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

TimeDisk (GW4206A and GW4206B) 1 MB Battery-Backed RAM & Clock for Apple II

GW4402A ROM SIMM for Mac SE/30 and Mac 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

GW4406A 3 MB RAM for Macintosh Classic


[1] RAMWorks manual and utilities courtesy Applied Engineering
[2] Saturn 128 manual and utilities courtey Titan Technologies
[3] RAMFactor manual and software courtesy Applied Engineering
[4] NoSlotClock utility courtesy SMT Peripherals
[5] ROM courtesy Apple
[6] ROM SIMM Programmer software and original firmware courtesy dougg3
[7] GEOS courtesy Berkeley Softworks
[8] installation guide is hosted and maintained by cbmfiles.com
[9] GMT memory test courtesy GGLabs and licensed under the GPL