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

• Garrett's Workshop RAM2GS II (GW4201D) Manual (PDF)
• GWRAM RAM Capacity Selection Utility (140 kB .PO disk image for 5.25" drives)

RAM2E II (GW4203B) 8 MB RAM for Apple IIe

• Garrett's Workshop RAM2E II (GW4203B) Manual (PDF)
• Garrett's Workshop RAM2E II (GW4203B) Developer Note (PDF)
• Original RAMWorks III Manual¹ (PDF)
• GWRAM RAM Capacity Selection Utility (140 kB .PO disk image for 5.25" drives)

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

• Garrett's Workshop RAM128 (GW4208B) Manual (PDF)
• Garrett's Workshop RAM128 (GW4208A) Manual (PDF)
• Original Saturn 128 Manual² (PDF)
• Saturn 128 Utilities² (ZIP archive with 3 140 kB .DSK disk images)

GR8RAM (GW4205A) 8 MB RAM for Apple II

• Garrett's Workshop GR8RAM (GW4205A) Manual (PDF)
• Original Applied Engineering RAMFactor Manual³ (PDF)

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

• Garrett's Workshop GR8RAM (GW4205A) Manual (PDF)
• Original Applied Engineering RAMFactor Manual³ (PDF)
• NoSlotClock Utility¹⁰ (140 kB .DSK disk image for 5.25" drives)

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

• Garrett's Workshop ROM SIMM (GW4402A) Manual (PDF)
• GW4402A ROM image with System 7.1 ROM disk (8 MiB .bin file)
• GW4402A ROM image with System 6 ROM disk (8 MiB .bin file: 4 MiB ROM repeated 2 times)
• Unmodified Macintosh IIsi ROM⁴ (8 MiB .bin file: original 512 kiB ROM repeated 16 times)
• Unmodified Macintosh IIx, IIcx, SE/30 ROM⁴ (8 MiB .bin file: original 256 kiB ROM repeated 32 times)
• Unmodified Macintosh IIci ROM⁴ (8 MiB .bin file: original 512 kiB ROM repeated 16 times)
• Unmodified Macintosh IIfx ROM⁴ (8 MiB .bin file: original 512 kiB ROM repeated 16 times)
• GW4402A base ROM image with ROM disk driver and RAM test enabled (512 kiB .bin file)
• GW4402A base ROM image with ROM disk driver and RAM test disabled (512 kiB .bin file)
• dougg3/BMoW ROM SIMM Programmer software⁵ (link to GitHub)
• GW4402A firmware for dougg3/BMoW ROM SIMM Programmer⁶ (13 kiB .bin file)
• Original firmware for dougg3/BMoW ROM SIMM Programmer⁵ (link to GitHub)

GW4301A 2 MB geoRAM Clone for Commodore 64

• Garrett's Workshop GW4301A Manual (PDF)
• GEOS64 2.0r boot disk⁷ (800 kB .D81 disk image for 1581-type 3.5" drives)
• GEOS installation guide⁸
• geoRAM drivers for GEOS64⁷ (170 kB .D64 disk image for 1541-type 5.25" drives)
• GMT Memory Test 0.44⁹ (170 kB .D64 disk image for 1541/1571-type 5.25" drives)
• GMT Memory Test 0.44⁹ (800 kB .D81 disk image for 1581-type 3.5" drives)

ROM01 Upgrade for Apple IIgs

• Garrett's Workshop ROM01 Upgrade Manual (PDF)

GW419X-series 30-pin RAM SIMMs

• GW419X-series 30-pin RAM SIMM Selection Guide (PDF)
• SIMM Installation Troubleshooting Guide (PDF)

GW4404A and GW4405A 68-pin VRAM SIMMs for Macintosh

• GW4404A and GW4405A 68-pin VRAM SIMM Manual (PDF)
• SIMM Installation Troubleshooting Guide (PDF)

GW4406A 3 MB RAM for Macintosh Classic

• Garrett's Workshop 3 MB RAM for Macintosh Classic (GW4406A) Manual (PDF)