The MPF-1, or "Micro-professor" was introduced in 1981 for educational purposes by MultiTech Industrial Corp. This later became Acer.
There are several computers having "MPF-1" in the name:
|Board in book-type package||This is my MPF-1 in its package. There are some enhancements visible:
|Speech Module SSB-MPF||The speech synthesis module is based on the Texas Instruments TMS5200NL chip.|
|Video-MPF-1||There are at least two versions of this board; the original with the
EPROM at 0800h-0FFFh and RAM at 3000h-37FFh, and a newer version with EPROM
at A000h-A7FFh and RAM at 4000h-47FFh. For the original version the monitor
ROM on the MPF-1 was exchanged by a combined monitor (0000-07FFh) /
VIDMON ROM (0800-0FFFh). But
the later MPF-1B had a monitor / Tiny-Basic ROM. So the VIDMON ROM was
relocated to A000h-A7FFh.
Useful routines for version 2.0:
The character set image is the result of the key sequence: [ADDR], A, 0, 0, 7, [GO], [ADDR], A, 0, 1, 6, [GO].
The 2.0 ROM has a deliberate routine to replace every printed [`afg by afhi^. Why is a mystery to me.
The manual for version 1.0 is at the Virtual library. A modified ROM is also available here fixing the character mangling.
Last update: 2015-02-23