Tag: diagnostic rom

3 matching upgrades

Showing 3 products.

StatusProductWhat it doesCompatibilityLinks
Build itChecked Jul 30, 2026Diag264 Diagnostic ROM and Harnessby Rob Clarke, with OpenC16Cart hardware by SukkoPera
c16plus 4teddiagnostic cartridgediagnostic romtest harnessloopback testram testrom testkeyboard testcassette portiecuser portaciapalntscdiyrepair

DIY diagnostic ROM and loopback harness for PAL and NTSC Commodore 264-family computers.

Rob Clarke's current download directory offered Diag264 0.97 on 2026-07-30. The maker also offers a programmed EPROM at media and postage cost by email. The software is CC BY-NC-ND 4.0: unmodified personal distribution with attribution is allowed, but modification and commercial resale are prohibited. The maker warns that some third-party marketplace copies were unauthorized or modified. Loopback hardware may be resold when the attribution conditions are met.

Sources
  • Commodore 16 Exact model
  • Commodore 116 Exact model
  • Commodore Plus/4 Exact model
  • Commodore V364 Exact model
Diag264 project and manualDownload Diag264 0.97Build the OpenC16Cart cartridge
DiscontinuedChecked Jul 27, 2026DivIDE Revisedby Lotharek / Velesoft
dividecompactflashfat16esxdosfatwarediagnostic romjoysticklcdedge connectorvintage

Adds CompactFlash storage, selectable disk firmware, an LCD, and a five-mode joystick interface to original ZX Spectrum computers.

Lotharek marks this revision discontinued. The seller says its joystick functions were tested on original Sinclair and Amstrad ZX Spectrum computers and does not guarantee clones. Media needs one active FAT16 partition, and compatibility still depends on selected firmware and correctly prepared software images. Identify the installed firmware and switch settings before using a second-hand unit.

Sources
  • ZX Spectrum expansion-bus hardware Bus/interface
Lotharek DivIDE Revised archive pageSearch eBay for DivIDE Revised
AvailableChecked Jul 25, 2026SuperSoft Landmark Diagnostic ROMsby SuperSoft / Landmark, supplied by Retro Electronics
diagnostic rommotherboardibm xtrepair

Programmed replacement ROM variants for diagnosing IBM PC, XT, and AT motherboard faults.

All three machine-family variants were listed in stock on 2026-07-25. Each replaces original motherboard ROM hardware temporarily; match the exact machine and sockets, observe chip orientation, and retain the original ROMs.

Sources
  • IBM Personal Computer 5150 Exact model
  • IBM Personal Computer XT 5160 Exact model
IBM 5150 diagnostic ROM packageIBM 5155 and 5160 diagnostic ROM packageIBM 5162 and 5170 diagnostic ROM package