Description

Vintage MOS (Commodore) KIM-1 SBC Microcomputer - Complete Set/Mint/Working/Extras 

This KIM-1 is in factory-original, unmodified, working, excellent-to-mint condition. Revision G, green board in its original plain cardboard box with its original packaging and its original documentation. 

Based on the testing performed, this KIM seems to be functional!

The MOS Technology/Commodore KIM-1 Microcomputer was one of the first single-board computers. It is an old and unique collector's item from the mid 1970s used to showcase the MOS Technology 6502 processor. The 6502 ended up being one of the most popular processor chips of the era. It was eventually used in the Apple 2, in the Commodore Pet and in many Atari and Nintendo arcade games of the era.

This board is very clean and is in great overall shape with no visible damage, corrosion, or aftermarket modifications. The printed circuit board traces are all very clean and clear, and the components are intact. The three 40 pin chips are installed in sockets. The gold edge connector contacts are in excellent shape and are very clean and shiny.

The underside of the printed circuit board is also very clean with no obvious damage or defects. The tin coating layer seems to be cosmetically wrinkled underneath the board's green solder mask – this was typical of printed circuit boards manufactured in the 70s. The solder joints are clean.

Two 44-pin card edge connectors are included. One connector is used for power and for interfacing to the cassette recorder while the second is used for expanding the KIM.

This listing is for a MOS Technology/Commodore KIM-1 single board computer, green, rev. G, dated 1978, serial number SC-7040, with original documentation, original box and many included extras. 

Included are:

• KIM-1 single board computer - Rev G (1978), serial number SC-7040, in the original anti-static bag and in the original plain brown cardboard box (it even includes the original bubble-wrap it shipped in!) - all in excellent condition.
• Power Supply - standard  5V and 12V power supply
• 2x 44 pins edge connectors
• Original KIM-1 User Manual, number 6500-15B dated August 1976
• Original MOS KIM-1 Hardware Manual, number 6500-10A dated January 1976
• Original MOS Microcomputers Programming Manual, number 6500-50A  dated January 1976
• Original "KIM Hints" booklet
• Original MCS6501 Instruction Set Summary
• Original KIM-1 Microcomputer Module schematic poster - dated 1975
• BONUS ORIGINAL RARE BOOK: The First Book of KIM 
• Interface box for power and cassette recorder 
• Two RCA to 3.5mm cassette cables (to connect the interface box to the cassette recorder)
• Working cassette recorder/player with tape counter 
• 1x cassette tape
• 1x KIM UNO. This is a modern, standalone,  KIM-1 emulator, fully assembled and lightly tested (great way to test 6502 programs prior to running them on the KIM)
• 1x KIM UNO 3D-printed case and keypad
• 1x CD with electronic copies of most of the above manuals and documentation

Note: All included, printed, documentation is over 40 years old with some yellowing. All manuals are complete with no highlighting and no markings (that I could see by quickly scanning them). One of the manuals has a couple of (detached) loose pages, but is otherwise complete.

The KIM-1 powers on and responds to key commands. I was able to load, run, save (on cassette) and restore sample programs. I tested it by loading the program on page 9 of the KIM-1 User Manual. The program ran as expected and was then saved to cassette tape. The Kim was power-cycled and the program loaded from cassette and successfully ran again. The extent of the testing performed is by no means exhaustive, but seems to indicate that key functions work as intended. 

This is a rare collectors' item and a unique opportunity to own an unmodified, complete and working, museum-grade, single board computer from the '70s! You will not be disappointed! 

Despite it having been tested and having passed, I cannot guarantee complete and continued operation. This board is over 40 years old and is being sold as-is, no returns.