MP-C Serial, Control Interface

The MP-C Control interface is a 5 1/4 inch x 3 1/2 inch board which is meant to interface a serial terminal to the Computer System for both system control and when selected, user program input/output. It may be jumper configured to operate serially at either 110 baud (10 characters / second) or 300 baud (30 characters/second) with an upper case ASCII terminal RS-232C or 20 Ma TTY compatible. All terminal input/output data is made thru a ten-pin connector installed along the top edge of the board.

This interface card implemented a software UART and was for use with the Motorola MIKBUG monitor program. The MP-C was replaced with the MP-S when the SWTBUG monitor program was introduced.

Introduced by Southwest Technical Products Corporation in 1975. The MP-C kit cost $40.

Board Photo (47K JPG)

Board Photo High Resolution (95K JPG)

Assembly Instructions (340K PDF)

Schematic 8.5 x 11 (210K PDF)

Michael Holley's SWTPC Collection Home Page