I have a problem trying to read from the parallel port using the port_in instruction from the ackport.dll extension.
i need to read from 2 parallel ports at once for my project.
for lpt2 i had to add a pci parallel port card.
so, lpt1 reads just fine, but i can't read lpt2. i think it has to something to do with the port address. windows tells me lpt2 it's at the 0xED68 address, and won't let me change it. and the port_in instruction only accepts a port number of maximum 4096.
so is there any way i will be able to read from the address i have now?
thanks in advance

joaquin

I don't think that a port address "0xED68" exists. Normally, lpt1 is 0x378 and lpt2 is 0x278.

The instruction has no 4096 limit, but the Pentium normally has a limit of 4096 ports - although I'm not 100% sure if some new processors don't support more ports.

Other port Adress :
3BCh - 3BFh Used for Parallel Ports which were incorporated on to Video Cards - Doesn't support ECP addresses.
The 3BCh base address was originally introduced used for Parallel Ports on early Video Cards. This address then disappeared for a while, when Parallel Ports were later removed from Video Cards. They has now reappeared as an option for Parallel Ports integrated onto motherboards, upon which their configuration can be changed using BIOS.