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diff --git a/nuttx/configs/p112/README.txt b/nuttx/configs/p112/README.txt new file mode 100644 index 000000000..6b6f5964d --- /dev/null +++ b/nuttx/configs/p112/README.txt @@ -0,0 +1,26 @@ +P112 README +^^^^^^^^^^^ + +The P112 is notable because it was the first of the hobbyist single board +computers to reach the production stage. The P112 hobbyist computers +were relatively widespread and inspired other hobbyist centered home brew +computing projects such as N8VEM home brew computing project. The P112 +project still maintains many devoted enthusiasts and has an online +repository of software and other information. + +The P112 computer originated as a commercial product of "D-X Designs Pty +Ltd" of Australia. They describe the computer as "The P112 is a stand-alone +8-bit CPU board. Typically running CP/M (tm) or a similar operating system, +it provides a Z80182 (Z-80 upgrade) CPU with up to 1MB of memory, serial, +parallel and diskette IO, and realtime clock, in a 3.5-inch drive form factor. +Powered solely from 5V, it draws 150mA (nominal: not including disk drives) +with a 16MHz CPU clock. Clock speeds up to 24.576MHz are possible." + +The P112 board was last available new in 1996 by Dave Brooks. In late 2004 +on the Usenet Newsgroup comp.os.cpm, talk about making another run of P112 +boards was discussed. David Griffith decided to produce additional P112 kits +with Dave Brooks blessing and the assistance of others. In addition Terry +Gulczynski makes additional P112 derivative hobbyist home brew computers. +Hal Bower was very active in the mid 1990's on the P112 project and ported +the "Banked/Portable BIOS". + |