[vdr] AW: Re: GraphLCD-plugin Hardware problems

["Roland Praml" <pram2000@web.de>]

> I've never had a single glitch/pixel error on my graphlcd (128x64 with
> KS0108 driver). The only differences I can see is that I have a shorter
> cable (~0.5m), although I doubt that's the cause, and that I'm using LPT
in
> plain standard mode (no EPP/SPP). My cable is plain, too, no supporting
> parts besides two resistors that "emlulate" the poti (is that the right
> term in english, too???) for contrast (which is totally unrelated to data
> transfer).

I've tracked down the problem and I think it's a BIOS problem because my
Oszi sows me always activity on the Data lines (even during uncompressing
kernel) So I think the BIOS does some scanning on the LPT-port (maybe
plug&play)
Maybe I've to tie Ack, Busy, Paper Error TO GND or +5V.

I'll post the results
Roland



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