently listed as out of stock. It cannot convert a ROM 0 or ROM 1 Apple IIgs to ROM 3.

Sources
  • Apple IIgs Exact model
Vendor product page
Sold outChecked Jul 24, 2026RAMGS/4 and RAMGS/8 Memory Expansionby GGLABS
ram4mb8mbapple iigsmemory expansionrom 1

Adds either 4 MB or 8 MB of low-power fast RAM to an Apple IIgs.

The GGLABS Tindie store was taking a break on 2026-07-24, so neither capacity had a current order path. Choose one capacity; both occupy the dedicated memory slot.

Sources
  • Apple IIgs Exact model
RAMGS/4 vendor pageRAMGS/8 vendor pageRAMGS/4 technical documentation