you're right. i made a test screen with columns 1 and 2 black, and there you are ... columns 127 and 128 are black, too
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i never noticed this because my screens are symmetrical and have a 2 pixel border around them
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| Author: | Hase [ Tue Jan 07, 2003 15:07 ] |
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Götz wrote: With PicView PVG 121202BYN 128x128 6x8 Font there are the last 2 columns are overwritten by the first 2.
hmmm, I'm using the exact same display and it works fine. maybe you should check your wiring? |
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| Author: | Götz [ Tue Jan 14, 2003 11:53 ] |
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Hase wrote: Götz wrote: With PicView PVG 121202BYN 128x128 6x8 Font there are the last 2 columns are overwritten by the first 2. hmmm, I'm using the exact same display and it works fine. maybe you should check your wiring? I do not think so, because have a look at the pictures at http://www.skippari.net/phpBB2/viewtopic.php?t=14&postdays=0&postorder=asc&start=0 That is the same effect. On 2.,3. and 4. picture you can see that last 2 pixel columns are the same as first 2. I have one testboard for 128x128 and 160x128 and on the 160x128 there is no such effect. Götz |
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| Author: | Henri [ Tue Jan 14, 2003 18:18 ] |
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I think I know the reason for this. Some calculations: We have 128 pixels and 6 pixel wide font. 128/6 = 21,33 I have the BYTES_PER_ROW set to 21 in the current versions and this leaves 1/3 bytes extra that happens to be the 2 pixels. I now changed this to 22 in the code so this may be fixed in the next version. |
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| Author: | Hase [ Tue Jan 14, 2003 18:25 ] |
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you're right. i made a test screen with columns 1 and 2 black, and there you are ... columns 127 and 128 are black, too .
i never noticed this because my screens are symmetrical and have a 2 pixel border around them
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| Author: | Henri [ Tue Jan 14, 2003 18:47 ] |
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Yep, this is one situation where a display to test would be great as I'm still not sure how it will behave. 160x128 6x8 font display may have this same problem too. |
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| Author: | Götz [ Tue Jan 14, 2003 18:55 ] |
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Henri wrote: 160x128 6x8 font display may have this same problem too.
I'm not able to test this because my display is hardwired to 8x8. May it cause problems when I cut the FS line from ground and wire it to +5V? |
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| Author: | Henri [ Thu Jan 16, 2003 11:40 ] |
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Götz wrote: Henri wrote: 160x128 6x8 font display may have this same problem too. I'm not able to test this because my display is hardwired to 8x8. May it cause problems when I cut the FS line from ground and wire it to +5V? No problem, I believe someone else could test that. Depending of the display wiring FS line to High may not be enough as also the MD lines affect the usable font size. But changing these shouldn't be any harder than changing the FS line. |
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| Author: | Götz [ Fri Jan 17, 2003 12:26 ] |
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Henri wrote: Götz wrote: Henri wrote: 160x128 6x8 font display may have this same problem too. I'm not able to test this because my display is hardwired to 8x8. May it cause problems when I cut the FS line from ground and wire it to +5V? No problem, I believe someone else could test that. Depending of the display wiring FS line to High may not be enough as also the MD lines affect the usable font size. But changing these shouldn't be any harder than changing the FS line. It works. I breaked the FS1 line to GND und wired it to unused FS pin 19 and set it up +5V. In 128x128 6x8 or 240x64 mode there is no problem with overwrited columns. Only problem is the first 64 rows are correct last 64 rows are scrambled. http://www.locamation.com/locam01/02_IndustrialComputers/Z_Displays/Datasheets/TLX-1013-EO.PDF Götz |
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| Author: | Henri [ Fri Jan 17, 2003 21:43 ] |
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Sorry I didn't quite get what displays work and which don't. Götz wrote: In 128x128 6x8 or 240x64 mode there is no problem with overwrited columns. So are there any other problems with these displays ? And what fixed the column problem with the 128x128 display ? Quote: Only problem is the first 64 rows are correct last 64 rows are scrambled.
With the 160x128 display and in both 6x8 and 8x8 modes ? |
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| Author: | Götz [ Mon Jan 20, 2003 11:03 ] |
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Henri wrote: Sorry I didn't quite get what displays work and which don't.
Götz wrote: In 128x128 6x8 or 240x64 mode there is no problem with overwrited columns. So are there any other problems with these displays ? And what fixed the column problem with the 128x128 display ? Quote: Only problem is the first 64 rows are correct last 64 rows are scrambled. With the 160x128 display and in both 6x8 and 8x8 modes ? OK,OK 
Display PicView PVG 121202BYN 128x128 : overwritten last 2columns. Display Toshiba TLX-1013-EO 160x128 6x8: last 64 rows are scrambled no overwritten last 2columns for a 128x128 picture. Some pictures: http://pcitr4.fb10.tu-berlin.de/liste/index.html |
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| Author: | GROUPGLOBAL [ Mon Jan 20, 2003 16:44 ] |
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Götz wrote: Henri wrote: Sorry I didn't quite get what displays work Some pictures: http://pcitr4.fb10.tu-berlin.de/liste/index.html there are no pictures  
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| Author: | Götz [ Mon Jan 20, 2003 17:13 ] |
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GROUPGLOBAL wrote: Götz wrote: Henri wrote: Sorry I didn't quite get what displays work Some pictures: http://pcitr4.fb10.tu-berlin.de/liste/index.html there are no pictures Ups, sorry. Now it 's right. |
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| Author: | Henri [ Mon Jan 20, 2003 18:04 ] |
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Götz: Would you email me so that I can send you a test version ? |
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