Opening CP/M files (.asm/.bas)

From: allisonp <allisonp_at_world.std.com>
Date: Thu Apr 27 17:55:13 2000

>Cp/M was a cross-platform operating system with several layers to provide
>support for any platform for which the base functions of CP/M were
>compiled. In other words, if your machine boots cp/m then you can run the
>vast majority of CP/M programs. Some you won't. A good example of a
>situation in which a program cannot run is if it takes advantage of
>non-standard system calls to access the video subsystem. There are quite
>a few of these programs but most are commercial such as CPT system
>accounting, spreadsheet and word processing. The CPT had a very custom
>full-page physical display.


Well thats only true if unique BIOS calls or direct IO was done. If you
used the
standard BDOS calls then compatability was assured save for sillyness like
terminal control sequences.

The worst offenders for this were the modem programs as they needed speed
and CPM could but often didn't have interrupt driven IO or IOBYTE
implemented.

>Probably the most important setting in CP/M is your terminal settings.
>CP/M software will run on anything but does have to be informed as to what
>termninal type (ie ADM3a, Soroc, Televideo, Etcetera) in order to operate
>correctly. --


Often taken care of in the install program.
Received on Thu Apr 27 2000 - 17:55:13 BST