Tag: gsos

Converts a ROM 00 Apple IIgs to ROM 01 with a removable replacement ROM module.

The ReActiveMicro adapter was in stock and backorderable on 2026-07-24. Garrett's Workshop's alternative Tindie module was out of stock and had been sold out since August 31, 2024. These are ROM 00 to ROM 01 conversions, not ROM 03 upgrades.

Provides ProFile-style block storage from a raw SD card for enhanced Apple IIe and Apple IIgs systems.

The repository publishes binaries, firmware, VHDL, schematics, layout files, Gerbers, and a bill of materials, but no explicit license was verified. Capacity is limited to four 65,535-block volumes, or about 128 MB total. Under ProDOS, programs on the third and fourth partitions have a documented launch problem. This is a build project rather than a current assembled product.

Adds CompactFlash and USB mass storage plus floppy-image mounting to slotted Apple II and Apple III computers.

ReActiveMicro showed an in-stock, backorderable Add to cart path on 2026-07-24. The included media is preconfigured, but user-supplied images and operating systems still need to be compatible with the selected computer.

Period high-speed SCSI controller with an onboard processor, DMA, cache, and ROM-based disk utilities.

This is a period controller obtained used. Confirm whether the board is Revision C or D and which ROM it runs. Revision D does not use DMA in a IIe, while Revision C needs its documented IIe switch setting. SCSI ID, termination, terminator power, cable length, drive power, and backups all require care. Compatibility problems are documented with some accelerator and memory-card combinations; ROM 3.01E and 3.01EZ have a tape-restore bug corrected in later firmware.

Adds IDE mass storage to slotted Apple II computers with CompactFlash and external-drive options.

The current page exposed multiple selectable packages on 2026-07-24. User-supplied CompactFlash cards must comply with the original CF standard; the vendor warns that testing may be the only reliable compatibility check.