Oyvind Kaurstad wrote: > My current PC has a bidirectional port, but I don't know how to read it. > Is there some kind of direction bit I can set from my C program so that I can > use the inportb function? Hello, search the web and look for IEEE1284 (I think) specification of EPP protocol. This protocol can transfer up to 2MB/s through modern parallel port of PC. And yes, most of the new parallel/serial controllers have hardware/BIOS support for this protocol. Protocol is commonly used for LAN cards and SCSI adaptors which can be connected to parallel port. Best regards PavelK -- **************************************************************************** * Pavel Korensky (pavelk@dator3.anet.cz) * * DATOR3 Ltd., Modranska 1895/17, 143 00 Prague 4, Czech Republic * * PGP key fingerprint: 00 65 5A B3 70 20 F1 54 D3 B3 E4 3E F8 A3 5E 7C * ****************************************************************************