control register in LPT port

[e.mfr]

lpt control register

I need information about control register in LPT port
(pin 1,14,16,17)
which is input or output?
can i use data register in input status?

thanks

 

[SivaC]

inpout lpt registry

check the following
**broken link removed**
**broken link removed**

Check the "Bi-directional Ports" in the second site (beyond logic). You need to enable bidirectional mode. But normal printers do not use them as inputs.

have a nice day
SivaC

 

[yogi]

lpt + control register

join yahoo group- parallelport

from files download Parallel Port For u

read it , then u will get it

 

[yogi]

lpt control data register

control port and data port are bi-directional

 

[e.mfr]

register of lpt

can u tell me How I change control & data register to input?

tanx

 

[BigFreddy]

lpt port registers

First, your port must be configured as a bi-directional (PS/2) in BIOS setup program. Second, you must manipulate with the direction control bit (5) of control register:
0 - outputs enabled
1 - outputs disabled

Also, you may configure your port as ECP, or as ECP+EPP ( but not EPP only!).
In this case you must set an appropriate bit mask in 5,6,7 bits of ECR register (base address + 402h for standard port, may be vary for PCI LPTs).
000-SPP (standard)
001-PS/2 (bi0directional)
011-ECP
100-EPP