LCDInfo.com

Don't know what that 1.7 or 1.9 means, but I don't have those in my bios. I't most likely is a timing problem. Anyways now I can get text to display correctly, but pictures are still little garbled.

Hmm, now I'm getting little confused who is writing this.

Which programs give you the correct text ? And what display is this ? This information might help getting the timing right.

Sorry forget to put my username. I posted those that are under Guest. I have now tryed lcdinfo 0.3.1 and 0.3.2pre4. I'm not 100% sure that this is displaytech lcd, but there are just the same components.

Heh, no problem - names just help following the situation.

And to better know what is working I made this list that should reflect your situation if I understood your postings right.

lcdinfo 0.3.2pre4 - text works - pictures garbled
lcdinfo 0.3.1 - text works - pictures garbled

How about these, especially the visual c++ test ?

Test compiled with visual c++
http://www.skippari.net/lcd/sekalaista/ks0108test.zip

Test compiled with C++ Builder
http://www.skippari.net/lcd/lcd_ks0108_test.zip

Jep just like that. Text works and pictures are garbled.
The first screen from visual c++ test was ok, but in the second screen pixels were little out of their position. So if there should have been straight line | it was \
That c++ builder test was just the opposite. There were problems with the text. Example This was the 2:nd line after lcd initialize. 1SetLCDXY( ,1). All those images except SYMS3 was shown correctly.

well spark consider yourself lucky. all i geton my LCD is Garble. anytime a screen has a picture i get a mostly black screen with a fiew dots here and there. when the screen is all text thescreen claers itself and and that is about it. i think that it is a combination of timing, bios settings, and the DLPortIO drivers. the new produced more wierd things than the ond one did.

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...and the geeks shall inherit the earth (Bob 5:5)

I Just considered that it would be much easier to just buy an lcd that is suppourted by LCDinfo. For now I just have to use text.
Betyway I found datasheets for my LCD http://www.polytronix.com/PG-120602.pdf
Those polytronix lcd's can be found from velleman. Don't know the price for these.

Well , what can i say .....
I've tested my display in 4 machines , 3 of them runing Windows 98 an one Windows XP (the main one) in all of them i got it to work , to make ir work i installed the Port95nt driver set , and confiures and executed LDC Info and the lcd_ks0108_test.zip , working ok in all the machines ,as for the bios settings they were all in the defaults in 2 machines(spp /epp) and in the other two (one with 98 and the main with XP) are with EPP 1.9 (the 1.9 means thh version of the protocol) , form this i think i can conclude there's something very wrong with your displays , it could be the timing problem ( hope that's it) or the other option is that maybe the display is sort off malfunctioning and maybe by replacing it ,the problem would be solved.

For a reference , the display i'm using is an Datainternational DG-12864-19 , it has a separate power suply from the PC due to the need of a -8volt contrast drivind voltage and a -20 lcd driving voltage .

Here are some pictures off the screen and the power suply







If anyone needs some help tha i can give just send me a private message.
REgards Samtech

The problems Spark is having sound very much what I was having in the beginning. And because MarkusM's prog works it should be a timing problem.

computergeekguy's problems could also be related to timing although there may be something else wrong too. As something is written to the display DLPortIO drivers are probably working. I don't think anything would be written to the display without the drivers. Have you got the MarkusM's program working ? It can be found here: http://www.cplayer.net/dsptech/index_eng.html

I know I promised some test versions with different timings this week but I've just been too busy with some work so I haven't got anything done yet. Now I'm too tired to do anything tonight but let's see what next week brings along. No promises this time though.

well yeah stuff gets sent to the LCD just nothin decipherable. i tried MarkusM's programs and they produce the same thing as LCDinfo and the test program. i wouldn't be suprised at a manufacturing error. another display that i purchased from crystalfontz fried itseld as soon as i plugged it in. it was really sad a 60 (US)dollar LCD fried before it could display anything. oh well i have another and it works beautifully. the only problem is that I WANT THIS LCD WORKING!!! i bought it and soon after i had removed the static bag i realized that crystalfontz would not take it back!!! anyway it should work. i have done nothing to it. for at least 4 months it has been in a static bag on my shelf. anyway i sent henri the pictures of the LCD displaying its specialty with the parallel port in normal mode with the address at 378. oh and BTW it is trying to display the default gif that markusM provided. could this be a Win2k problem??

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...and the geeks shall inherit the earth (Bob 5:5)

Picture computergeekguy sent me:


Hmm, don't know what to say to this. I might expect something like this if some of the data / control lines were connected wrong but I think you have already checked them many times. We'll have to see how the new timings are going to affect this.

You are the first I know who has used a Crystalfontz display with LCDInfo but more experiences from Crystalfontz users should be coming soon. Maybe you should ask in the Crystalfontz forum if someone has a display working ?

Ok, that also hapened some times to me (still does but rarely) that is due to electromagnetic interferences, for example if i conect the display with the power plug to the wall too slow (making some bad contact momentarely it hapens this) or by touching the paralel port pins with the fingers , it also shows some weird things on the screen , but as soon as i disconect ans reconect is works great , maibe the resolution to your problem is to make the poweron reset circuit i've seen in a conect scheam in here.

Samtech

hey i sort of had an inkling that i should have mad that circuit but i was impaitent, now i will though. could it also be that the LCD is powered from another powersuply instead of the one for my main system? also i am thinking that it might be the six foot parallel cable that i am using to connect the LCD. are some of the signals being lost in the cable?? i didn't think that this would be a problem but i could be wrong. i am a little strapped for cash because of christmas but now that i know i will get to it as soon as i can. thanks for the ideas.

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...and the geeks shall inherit the earth (Bob 5:5)

No need to thank , i'm glad to help

The external poer suply it may ot be the problem , mine is suplyed externaly , as for the cble lenght sorry for the ignorance but six foot is how many Centimeters ?? , my cable has about a 80 Cm , as for the supectability to lost of signal , it mayno lose it , but cause interfearances with other devices (such as my wireless mouse going crazy) and /ora acept interfearances , losso of data only if the cable is a lot longer than this

Samtech

so ummmmm how much is alot?? i measured the cable again (metric style) and it is 183cm ~ 6ft long is this bad?? other than that i wish that i had a wireless mouse. now i am glad that i don't own one.
hey Henri are you sure that your software is written for my display?? i really think that my display has some wierd controller on it which would causing the strange pictures.

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...and the geeks shall inherit the earth (Bob 5:5)