Tag: 3.5 inch

3 matching upgrades

Showing 3 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 25, 2026Commodore 1581 PC Floppy Adapterby Retro Electronics
commodore 1581floppy drivedrive adapter3.5 inchreplacement part

Connects a standard 3.5-inch PC floppy mechanism to a Commodore 1581 disk drive.

Retro Electronics listed two adapters in stock on 2026-07-25. Only the adapter is supplied; cables and the replacement floppy mechanism are not included.

Sources
  • Commodore 64 Bus/interface
1581 PC floppy adapter product page
Sold outChecked Jul 25, 2026Commodore 1581 Replicaby Retro Electronics
commodore 1581floppy drivereplacement board3.5 inchdrive controller

Assembled replica controller board for building a Commodore 1581-compatible 3.5-inch disk drive.

Retro Electronics listed the fully assembled and tested board out of stock on 2026-07-25. Only the controller PCB is supplied.

Sources
  • Commodore 64 Exact model
Commodore 1581 Replica product pagePrintable replica caseCommodore 1581 user's guide
Build itChecked Jul 27, 2026CS/A65 VC1581 Replicaby Andre Fachat
commodore 1581floppy drivedrive controller3.5 inchieccsa65replicaopen hardware

Builds a Commodore 1581-compatible IEC disk drive from CS/A65 processor and floppy-interface cards.

No assembled seller or current PCB supplier was verified. A build needs PETCPU and DRVIO cards, a backplane, components, a suitable 720 KB drive mechanism, a legal 1581 ROM image, power, cabling, and an enclosure. DRVIO revision 1.1A is marked okay and was tested with double-density PC drives; PETCPU revision 1.1B publishes board files but its layout is marked untested. High-density operation can overclock the WD1772 and is not the documented 1581 configuration.

Sources
  • Commodore 64 Bus/interface
Roll your own VC1581 project pageCS/A65 DRVIO boardCS/A65 PETCPU board