ECP PROBLEM(PLEASE REPLY)

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aamiralikhoja

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hello

I am working on ecp port .using dos as O.s and watcom c compiler. The interface card works well


on compaq p-3 pc but when same programm runs on P-4 PC THE DATA IS NOT CORRECTS


DATA WHICH RPEATS AFTER 80 BYTES REPEATS AFTARE 40 BYTES WHAT IS THE POSSIBLE PROBLEM
 

Do you control the ecp port in interrupt mode?
If in polling mode, time may be a problem.
 

of course i want controll ecp port in interrupt mode for fast trasnfer as data

starts missing in windows at 16kilo.bytes/sec
 

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