Tag: rom simm

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 14, 2026ISP-SIMM USB Programmable ROMby ZigZagJoe
rom simmprogrammable romusbflashrp2040firmware

Provides two switchable 8 MB flash banks that can be programmed over USB without a separate ROM programmer.

Sources
  • Macintosh SE/30 Exact model
Vendor product page
Sold outChecked Jul 14, 2026Mac ROM-inator II Carbonby Big Mess o' Wires
rom simm32 bit cleanboot romhd20memory

Replaces the stock ROM SIMM with a 32-bit-clean flash ROM, bootable ROM disk, and HD20 support.

The BMOW store showed the Carbon SIMM as sold out on 2026-07-14. It is incompatible with DayStar PowerCache and Turbo accelerators.

Sources
  • Macintosh SE/30 Exact model
Vendor storeProject detailsInstructions