The cpm platform
=================
cpm is an i80-based BSP that generates CP/M executables that can be run on any
CP/M-compliant machine.
CP/M has special needs in many ways, the main one being that it doesn't
support byte-accessible files --- only complete 128-byte sectors can be read
or written. The port's read/write/open/close/lseek etc should handle this
transparently, but trying to write a fragment of a sector will involve a
read/modify/write cycle. No buffering is done (that's stdio's job).
File descriptors 0, 1 and 2 represent the console, as usual.
In addition, there's a special interface to give applications direct access
to CP/M. See include/cpm.h for details.
Floating point is not supported and attempts to use floating-point numbers
will cause the program to terminate.
Example command line
====================
ack -mcpm -O -o cpm.com examples/paranoia.c
The file cpm.com can then be run.
(Although note that Paranoia is very big, and you'll need a CP/M machine with
lots of memory for it to fit. Which it does, just.)
David Given
dg@cowlark.com
