How can I do to use the 8253 circuit in order to have an exact timing
of my functions?
Is there another way to have a precise measure of time?
MOV AL, 00110100b
OUT $43, al

... but the results are so stranges that I think it don't works...

serrand.xav...@free.fr

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do you want to be able to call a function after every n milliseconds or to
calculate how long it takes to evaluate the function?

if the first Delphi 4 has a timer component which fires every x milliseconds.
If the latter there is a function 'Time' which returns the current time
(according to the system clock).  It can be accurate to milliseconds.

If you need accuracy greater than milliseconds, its back to assembler I guess.

Steve.