Vii. Ms-Dos

In MS-DOS, there re two files which can be used, and both are in the first disk (part# P72735) in the DOS subdirectory. These files are:

•DOSSWTCH.com

•F1U125.com

DOSSWTCH.com is a directly executable program. You must follow the syntax in order to invoke the switch to change ports. For example, entering the following,

DOSSWTCH LPT1 A

will cause the switch to set your current computer to connect to Port A.

F1U125.com is a TSR program. Once it is loaded, it stays in memory. You can access it in any non-protected DOS-mode program by pressing both SHIFT keys simultaneously. The following window will pop-up:

To make a selection, hit ENTER, and to go back, hit ESC. You can also change the “Hot Key” from the default L_SHIFT and R_SHIFT, to something else you prefer.

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