MP-L2 Parallel Interface

The MP-L2 parallel interface is a 5 1/4" wide x 4 3/4" high interface board implemented with the 6821 peripheral interface adaptor integrated circuit. The MP L2 is used to interface parallel type devices, such as printers, to the computer system. The board is provided with two separate DB 25 connectors with each providing 8 input or output lines, two additional output lines, and two control lines. Input or output selection is done via software programming. Software control of the interrupt lines and handshake polarity is also provided.

Introduced by Southwest Technical Products Corporation in 1978. Assembled MP-L2 was $120.

Board Photo (49K JPG)

Board Photo High Resolution (308K JPG)

Users Guide (15K PDF)

Red and Blue Board Layout (160K JPG)

Schematic (390K JPG) Thanks to Jeff Hellige for the schematic

Michael Holley's SWTPC Collection Home Page