ID Number: Q40594
5.x 6.00 6.00a 6.00ax 7.00
MS-DOS
Summary:
If MS-DOS, the ROM BIOS, and the hardware all support COM3: and COM4:
as valid devices, then the MS-DOS MODE command may be used to redirect
communication to access the ports from within Microsoft C. For
example, to redirect COM3: to COM1:, give the following command:
mode COM3:=COM1:
Note: This process has not been tested by Microsoft and is offered
only as a suggestion.
Versions of MS-DOS earlier than MS-DOS version 3.3 do not recognize
the COM3: and COM4: ports. Versions beginning with MS-DOS version 3.3
allow some systems to access the ports, but the ROM BIOS also must
support the extra communications port hardware.
Additional reference words: 5.00 5.10 6.00 6.00a 6.00ax 7.00