DOS ain't dead - Considering MS-DOG (inside NTVDM)

Considering MS-DOG (inside NTVDM) (Users)

posted by marcov, 02.08.2011, 18:56

> > Very wrong. Ability to run a 16-bit OS has nothing to do with
> Win7
> > NTVDM issues. It has to do with CPU ability to run 16-bit code (seems
> still
> > present) and BIOS (expecially INT $10 VGA and INT $13 hard disk
> support).
>
> Not wrong if what you want to do is run the 16 bit app in a 64 bit
> flavor of Windows. The issue isn't whether the CPU will run the code (and
> 64 bit Intel architecture CPUs should still be able to do it). It's
> whether the host OS (Win7 in this case) supports it. The answer is "Not
> unless you use a virtual machine."

Afaik it is not just OS. If you switch a x86 CPU to 64-bit mode, then you can't run 16-bit code natively. (because then the "alternate" mode is already pinned to 32-bit)

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Complete thread:

Considering MS-DOS - paulrichards, 30.07.2011, 04:29 (Users)
- Considering MS-DOS - Japheth, 30.07.2011, 07:37
  - Considering MS-DOS - paulrichards, 31.07.2011, 01:49
- Considering MS-DOS - Rugxulo, 30.07.2011, 13:52
  - Considering MS-DOS - paulrichards, 31.07.2011, 01:54
- Considering DOS - DOS386, 30.07.2011, 15:17
  - Considering DOS - paulrichards, 31.07.2011, 01:56
- Considering MS-DOS - Dennis, 30.07.2011, 20:43
  - Considering MS-DOS - rr, 30.07.2011, 21:57
    - Considering MS-DOS - Dennis, 30.07.2011, 22:39
  - Considering MS-DOS - rr, 30.07.2011, 22:13
    - Considering MS-DOS - Dennis, 30.07.2011, 22:31
  - Considering MS-DOS - paulrichards, 31.07.2011, 02:06
    - Considering MS-DOS - Dennis, 31.07.2011, 02:28
      - Considering MS-DOS - paulrichards, 31.07.2011, 03:22
        Considering MS-DOS - Rugxulo, 31.07.2011, 03:50
        Considering MS-DOS - paulrichards, 31.07.2011, 04:34
        Considering MS-DOS - Dennis, 31.07.2011, 03:53
        Considering MS-DOS - paulrichards, 31.07.2011, 04:37
        Considering MS-DOS - ron, 31.07.2011, 06:57
        Considering MS-DOS - paulrichards, 31.07.2011, 07:19
        Considering MS-DOS - ron, 31.07.2011, 08:02
        Considering MS-DOS - paulrichards, 31.07.2011, 10:40
        Considering MS-DOS - Dennis, 31.07.2011, 17:05
        Considering MS-DOS - paulrichards, 01.08.2011, 01:39
        Considering MS-DOS - ron, 31.07.2011, 23:59
        Considering MS-DOS - paulrichards, 01.08.2011, 01:41
        Considering MS-DOS - marcov, 01.08.2011, 14:49
        Considering MS-DOS - Dennis, 02.08.2011, 16:01
        Considering MS-DOS - Dennis, 31.07.2011, 17:18
        Considering MS-DOS - w3a537, 02.08.2011, 10:25
  - Considering MS-DOG (inside NTVDM) - DOS386, 02.08.2011, 15:25
    - Considering MS-DOG (inside NTVDM) - Dennis, 02.08.2011, 15:48
      - Considering MS-DOG (inside NTVDM) - marcov, 02.08.2011, 18:56
        Considering MS-DOG (inside NTVDM) - RayeR, 02.08.2011, 19:58
        Considering MS-DOG (inside NTVDM) - Rugxulo, 05.08.2011, 23:06
        Considering MS-DOG (inside NTVDM) - RayeR, 12.08.2011, 03:09
        Considering MS-DOG (inside NTVDM) - DOS386, 04.08.2011, 11:29
        Considering MS-DOG (inside NTVDM) - marcov, 04.08.2011, 21:59
        Considering MS-DOG (inside NTVDM) - Dennis, 06.08.2011, 04:01
  - Considering MS-DOS - RayeR, 03.08.2011, 00:53
    - Considering MS-DOS - Dennis, 03.08.2011, 02:02
      - Considering MS-DOS - RayeR, 03.08.2011, 12:13
        Considering MS-DOS - Dennis, 03.08.2011, 15:34
        Considering MS-DOS - RayeR, 03.08.2011, 18:38
        Considering MS-DOS - Dennis, 03.08.2011, 19:19
        Considering MS-DOS - RayeR, 04.08.2011, 01:24
        Considering MS-DOS - Dennis, 04.08.2011, 04:29
        Considering MS-DOS - marcov, 04.08.2011, 08:53
        Considering MS-DOS - Rugxulo, 05.08.2011, 23:15
        Considering MS-DOS - Dennis, 06.08.2011, 03:05
        Considering MS-DOS - Rugxulo, 06.08.2011, 04:43
        Considering MS-DOS - marcov, 06.08.2011, 13:12
        Considering MS-DOS - marcov, 06.08.2011, 13:04
        Considering MS-DOS - Dennis, 04.08.2011, 04:38