Hi all,

I am working on a simple program (for a PC) that needs to talk to a PIC
over the PC serial port. This is something that I have done many times, but
this time, I am developing it on a Win 98 machine and it needs to run on a
Windows XP machine that I do not yet have. I will be the only one using
this program, and I'd like to be able to run it on older computers, too, so
I'd like to avoid making it a windows program. Can a regular DOS program
run under XP and access the serial port? Can it modify the PC's interrupt
vector table to install a serial port handler (which my standard DOS-based
serial routines do)?

Thanks,

Sean

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