DOS ain't dead - GVFM / BP7 / FreeDOS

GVFM / BP7 / FreeDOS (Announce)

posted by jaybur , UK, 21.12.2007, 11:35

> > I'll probably spend most of today trying to find the cause of this
> behaviour.
>
> And if you can't reproduce it and don't find the bug ... a debug version
> will be neccessary :-|

Yes. I'll get my virtual FreeDOS machine running, then compile a debug version of GVFM and point you and Laaca at a it.

> > Why? Unsigned 32 bit variables are seldom needed. The GV RTL does
> provide some support for them though.
>
> I avoid signed whenever possible ...

They have their uses. And even with BP7, you can define an unsigned type of
type Cardinal: 0..2147483648;
Which is exactly what early versions of Delphi did.

> Japheth wrote:
>
> > It's not recommended to do so, however, because 4bpp modes won't work
> anymore with WC being set.
>
> The "plained" modes only?

Yes, it just affects the plainar video modes. They use special VGA 8-bit hardware registers that often need to "primed" first by reading the video RAM location. I suspect the write combining messes up the order of the reads and writes or something. That doesn't explain why my nVidia 7600 card is happy with a WC A0000-AFFFF region and plainar video modes though. :confused:

> Jaybur wrote:
>
> > And this helps me set WC for the VGA area because...
>
> ... 1.3 is avaiable since today, yesterday it wasn't :-P

:-D

> > can't do a proper install on my AMD because the FreeDOS installer just
> > crashes. Doesn't like my 2GB of RAM maybe, I don't know.
>
> YES, some installers do crash (1.0 also ?

Yep.

Post reply

Complete thread:

Graphic Vision File Manager 2.63 - jaybur, 18.12.2007, 17:01 (Announce)
- Graphic Vision File Manager 2.63 - DOS386, 19.12.2007, 00:05
  - Graphic Vision File Manager 2.63 - DOS386, 19.12.2007, 00:55
    - Graphic Vision File Manager 2.63 - jaybur, 19.12.2007, 01:39
      - Graphic Vision File Manager 2.63 - DOS386, 19.12.2007, 01:52
        Graphic Vision File Manager 2.63 - jaybur, 19.12.2007, 02:36
        Graphic Vision File Manager 2.63 - Japheth, 19.12.2007, 03:04
        GVFM -- Windows detection - Rugxulo, 19.12.2007, 03:16
        Graphic Vision File Manager 2.63 - DOS386, 19.12.2007, 03:31
        Graphic Vision File Manager 2.63 - Japheth, 19.12.2007, 11:02
        Graphic Vision File Manager 2.63 - jaybur, 19.12.2007, 03:46
        Windaube :-((( - DOS386, 19.12.2007, 04:01
        Windaube :-((( - jaybur, 19.12.2007, 04:24
        Windaube / HDPMI=??? / GVFM - DOS386, 19.12.2007, 20:54
        Windaube / HDPMI=??? / GVFM - jaybur, 19.12.2007, 22:40
        "A" bug / BP7 / screenshots - DOS386, 19.12.2007, 23:41
        "A" bug / BP7 / screenshots - jaybur, 20.12.2007, 01:09
        "A" bug : some results / BP7 / "a" and "p" - DOS386, 20.12.2007, 01:37
        "A" bug : some results / BP7 / "a" and "p" - Laaca, 20.12.2007, 11:16
        "A" bug : some results / BP7 / "a" and "p" - jaybur, 20.12.2007, 11:57
        "A" bug : some results / BP7 / "a" and "p" - jaybur, 20.12.2007, 18:24
        "A" bug : some results / BP7 / "a" and "p" - jaybur, 20.12.2007, 12:23
        FreeDOS a bad DOS? - Japheth, 20.12.2007, 12:36
        "A" bug / BP7 / screenshots - Laaca, 20.12.2007, 09:56
        "A" bug / BP7 / screenshots - jaybur, 20.12.2007, 11:53
        GVFM source - jaybur, 20.12.2007, 12:03
        GVFM source - rr, 20.12.2007, 17:27
        GVFM source - Laaca, 20.12.2007, 21:49
        GVFM / BP7 / FreeDOS - Rugxulo, 20.12.2007, 23:16
        GVFM / BP7 / FreeDOS - jaybur, 21.12.2007, 01:05
        GVFM / BP7 / FreeDOS - DOS386, 21.12.2007, 02:55
        GVFM / BP7 / FreeDOS - jaybur, 21.12.2007, 11:35
        GVFM / BP7 / FreeDOS - DOS386, 21.12.2007, 22:53
        GVFM / BP7 / FreeDOS - Rugxulo, 21.12.2007, 23:13
        GVFM / BP7 / FreeDOS - jaybur, 21.12.2007, 23:37
        Updating kernel - Laaca, 22.12.2007, 10:25
        Updating kernel - Rugxulo, 24.12.2007, 14:27
        GVFM / BP7 / FreeDOS - jaybur, 22.12.2007, 14:48
        GVFM / BP7 / FreeDOS - jaybur, 21.12.2007, 23:24
        GVFM / BP7 / FreeDOS -- drive A: bug?? - Rugxulo, 24.12.2007, 14:22
  - Graphic Vision File Manager 2.63 - jaybur, 19.12.2007, 01:22
    - Graphic Vision File Manager 2.63 - DOS386, 19.12.2007, 01:45
      - Graphic Vision File Manager 2.63 - jaybur, 19.12.2007, 03:01
  - Graphic Vision File Manager 2.63 - jaybur, 19.12.2007, 02:49
    - Graphic Vision File Manager 2.63 - DOS386, 19.12.2007, 03:42
  - Graphic Vision File Manager 2.63 - Japheth, 20.12.2007, 12:24
    - Graphic Vision File Manager 2.63 - jaybur, 20.12.2007, 13:08
      - Graphic Vision File Manager 2.63 - Japheth, 20.12.2007, 13:51
        Graphic Vision File Manager 2.63 - jaybur, 20.12.2007, 14:33
        VESAMTRR v1.3 - Japheth, 20.12.2007, 15:39
        VESAMTRR v1.3 - jaybur, 20.12.2007, 15:52
        VESAMTRR v1.3 - jaybur, 20.12.2007, 18:01
        VESAMTRR v1.3 - Japheth, 20.12.2007, 19:51
        VESAMTRR v1.3 - jaybur, 20.12.2007, 20:20
        VESAMTRR v1.3 - Japheth, 21.12.2007, 13:34
        VESAMTRR v1.3 - jaybur, 21.12.2007, 13:50
- Graphic Vision File Manager 2.63 (under DOSBox) - Rugxulo, 19.12.2007, 02:53
  - Graphic Vision File Manager 2.63 (under DOSBox) - jaybur, 19.12.2007, 03:19