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need Help Displaytech 64128A (KS0108) brake
http://forum.lcdinfo.com/viewtopic.php?f=6&t=638		 Page 1 of 1
Author:  Hailo [ Wed May 05, 2004 22:46 ]
Post subject:  need Help Displaytech 64128A (KS0108) brake
Hi,
i have bought the Displaytech 64128A with KS0108 Controller.
Now i have the Problem that the display have a break in the middle. (see Pics link below)
The Paralell port ist set to ECP other dont work with the display.
I have the display Wired likethis. I used for R1 not the 3.9 OHM, i used a 10 Ohm Resistor.

I have also tried with a few of software:

LCD INFO 0.3.2
LCD INFO 0.6
LCD INFO 3
LCD Studio ( with Driver from Henri)
LCD Hype

I thike thats all, ähm :roll: yes thats all...

Oh the +5V i take from the USB port.

pict:
Picturs

Please i need help...
Author:  Henri [ Fri May 07, 2004 18:58 ]
Post subject: 
128x64 KS0108 display has two different controller chips which are driven separately. So there's two 64x64 areas. During the initialization the starting line of the display in vertical direction is set. Maybe it somehow gets set to wrong value in the second controller. No idea why though. All LCDInfo drivers I've made always set it to 0 for both chips.

Timing problems is something that comes to my mind. Have you tried changing the delay value in the LCDInfo driver ?
Author:  Hailo [ Mon May 10, 2004 11:59 ]
Post subject: 
Hi Henri,

yes i also have tryed with some other delays, but i get the same error.
I think it's a Hardware problem. Because i get always other errors.
Now i have a lott of pixel i dont like on the screen, but i have found the resov
for this problem in a other ttrade. I think i will buy a other display.
what do you thik about the sed 1330 controller? I have found a 320x240 pixel
display with the sed1330 controler for 93 eur.

greetings Hailo
Author:  Henri [ Wed May 12, 2004 23:06 ]
Post subject: 
Have you tried the display with other PCs ? But maybe it is some hardware problem in the display.

320x240 display with SED1330 should be a nice display. Only problem with SED133x controllers is that they experience some garbage on the screen if they are written a lot of data fast. This can be seen with LiQuiD-MP3 analyzers for example. And there really isn't solution for this with LPT port connection.
But as there are many happy 320x240 display owners this shouldn't be that bad problem.
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