Tag: multi rom

6 matching upgrades

Showing 6 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 30, 202664NIC+by RETRO Innovations

Adds wired 10 Mbit Ethernet and RR-Net-compatible networking to C64-family computers, with an optional multi-ROM socket.

The current RETRO Innovations store exposed the 64NIC+ category and a Choose Options purchase path on 2026-07-30. The product comes in four case and ROM-selector configurations. Network software, an Ethernet cable, and a 10 Mbit-capable network connection are required separately.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore SX-64 Exact model
AvailableChecked Jul 30, 2026C64/C128 Diagnostic Cartridge Familyby Commodore service ROMs, Sven Petersen open hardware, and multiple current assemblers

Packages 586220, 785260, and related service ROMs as current single-ROM and switchable multi-ROM diagnostic cartridges.

Current choices on 2026-07-30 included Retro Rewind's in-stock CAD 22 C64 586220++ and C128 785260 cartridges, its CAD 40 four-ROM C64 cartridge with a two- to three-day lead time, AMI64's GBP 19 eight-ROM C64 cartridge with an approximately seven-day lead time, ogHugo's USD 26.99 before-tax two-sided C64 cartridge with an Add to Cart path, Retro-Updates' EUR 17.99 two-sided C64 cartridge, and C64iSTANBUL's orderable two-ROM PCB with current fabrication files. DIY8BIT's USD 22.95 781220/586220 cartridge was unavailable while its Etsy shop was on break. Retro Rewind's older Dual Diag route now displays the store's not-found page. ROM sets and model support differ by variant; a full port test requires a separately bought or built harness.

Sources
  • Commodore 64 Exact model
  • Commodore SX-64 Exact model
  • Commodore 128 Exact model
AvailableChecked Jul 24, 2026Open2327 ROM Adapter Familyby SukkoPera / The Brewing Academy

Replaces a 24-pin 2364 ROM with a programmable 27xxx-family EPROM or EEPROM and optionally switches among several ROM images.

The Atari-specific Brewing Academy page exposed an Add to Cart path on 2026-07-24, and the open design includes fabrication files. The assembled adapter is configured for a 2764; other capacities need the documented resistor configuration and optional switches. The open project says only the W27C512 configuration was thoroughly tested. Supply legally obtained, exactly sized ROM images and verify socket orientation.

Sources
  • Atari 600XL Stated family
  • Atari 800XL Stated family
  • Commodore 64 Exact model
  • Commodore VIC-20 Exact model
AvailableChecked Jul 25, 2026Retro Electronics Rotary Multi-ROMby Retro Electronics

Socketed rotary-switch ROM board sold with either eight C64 KERNALs or a mixed C64 and 1541 diagnostic set.

Retro Electronics listed two KERNAL-set boards and three mixed repair-set boards in stock on 2026-07-25. Both arrive preprogrammed. The pages name original and third-party ROM images but do not document their licensing; verify that you are entitled to use every selected image.

Sources
  • Commodore 64 Exact model
Find usedChecked Jul 27, 2026SuperKernal 36-in-1by SuperKernal project

Replaces a C64 or SX-64 KERNAL ROM with 36 selectable ROM or program slots, file browsing, firmware updates, and optional WLAN and FTP access.

No current official retailer or reproducible fabrication package was verified. A July 2026 hobby report says units had reappeared on Kleinanzeigen, so treat SuperKernal as used-market hardware and verify that the module, WLAN board, headers, firmware, and documentation are included. Supply only ROM images you are licensed to use.

Sources
  • Commodore 64 Exact model
  • Commodore SX-64 Exact model
Build itChecked Jul 30, 2026Versa64Cartby Bwack and Sven Petersen

Open EPROM cartridge board for making single-ROM, switchable multi-ROM, and diagnostic cartridges for the C64 and C128.

The repository provides board revisions, fabrication files, and documentation. A working cartridge still requires a PCB, components, a correctly programmed EPROM, and configuration appropriate to the selected ROM images.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model