COMSET Version 0.1 - Force BIOS Recognition of COM Ports 3 and 4
Freeware from David Macchia.  CP/M-86 version by Kirk Lawrence.


As provided by the manufacturer, CP/M-86 for the IBM PC/XT recognizes only
two serial ports...COM1 and COM2.  An IBM-compatible computer, however, is
capable of supporting up to four serial ports.  COMSET "forces" the compu-
ter's BIOS to acknowledge the existence of COM3 and COM4...even if there
are no actual physical devices assigned to these ports.

While interrupt-driven software (such as communications programs) can always
access COM3 and COM4, whether or not the BIOS recognizes their presence,
having these two additional ports officially "installed" can often minimize
problems...particularly if the physical serial devices which are actually
installed in the computer have been assigned non-contiguous COM port numbers.

To "install" COM3 and COM4: At the prompt, type COMSET and then press ENTER.

COMSET is not a TSR (terminate-and-stay-resident) program, so it doesn't
waste any of your computer's memory.  COMSET simply does its job, and then
exits completely.

For convenience, include COMSET as part of your "power-on command line."
By doing this, COM3 and COM4 will be "installed" automatically each time
you boot the computer.

The CP/M-86 version of COMSET was made by disassembling David Macchia's
DOS freeware program, and then altering to code, as necessary, to make
it compatible with Digital Research's ASM86 assembler.

COMSET.CMD is free.  As is always the case with "freeware," there are no
guarantees whatsoever.  If you use the program, you do so entirely at your
own risk and peril.  Your use of COMSET.CMD shall be prima facie evidence
under law that you understand and accept these terms and conditions.