Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-11 Thread Rugxulo
Hi, On Thu, Jun 11, 2015 at 12:52 PM, Dale E Sterner sunbeam...@juno.com wrote: Most of my best dos software requires vesa. Your link was extremely good. There's a lot of (defunct?) legacy out there, especially for DOS. So we're really only scratching the surface. I wish it was in a nice

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-11 Thread TJ Edmister
On Thu, 11 Jun 2015 14:22:03 -0400, Rugxulo rugx...@gmail.com wrote: No, I don't think so. You'd (usually) have to use raw assembly. Maybe you could do limited stuff with debug, dunno. (Obviously you can call interrupts with debug or do a few other arcane things, but it's not nearly as

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-10 Thread John Hupp
On 6/9/2015 6:31 PM, Eric Auer wrote: Hi John, ... Does mode con lines=34 require anything besides VESA support? I concluded from my reading that it did not need DISPLAY.SYS or [ANSI] Here is a quick trick with mode: MODE CON LINES=1 (or any other weird value) lists possible values in the

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-10 Thread Rugxulo
Hi, On Wed, Jun 10, 2015 at 1:50 PM, John Hupp free...@prpcompany.com wrote: On 6/10/2015 10:28 AM, John Hupp wrote: I am nonetheless happy to have a few things to work with to better match an LCD's aspect ratio: Eric's trick, for instance, on cards that support it. And I can also report

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-10 Thread John Hupp
On 6/10/2015 10:28 AM, John Hupp wrote: It seems like I still have some things to try, however. Rugxulo suggested two utilities that may or do use other methods: setmxx and svgatextmode. An important discovery -- the Oak ISA card that was the source of so much of this discussion appears

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-10 Thread Rugxulo
Hi, On Tue, Jun 9, 2015 at 3:50 PM, Dale E Sterner sunbeam...@juno.com wrote: Another dumb question; are there any good books out there about Vesa.? You mean actual physical books? Just documenting the spec or demonstrating use or example programs or ... ? I could be wrong, but I assume you

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Mateusz Viste
On 09/06/2015 18:46, John Hupp wrote: To fix that I suppose I would need to come up with a Vesa driver for the card, and would welcome any suggestions. The obvious one that comes immediately to mind is SciTech Display Doctor, it supports plenty of graphic cards, and provides a standard VESA

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread John Hupp
On 6/7/2015 7:46 PM, Eric Auer wrote: Hi John, Though I cited Edit, and the mode suggestion might improve that, I imagine that the improvement would be lost if I started a game or anything else that runs in a graphical mode. As long as the game lets you make a CHOICE between several

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Felix Miata
John Hupp composed on 2015-06-09 12:46 (UTC-0400): To fix that I suppose I would need to come up with a Vesa driver for the card, and would welcome any suggestions. Pull the Oak and put in a Trident or ATI, best the latter, which would work well if you want to boot Linux on that machine.

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Rugxulo
Hi, On Tue, Jun 9, 2015 at 12:01 PM, Mateusz Viste mate...@viste.fr wrote: On 09/06/2015 18:46, John Hupp wrote: To fix that I suppose I would need to come up with a Vesa driver for the card, and would welcome any suggestions. The obvious one that comes immediately to mind is SciTech

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Rugxulo
Hi, On Tue, Jun 9, 2015 at 11:46 AM, John Hupp free...@prpcompany.com wrote: It seems that mode con lines=34 should display text mode nicely on the 4:3 LCD. And reading up on MODE, I saw that 34 lines requires VESA support. This vintage setup has a circa 1991 16-bit ISA video card,

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Felix Miata
John Hupp composed on 2015-06-09 15:42 (UTC-0400): Rugxulo also suggests this in a follow-up post. I have now tried univbe 6.7 and sdd 6.53. Both explicitly support the Oak chipset. Both report that they provide this card with VESA 3.0 support including 3 graphics modes (though so far I

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread John Hupp
On 6/9/2015 1:08 PM, Felix Miata wrote: John Hupp composed on 2015-06-09 12:46 (UTC-0400): To fix that I suppose I would need to come up with a Vesa driver for the card, and would welcome any suggestions. Pull the Oak and put in a Trident or ATI, best the latter, which would work well if you

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread John Hupp
On 6/9/2015 1:01 PM, Mateusz Viste wrote: On 09/06/2015 18:46, John Hupp wrote: To fix that I suppose I would need to come up with a Vesa driver for the card, and would welcome any suggestions. The obvious one that comes immediately to mind is SciTech Display Doctor, it supports plenty of

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Dale E Sterner
Another dumb question; are there any good books out there about Vesa.? cheers DS On Tue, 9 Jun 2015 13:57:05 -0500 Rugxulo rugx...@gmail.com writes: Hi, On Tue, Jun 9, 2015 at 11:46 AM, John Hupp free...@prpcompany.com wrote: It seems that mode con lines=34 should display text mode

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Felix Miata
Dale E Sterner composed on 2015-06-09 16:50 (UTC-0400): Another dumb question; are there any good books out there about Vesa.? I had one. I loaned it to a nephew. He donated it to the Clearwater Florida Public Library. :-( If it's still there, one could probably get it through the lending

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread John Hupp
On 6/9/2015 4:05 PM, Felix Miata wrote: John Hupp composed on 2015-06-09 15:42 (UTC-0400): Rugxulo also suggests this in a follow-up post. I have now tried univbe 6.7 and sdd 6.53. Both explicitly support the Oak chipset. Both report that they provide this card with VESA 3.0 support

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Eric Auer
Hi John, ... Does mode con lines=34 require anything besides VESA support? I concluded from my reading that it did not need DISPLAY.SYS or [ANSI] Here is a quick trick with mode: MODE CON LINES=1 (or any other weird value) lists possible values in the error message. MODE CON LINES=30 does

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread John Hupp
Does mode con lines=34 require anything besides VESA support? I concluded from my reading that it did not need DISPLAY.SYS or N/ANSI.SYS, but if it does, then I've been tripping over fundamentals. --

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread John Hupp
On 6/9/2015 5:20 PM, John Hupp wrote: On 6/9/2015 1:08 PM, Felix Miata wrote: John Hupp composed on 2015-06-09 12:46 (UTC-0400): To fix that I suppose I would need to come up with a Vesa driver for the card, and would welcome any suggestions. Pull the Oak and put in a Trident or ATI, best

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-09 Thread Dale E Sterner
Every search I've done for Vesa book came up empty. Libraries just don't keep books for long. If the copyright is over 5 years old they toss it - really dumb. There's alot of good old stuff. cheers DS On Tue, 09 Jun 2015 17:11:06 -0400 Felix Miata mrma...@earthlink.net writes: Dale E Sterner

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-07 Thread John Hupp
Thanks, Eric. Though I cited Edit, and the mode suggestion might improve that, I imagine that the improvement would be lost if I started a game or anything else that runs in a graphical mode. In the meantime, I found this very dense thread on vogons.org:

[Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-07 Thread John Hupp
With FreeDOS 1.1 installed directly on real hardware, and testing with two different LCD monitors and at least half a dozen different video cards, I find that in every case there are vertical bands or fat lines across the screen, visible as fuzziness on the black white display during boot,

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-07 Thread Eric Auer
Hi! If you are sure that this is not an issue of your VGA or HDMI or DVI cable to the monitor, then I assume that what you are seeing is an artifact of your screen trying to zoom from the default resolution of DOS text mode to the native resolution of the screen. You could use the MODE tool of

Re: [Freedos-user] Vertical lines/bands in LCD display but OK on CRT

2015-06-07 Thread Eric Auer
Hi John, Though I cited Edit, and the mode suggestion might improve that, I imagine that the improvement would be lost if I started a game or anything else that runs in a graphical mode. As long as the game lets you make a CHOICE between several resolutions, you will again have the