I am interested in acquiring and preserving early microprocessor equipment, including those devices that used the Mostek processor. I am also interested in associated peripherals, manuals and other documentation.
If you have any of these items or know where to find them, please send me an e-mail.

The Mostek MK-3870 is an early 8-bit microprocessor modeled after the Fairchild F8.

Mostek was purchased by Thompson-CSF in 1985.

The following diagram appeared in the July 1977 issue of IEEE Spectrum magazine.

Mostek also created an emulator board, the EMU-70, that is electrically equivalent to the 3870 and can be reprogrammed.
This announcement appeared in the September 1982 issue of IEEE Spectrum magazine.

MK3870 microcomputer offered in 28-pin version

The MK2870 single-chip microcomputer is packaged in a 28-pin plastic DIP as opposed to the 40-pin package of the industry-standard MK3870. Areas of application include video games, appliances, and controllers.

The device has 1 kilobyte of ROM, 64 bytes of RAM, and 20 pins for user I/O. The part is software-compatible with the Mostek MK3870 family. New users can develop software on the Mostek Radius remote development station or on the Matrix stand-alone hardware- and software-development system.

Price is $3.55 each in minimum quantities of 5000 pieces.

Mostek Corp., 1215 W. Crosby Rd., Carrollton, Texas 75006.

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Updated March 18, 2006