Tag: c128

Runs a cartridge-resident suite of health, speed, alignment, sector, and command tools for 1541-family floppy drives.

Protovision listed 22 units at EUR 25 with a one- to two-week shipping estimate on 2026-07-30. Jani also publishes free cartridge images for device 8 and device 9. The software alignment display is a health indicator, not a substitute for a factory analog alignment disk and oscilloscope.

Combines a Commodore 128's 40-column and 80-column video paths in one switchable external adapter.

Pyrofer's Projects lists the NTSC board and its separate C128DCR mounting tab as out of stock. The normal package uses tabs for the flat C128 and standard C128D; the differently spaced C128DCR requires the separate tab. Although the board has a PAL/NTSC selection, the seller says changing format also requires a different oscillator IC, and the listed package includes the NTSC oscillator.

Boots before the normal KERNAL to diagnose RAM and ROM faults on a Commodore 64 that cannot reach its startup screen.

Retro Rewind listed its cartridge in stock at CAD 22 on 2026-07-30. TFW8b documented a compatible alternative for C64, C64C, SX-64, and C128 in 64 mode, but that listing was out of stock. Wait up to 60 seconds for a result. The original 781220 RAM routine covers only the lowest 4 KB, and the cartridge does not test the chips and I/O covered by a harness kit.

Passive adapter-cable options for powering a Commodore 128 from a suitable modern C64 power supply.

On 2026-07-30, CMD Marketplace listed its 15 cm adapter at USD 19 with five units remaining, Electroware listed its 16 cm adapter at EUR 15.99 with dispatch in three to five days, and Keelog listed its 22 cm adapter at USD 23.99 or EUR 20.99. Commodore4ever listed its 90-degree option at USD 14.99, but the page did not expose unambiguous variant stock. CMD Marketplace requires a new switching C64 supply capable of at least 3 A and explicitly warns against using an old original C64 supply. Treat that as a minimum for its adapter and confirm the requirements of any other adapter and supply combination before use.

Adds the loopback modules needed for complete 586220 C64 or 785260 C128 port and interface diagnostics.

Current routes on 2026-07-30 included Retro-Updates' EUR 17.95 harness with an Add to Cart path, Retro Rewind's CAD 75 harness with a one- to two-week lead time, Retro Rewind's separate CAD 22 C128 keyboard dongle in stock, and AMI64's GBP 49 complete eight-ROM kit. Retro Electronics had one complete kit on 2026-07-25 but documented only one tested PAL C64 board revision. Confirm the exact harness revision, cartridge, keyboard dongle, cable lengths, model settings, and included manuals before ordering. Human review found no evidence that the current retail dongle solves the documented C128DCR keyboard-jack power conflict.

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.

External displays for checking the 5 VDC and 9 VAC outputs of Commodore power supplies, with the MkII adding current measurement under load.

The exact review was published in March 2020 and a February 2023 comment says the seller was still making the monitors. The review describes an unofficial Commodore-styled product made by an unnamed Australian builder, not a verified Commodore-manufactured accessory. A current-looking Pocket 1501 eBay route failed exact Tavily extraction and failed again after the required 60-second retry under WF-068, so its maker, stock, price, package, and relationship to MkI and MkII remain unverified. The separate FDD II drive-supply monitor is not folded into this host-monitor family. This device displays readings; no automatic cutoff, regulation, over-voltage clamp, fuse, or other protective action was verified.

Current C64 and C128 user- and cartridge-port boards that expose labeled pins for prototyping and hardware development.

Commodore4ever exposes current priced product variants for separate C64/128 user-port and cartridge or expansion-port boards. The user-port page documents its labeled male header and intended test uses. The expansion-board title and board label say EPB and cartridge or expansion port, but its body mistakenly describes access to the User Port and does not enumerate its signals. Human inspection found these guide breakouts to be basic passive pin extenders with no visible active components. No buffering, isolation, fusing, or current limiting is documented; exposed computer pins should not be treated as protected. Syzygy's C64 user-port version is retired and needs its selected header rows soldered.

Historical breadboard adapters for prototyping through a Commodore control port or the VIC-20 expansion port.

C64 OS preserves the former $13 joystick and $19 VIC-20 listings, but no current product was exposed on Dorktronic's eBay profile in July 2026. The joystick item URL also failed two Tavily extractions after the required 60-second retry and is logged as WF-062. Treat both boards as used-market finds. Documentation was not included. Both designs expose computer power and signal lines directly; the VIC-20 feature explicitly warns that improper prototyping can damage the computer.

Current protected replacement supplies with separate direct-connect C64/VIC-20 and C128 versions.

On 2026-07-30, Electroware listed the eleventh-revision C64 version at EUR 46.99 and the twelfth-revision C128 version at EUR 52.99, both with dispatch in three to five days. Each has regional mains choices and an optional Adjust and Protect trim of roughly 4.9 to 5.3 V. Buy the direct version for the computer; the C64 model reaches a C128 only through a separate adapter.

A calibrated cassette-port display that measures the computer's live 5 V rail while preserving the Datasette connection.

Electroware listed the factory-calibrated meter at EUR 18.99 with dispatch in three to five days on 2026-07-30. It measures the live 5 VDC rail only. It does not display 9 VAC, apply a test load, regulate voltage, or automatically disconnect a failing supply.

Current and DIY versions of the C64 and C128 utility cartridge with fast loading, freezer, monitor, BASIC extensions, and desktop software.

Daniel Mantione currently offers the assembled Final Cartridge III 101% with a case through his project page and SellMyRetro. It arrives without firmware, so the buyer must flash a compatible image before use; version 2 of the 101% firmware and the C64 flasher are available from the maker. The separate C64iSTANBUL III+ project offers an orderable through-hole PCB, bill of materials, and 64 KB or 256 KB EPROM images, but it requires assembly and an EPROM programmer. PCBWay labels that shared hardware project CC BY-SA 3.0. The original and derivative firmware remains copyrighted and is not presented as freely licensed.

Current FPGA replacement for MOS 6526 and 8521 CIA chips with selectable old- or new-CIA behavior.

The official project page links multiple current retailers, and AmericanRetro exposed a direct Buy Now route on 2026-07-30. The maker says the implementation passes its diagnostic and software suites but explicitly warns that a reproduction cannot be guaranteed identical under every hardware and software combination. Clockwork64's maker separately reports problems with J-CIA replacements.

Vintage and DIY C64 freezer cartridge that saves restartable memory snapshots to disk, tape, or EPROM-oriented cartridge files.

DDI's Re-Capture page still exposes Gerbers, a parts list, a Capture ROM archive, and a manual link. The parts list specifies the EPROM, SRAM, logic, passives, and switch choices, but ReplayResources says the schematic is still missing and no complete assembly or test guide was found. Neither page supplies a clear license for the reproduction files or Capture software. ReplayResources quotes permission relating to Jason-Ranheim's separate Promenade materials but explicitly says its own Capture permission requests went unanswered, so the catalog does not treat the Capture ROM as open or freely licensed. Original cartridges remain worth searching for used.

Protected regional replacement supplies for the C64, later VIC-20, and C128 in Classic, Modern, and current RetroPower enclosures.

Keelog's current family pages listed regional C64 and C128 supplies on 2026-07-30. Representative EU Classic or Modern products were USD 65.99 or EUR 57.99. Classic measures 86 by 70 by 48 mm; Modern measures 125 by 59 by 42 mm, with black and gray choices. Keelog also identifies RetroPower as the successor enclosure. Match the computer branch, connector, mains voltage, and regional plug rather than selecting by case style alone.

Open microSD cartridge that emulates many C64 and C128 cartridge formats and loads programs and disk images.

Retro Electronics listed one assembled cartridge in stock on 2026-07-25 without a microSD card. Lotharek also exposed a current order path on 2026-07-27 for a redesigned board in a transparent case. Retro Electronics installs Version 1.35 by default and treats its NTSC build as work in progress; check the current Codeberg releases before use.

Adjustable VIC-IIe interposer intended to reduce jail bars, color stripes, and S-Video checkerboarding on a Commodore 128.

Protovision listed four units in stock at 33 EUR with a one-to-two-week delivery estimate on 2026-07-30. Shareware Plus also offered email ordering at 28 GBP plus postage on a page updated in August 2025. Installation and adjustment are not necessarily drop-in: a metal-case 128D may need the supplied additional IC socket to clear a taller nearby capacitor. Human review found no revision-specific installation sheet, so exact plastic C128D and C128DCR shield, heatsink, capacitor, and switch clearance remain unverified.

Current flashable C64 freezer and development cartridge compatible with Retro Replay, Action Replay, and Nordic Power ROMs.

individual Computers marked Nordic Replay available for immediate delivery on 2026-07-30 as a fully assembled and boxed cartridge with the Retro Replay ROM pre-flashed. iComp supports the hardware but not the third-party ROM software. Action Replay compatibility does not supply an Action Replay ROM license; the maker says an owner may use an image from an original cartridge. The accessory connector is documented only for compatible devices such as Silversurfer, RR-Net, and MP3@64, and the technical page warns that incorrectly fitted hardware can short and destroy both devices.

Compact cartridge-port prototyping PCB and breadboard-bridge kit for C64 hardware development.

Both email-order pages were last updated on 2025-01-01. The kit page then claimed stock, while the version 2 page gave no price or stock quantity. Neither page exposes a checkout route, pin map, schematic, design files, license, board-revision comparison, protection details, or complete included-parts list for a bare version 2 board. Confirm current availability and the exact PCB revision and package before ordering.

Custom replacement supplies ranging from simple C64 units to multi-connector systems for several Commodore computers and drives.

The readable C64 OS feature was last modified in September 2022 and gave a USD 35-100 range for standard examples, with more elaborate custom builds possible. It directed orders and inquiries to Ray Carlsen by email. Both linked maker pages failed Tavily extraction and failed again after the required 60-second retry under WF-066 and WF-067, so current ordering, prices, model names, electrical ratings, protection, and mains options must be confirmed directly. Do not transfer the specifications or simultaneous-device behavior of one custom build to another.

Historical MOS 8701 replacement with automatic PAL or NTSC selection and an onboard switchable oscillator.

The maker's August 2021 AmiBay thread said that only a few units remained, and the thread is now closed. No current direct order path was verified. Inspect a used board for its solder-bridge configuration before relying on automatic motherboard selection.

Open five-board set for bringing Commodore cassette, user-port, and PET IEEE-488 connections to headers and ribbon cables.

The public repository provides revisioned PCB project files, pictures, and a GPLv3 license, but no current assembled seller is documented. Builders must fabricate the required board pair, fit connectors, and make the matching ribbon cable. The concise README does not document buffering, isolation, fusing, current limits, or a safe live-connection procedure; verify orientation and wiring and make every connection with the computer powered off.

Historical low-power MOS 8701 replacement with separate PAL and NTSC versions and an onboard oscillator.

The original AmiBay sales thread is closed and its seller account has been deleted. No current direct order path was verified. TOLB was sold in separate PAL and NTSC versions, so identify the fitted variant and motherboard video standard before installing a used unit.

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.