Garrett's Workshop

We design, manufacture, and sell memory products for legacy computer systems.

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Drivers and Documentation

RAM2GS II (GW4201D) 8 MB RAM for Apple IIgs

RAM2E II (GW4203B) 8 MB RAM for Apple IIe

RAM128 (GW4208A and GW4208B) 128 kB RAM for Apple II

GR8RAM (GW4205A) 8 MB RAM for Apple II

GW4402A ROM SIMM for Mac SE/30 and II-series

GW4301A 2 MB geoRAM Clone for Commodore 64

ROM01 Upgrade for Apple IIgs

GW419X-series 30-pin RAM SIMMs

GW4404A and GW4405A 68-pin VRAM SIMMs for Macintosh


[1] RAMWorks manual courtesy Applied Engineering
[2] Saturn 128 manual and utilities courtey Titan Technologies
[3] GEOS courtesy Berkeley Softworks
[4] installation guide is hosted and maintained by cbmfiles.com
[5] RAMFactor manual and software courtesy Applied Engineering
[6] ROM courtesy Apple
[7] ROM SIMM Programmer software and original firmware courtesy dougg3
[8] Firmware based on dougg3's work with source available here