Read the byte at 0x03fd...

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Guest

Hi,

i want read the byte at this adress : 0x03fd.
It's the adress of the Line Status Register of the port COM1.
There is a bit who signal the end of sending.
I need read this bit but i don't know how do....
Thanks for your help

lamalice.

PS:My program must run over 98,2000 and XP.
 
Hi,

I think you can do that on Win9x but Windows 2k+ has stricter memory
protection and your code will crash. You have two options:

Use Windows API for serial communication
Write a com port driver (or look for ready solutions)

Jan
 
I have already try use the Windows API ( look my question 'signal RTS and
port COM...') without succes.

Where i can find ready solutions ou sample of com port driver?

Thank you.
 
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