Tag: 2mb

3 matching upgrades

Showing 3 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
AvailableChecked Jul 27, 2026	Amiga 500 2 MB Chip RAM Moduleby Lotharek 2mb ram upgrade internal upgrade soldering	Upgrades a Revision 8A Amiga 500 motherboard to 2 MB of Chip RAM with a soldered internal module. The product page exposed a login-or-register-to-buy path on 2026-07-27. It is only for Amiga 500 Revision 8A motherboards, requires soldering, and makes the trapdoor RAM expansion unusable. The current Revision 3 no longer needs the LSP connection shown on page 6 of the older fitting manual, so follow the current seller note rather than that obsolete step. Sources Lotharek Amiga 500 2 MB Chip RAM page	Amiga 500 Exact model	Lotharek Amiga 500 2 MB Chip RAM module
Build itChecked Jul 24, 2026	GW4301A 2 MB geoRAMby Garrett's Workshop georam 2mb ram expansion cartridge port geos cpld open hardware diy	Open low-power 2 MB geoRAM-compatible expansion cartridge for the Commodore 64. The assembled Tindie cartridge was out of stock on 2026-07-24 and had been sold out since June 10, 2024. The open design remains buildable. This is geoRAM memory, not an REU: software must explicitly support geoRAM. Most C64 programs use neither expansion-memory type, and GEOS needs an added geoRAM driver on its boot disk. Sources Garrett's Workshop GW4301A page GW4301 project repository	Commodore 64 Exact model	GW4301A product page Open hardware and CPLD firmware Garrett's Workshop manual and tests
AvailableChecked Jul 24, 2026	SMC ROM SIMM Cardby Infinity Products rom simm 2mb flash rom eprom boot rom programmable rom	Provides a programmable 2 MB Macintosh ROM SIMM using four socketed PLCC32 flash chips. The current page offered populated and chipless versions in multiple PCB colors on 2026-07-24. Its dated notice says the red PCB alone was out of stock on 2026-04-26, with black and purple also listed. Sources Infinity Products SMC ROM SIMM page	Macintosh SE/30 Exact model Macintosh IIx Exact model Macintosh IIcx Exact model Macintosh IIci Exact model Macintosh IIfx Exact model Macintosh IIsi Exact model	SMC ROM SIMM product and programming page

AvailableChecked Jul 27, 2026

Amiga 500 2 MB Chip RAM Moduleby Lotharek

Upgrades a Revision 8A Amiga 500 motherboard to 2 MB of Chip RAM with a soldered internal module.

The product page exposed a login-or-register-to-buy path on 2026-07-27. It is only for Amiga 500 Revision 8A motherboards, requires soldering, and makes the trapdoor RAM expansion unusable. The current Revision 3 no longer needs the LSP connection shown on page 6 of the older fitting manual, so follow the current seller note rather than that obsolete step.

Sources

Lotharek Amiga 500 2 MB Chip RAM page

Amiga 500 Exact model

Lotharek Amiga 500 2 MB Chip RAM module

Build itChecked Jul 24, 2026

GW4301A 2 MB geoRAMby Garrett's Workshop

Open low-power 2 MB geoRAM-compatible expansion cartridge for the Commodore 64.

The assembled Tindie cartridge was out of stock on 2026-07-24 and had been sold out since June 10, 2024. The open design remains buildable. This is geoRAM memory, not an REU: software must explicitly support geoRAM. Most C64 programs use neither expansion-memory type, and GEOS needs an added geoRAM driver on its boot disk.

Sources

Commodore 64 Exact model

GW4301A product page Open hardware and CPLD firmware Garrett's Workshop manual and tests

AvailableChecked Jul 24, 2026

SMC ROM SIMM Cardby Infinity Products

Provides a programmable 2 MB Macintosh ROM SIMM using four socketed PLCC32 flash chips.

The current page offered populated and chipless versions in multiple PCB colors on 2026-07-24. Its dated notice says the red PCB alone was out of stock on 2026-04-26, with black and purple also listed.

Sources

Infinity Products SMC ROM SIMM page

Macintosh SE/30 Exact model
Macintosh IIx Exact model
Macintosh IIcx Exact model
Macintosh IIci Exact model
Macintosh IIfx Exact model
Macintosh IIsi Exact model

SMC ROM SIMM product and programming page