DOS ain't dead - big problem ??? RAM / 64-bit / etc.

big problem ??? RAM / 64-bit / etc. (Announce)

posted by marcov, 06.04.2009, 10:04

> IIRC DOS does work on xxx86-64 :clap:

How so? Once booted into 64-bit mode, afaik real mode is out of the question, since prefix 66 and 67 then refer to 32-bit mode instead of 16.

If you mean on a x86_64 capable machine, except for the very rare EFI ones (that have no BIOS), it will probably work (and I in fact I booted freedos based motherboard CDs under them).

Of course it is yet a newer generation, and probably some backwards compat was killed.

> ... or oven better, don't throw away your "old" Pentium4-xxx32 :-P

I never had one.

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Complete thread:

CHM reader in DOS - Laaca, 21.03.2009, 08:57 (Announce)
- CHM reader in DOS - DOS386, 22.03.2009, 05:42
  - CHM reader in DOS - marcov, 23.03.2009, 17:22
    - CHM reader in DOS - DOS386, 31.03.2009, 03:47
- CHM reader in DOS - marcov, 23.03.2009, 17:21
  - CHM reader in DOS - Laaca, 23.03.2009, 18:43
    - CHM reader in DOS - marcov, 23.03.2009, 21:30
      - CHM reader in DOS - marcov, 26.03.2009, 17:51
        CHM reader in DOS - Rugxulo, 01.04.2009, 13:27
        CHM reader in DOS - marcov, 01.04.2009, 23:39
        CHM reader in DOS - Rugxulo, 02.04.2009, 00:16
        CHM reader in DOS - marcov, 02.04.2009, 10:35
        big RAM / 64-bit / etc. - Rugxulo, 02.04.2009, 21:19
        big RAM / 64-bit / etc. - marcov, 04.04.2009, 15:13
        big RAM / 64-bit / etc. - Rugxulo, 04.04.2009, 17:21
        big problem ??? RAM / 64-bit / etc. - DOS386, 05.04.2009, 04:27
        big problem ??? RAM / 64-bit / etc. - marcov, 06.04.2009, 10:04
        big problem ??? RAM / 64-bit / etc. - DOS386, 07.04.2009, 04:32
        big problem ??? RAM / 64-bit / etc. - marcov, 07.04.2009, 13:24
        big problem ??? RAM / 64-bit / etc. - Rugxulo, 07.04.2009, 13:42
        big RAM / 64-bit / etc. - marcov, 06.04.2009, 09:53
        big RAM / 64-bit / etc. - Rugxulo, 07.04.2009, 00:43