dtrg 54ce3f451b Configured distr system for the 6.0pre3 release. 17 年之前
..
include be8baf3da6 Added cpm platform. 17 年之前
libsys 6127ddf024 Fixed the trap code to write out the error message correctly. 17 年之前
.distr 54ce3f451b Configured distr system for the 6.0pre3 release. 17 年之前
README a7323e1a8b Documented floating-point status. 17 年之前
boot.s c9d7f7ef23 Added suppot for BSS clearing and command line parsing. 17 年之前
descr 54ce3f451b Configured distr system for the 6.0pre3 release. 17 年之前
pmfile be8baf3da6 Added cpm platform. 17 年之前

README

# $Source$
# $State$
# $Revision$


The cpm platform
=================

cpm is an i80-based BSP that generates CP/M executables that can be run on any
CP/M-compliant machine.

This port only implements a very limited set of syscalls --- and most of those
are stubs required to make the demo apps link. File descriptors 0, 1 and 2
represent the console. All reads block. There's enough TTY emulation to allow
\n conversion and local echo (but it can't be turned off).

There's a special, if rather minimilist, interface to give applications access
to CP/M. See include/cpm.h for details.

IEEE floating point is not available. 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