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Hi ScotDance;<br />
<br />
I've got three questions.<br />
<br />
1. Do you need help on the COM port i/o, TSRs or both?<br />
2. Are you able to alter the other program?<br />
3. How fast is the data coming in the COM port? (only applicable if you want help on the COM port i/o).<br />
<br />
Matt
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Hi ScotDance;

I've got three questions.

1. Do you need help on the COM port i/o, TSRs or both?
2. Are you able to alter the other program?
3. How fast is the data coming in the COM port? (only applicable if you want help on the COM port i/o).

Matt

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MathewL,<br />
1. On both.<br />
2. Yes can alter the other program.<br />
3. 9600 baud rate.
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MathewL,
1. On both.
2. Yes can alter the other program.
3. 9600 baud rate.

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My problem is that I need to right a file being read from the com port of a DOS based machine. &nbsp;The write program has to be a TSR program as I have to run another important program at the same time which cannot be closed down to receive the file.<br />
Any ideas on how to do this??<br />
<br />
ScotDance<br />
ps. Code would be good if possible.
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My problem is that I need to right a file being read from the com port of a DOS based machine.  The write program has to be a TSR program as I have to run another important program at the same time which cannot be closed down to receive the file.
Any ideas on how to do this??

ScotDance
ps. Code would be good if possible.

Writing a file from a com port

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.