DOS ain't dead - HX/OGLTEST error

HX/OGLTEST error (Users)

posted by Japheth , Germany (South), 28.05.2011, 08:31

> Cool that the mystery is solved, but now i'm a bit confused.
> (This is where my lack of video-hardware and programming
> knowledge shows up!)
>
> > VESA32 cleared the buffer located in real-mode,
>
> Ok, maybe i'm misunderstanding, but my code *was* all real mode
> (16-bit)... and the interrupt did *not* clear the buffer -- the
> call failed and it didn't change the buffer at all! I set the
> buffer up with 256 bytes of "x" characters, ran the VESA BIOS
> 4F01h Int 10h call, and then looked at the buffer -- no change,
> still 256 bytes of "x" characters.

Sorry for my very sloppy usage of terminology! cm described what I "meant" already, but I want to add that my fragment "copy the contents back to protected-mode" is absolute nonsense if taken literally. In fact, with "protected-mode" I meant "extended memory used in protected-mode", and "real-mode" is to be translated to "conventional memory used in real-mode".

> > CHIPSET/CARD VBE RETRN DESC ES:DI BUFF > ---------------------------- --- ----- ---- ----------- > Intel 865G 3.0 014Fh fail unchanged > Intel 845G 3.0 014Fh fail unchanged > NVidia GeForce4 MX440 (NV18) 3.0 004Fh succ data filled > NeoMagic MagicGraph 256AV 2.0 014Fh fail unchanged > Cirrus Logic GD-5436/46 1.2 014Fh fail 0-filled >

Thanks! Very unsurprisingly I tested the VESA stuff on a NVidia machine. I guess I should change this habit.

---
MS-DOS forever!

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Complete thread:

HX/OGLTEST error - Doug, 19.05.2011, 18:37 (Users)
- HX/OGLTEST error - Rugxulo, 19.05.2011, 22:34
  - HX/OGLTEST error - RayeR, 20.05.2011, 01:11
    - HX/OGLTEST error - Doug, 20.05.2011, 06:31
- HX/OGLTEST error - Japheth, 20.05.2011, 06:35
  - HX/OGLTEST error - Doug, 23.05.2011, 07:54
    - HX/OGLTEST error - Japheth, 23.05.2011, 09:25
    - HX/OGLTEST error - RayeR, 23.05.2011, 19:10
      - HX/OGLTEST error - Doug, 24.05.2011, 18:55
        HX/OGLTEST error - RayeR, 25.05.2011, 00:04
        HX/OGLTEST error - Doug, 25.05.2011, 17:42
        HX/OGLTEST error - RayeR, 26.05.2011, 00:48
        HX/OGLTEST error - Japheth, 25.05.2011, 07:06
        HX/OGLTEST error - Doug, 26.05.2011, 08:01
        HX/OGLTEST error - Japheth, 26.05.2011, 19:26
        HX/OGLTEST error - RayeR, 26.05.2011, 21:35
        HX/OGLTEST error - Doug, 26.05.2011, 22:40
        HX/OGLTEST error - Japheth, 27.05.2011, 07:05
        HX/OGLTEST error - Doug, 28.05.2011, 00:51
        copying buffer contents to protected mode - ecm, 28.05.2011, 01:09
        HX/OGLTEST error - Japheth, 28.05.2011, 08:31