Re: [PARPORT] reading data from the parport?


Clemens Kirchgatterer (clemens@root.at)
Wed, 05 May 1999 21:16:56 +0200


Tim Waugh wrote:

> On Wed, 5 May 1999, Clemens Kirchgatterer wrote:
>
> > i have to read the lcd status from the data lines bovor i can write
> > (or read) data and commands to the panel, but everytime i read the
> > PORT_BASE+0 i get the last written byte back.
> > [...]
> > i have activated EPP-Mode in the BIOS setup, so everthing should be OK.
>
> EPP isn't the same as bidirectional. What happens if you set it so PS2 in
> the BIOS?
>
> Tim.
> */

my BIOS Setup has no option for PS2 but:

NORMAL (assuming this is SPP -> unidirectional)
EPP
ECP
ECP+EPP

ive tested them all, no diffrence!

is it possible that some chipsets must be programmed diffrent? e.g. setting
bit 6 in the control reg.

clemens

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This archive was generated by hypermail 2.0b3 on Wed 05 May 1999 - 15:21:22 EDT