| Products | CSG / MOS Commodore KIM-1 History & Pictures

By: Commodore  09-12-2011

MOS / CSG KIM-1 Microcomputer Trainer?
by Ian Matthews of Feb 15, 2003  Last uUpdated April 8, 2006

MOS KIM-1 History:
In August 1974 eight Motorola employees including and quit and went to work for a small chip manufacturer called . By June of 1975 they had developed samples of the processor and wanted a system to demonstrate it's power.  The chip was only US$25 at a time when the lesser Motorola 6800 was selling for $200.

  • KIM-3: 8K Memory Expansion Module

  • KIM-4: Motherboard: to interface with up to 6 other boards

  • KIM-5: Resident Assembler/Editor: to enter, edit and store assembly language programs

The KIM-1 was produced until about 1981 and became a Commodore's first (and successful) computer product.

KIM-1 Manuals, Schematics and More:

MOS KIM-1Magazine Articles:

KIM1 Pictures:

MOS KIM1 - Rev A

From Vern Graners

Commodore KIM1 - Rev F

From Vern Graners

Commodore KIM1 - Rev F

A Blue Board

32K RAM Expansion Card for KIM1

From Vern Graners

MOS "Visable Memory Board"

One super high tech video card

From Vern Graners

Commodore KIM1 FULLY Expanded

This amazing system was built in 1980 and sold in January 2003 for US$2000! It has 40K, a monitor, an eprom burner, a printer and anything else you can think of.

Courtesy of Ron Rega

Standard Monitor

I have never seen a monitor attached to a KIM other than this one. After doing research for this page, I found a small number of people have successfully expanded their KIM's to included a monitor.
This picture courtesy of Ron Rega

Expansion Card

This motherboard connects to the expansion connector of the KIM-1 as shown in the photos. It provides the regulation for +5 and +12 volts for the KIM. It contains 8 slots for additional boards. Standard S-100 configuration.
Courtesy of Ron Rega

PolyMorphic VTI Expansion Board

The PolyMorphic VTI board provides the interface for the video monitor and the keyboard. The output is composite video. Each character is a 7 x 9 matrix, so that each ASCII character has 9 memory blocks 7 bits wide in the ROM.

Courtesy of Ron Rega

Wameco EPM-2 EPROM Memory Board

The Wameco EPM-2 EPROM Memory Board contains the video/keyboard driver, system monitor, EPROM Programmer software and Ziptape software on EPROM. It is capable of 32K of programmed 2716's or 16K of 2708 EPROMS. It is currently configured from $C000 to $D8FF using 2516's (single voltage 2716)
Courtesy of Ron Rega

The information in this article was current at 06 Dec 2011

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