i used it to interface a parallel port using windows xp's debug program.

i interfaced the D0 - D7 pins with LED

my question is why is it so slow in responding to the commands?

example would be:
-r dx
then set it to 03BC
then

-o 03BC 01 (this would send the lpt port with 01)
(thus one LED is set.)
the result of the above command took almost 15 seconds for me to see the one LED to be on.

when i assembled another program the same problem would occur. the response is slow. i made a program that would count till al = FF and the only thing i see is when the program ends at al = EF.

mov al,00
mov dx,03bc
out dx,al [***]
inc al
cmp al,ff
jnz [***]

note: [***] is just used to denote a marker in a jump command.

my question is why is it slow to respond?is there a way around this?