DOS ain't dead - comment on flushing predecode queue (pre-Pentium)

comment on flushing predecode queue (pre-Pentium) (DOSX)

posted by Japheth , Germany (South), 23.04.2008, 19:54

> Hi Japheth ! Dunnow if this place is appropriate for discussing this, or
> even if you are interested in discussing, anyway... briefly reviewed your
> HIMEMX code and comments, and I think there's a point not absolutely
> correct here :

...

> Anyway, the good news is there is a 100% correct and documented fix : you
> must do a near jmp $+2 after the move to cr0. This flushes both the
> instruction prefetch and predecode queues.

This might be true, but I don't own a working 80386 system and cannot change working code just because theory suggests that it may have troubles on a 80386. I need facts. :-D (Just in case, your second name isn't Eric?)

---
MS-DOS forever!

Post reply

Complete thread:

comment on flushing predecode queue (pre-Pentium) - Ninho, 23.04.2008, 10:06 (DOSX)
- comment on flushing predecode queue (pre-Pentium) - Japheth, 23.04.2008, 19:54
  - comment on flushing predecode queue (pre-Pentium) - Ninho, 23.04.2008, 20:22
    - comment on flushing predecode queue (pre-Pentium) - Japheth, 23.04.2008, 21:04
      - comment on flushing predecode queue (pre-Pentium) - Ninho, 23.04.2008, 23:32
        comment on flushing predecode queue (pre-Pentium) - Rugxulo, 24.04.2008, 19:18
        comment on flushing predecode queue (pre-Pentium) - RayeR, 24.04.2008, 22:34
        comment on flushing predecode queue (pre-Pentium) - Ninho, 25.04.2008, 08:11
        comment on flushing predecode queue (pre-Pentium) - Japheth, 25.04.2008, 08:58
        comment on flushing predecode queue (pre-Pentium) - Ninho, 25.04.2008, 09:23
        comment on flushing predecode queue (pre-Pentium) - Japheth, 25.04.2008, 09:31
        comment on flushing predecode queue (pre-Pentium) - Ninho, 25.04.2008, 09:52
        comment on flushing predecode queue (pre-Pentium) - rr, 25.04.2008, 10:00
        comment on flushing predecode queue (pre-Pentium) - Ninho, 25.04.2008, 10:09
        comment on flushing predecode queue (pre-Pentium) - Steve, 25.04.2008, 11:05
        comment on flushing predecode queue (pre-Pentium) - Steve, 25.04.2008, 11:04
        comment on flushing predecode queue (pre-Pentium) - rr, 25.04.2008, 11:11
        comment on flushing predecode queue (pre-Pentium) - Japheth, 25.04.2008, 11:18
        comment on flushing predecode queue (pre-Pentium) - rr, 25.04.2008, 11:21
        comment on flushing predecode queue (pre-Pentium) - Japheth, 25.04.2008, 11:24
        comment on flushing predecode queue (pre-Pentium) - rr, 25.04.2008, 11:41
        comment on flushing predecode queue (pre-Pentium) - Japheth, 25.04.2008, 13:57
        comment on flushing predecode queue (pre-Pentium) - rr, 25.04.2008, 14:34
        comment on flushing predecode queue (pre-Pentium) - Ninho, 25.04.2008, 11:34
        comment on flushing predecode queue (pre-Pentium) - Steve, 25.04.2008, 11:55
        comment on flushing predecode queue (pre-Pentium) - Ninho, 25.04.2008, 13:09
        comment on flushing predecode queue (pre-Pentium) - Steve, 25.04.2008, 14:18
        comment on flushing predecode queue (pre-Pentium) - Rugxulo, 25.04.2008, 20:55
        comment on flushing predecode queue (pre-Pentium) - RayeR, 26.04.2008, 00:54
        comment on flushing predecode queue (pre-Pentium) - Japheth, 26.04.2008, 09:49
        comment on flushing predecode queue (pre-Pentium) - Ninho, 26.04.2008, 10:29
        comment on flushing predecode queue (pre-Pentium) - Rugxulo, 26.04.2008, 20:57
        comment on flushing predecode queue (pre-Pentium) - RayeR, 27.04.2008, 01:52
        comment on flushing predecode queue (pre-Pentium) - Rugxulo, 27.04.2008, 05:36
        comment on flushing predecode queue (pre-Pentium) - RayeR, 27.04.2008, 13:20
        comment on flushing predecode queue (pre-Pentium) - Rugxulo, 27.04.2008, 20:20
        comment on flushing predecode queue (pre-Pentium) - flox, 27.04.2008, 22:08
        comment on flushing predecode queue (pre-Pentium) - Steve, 28.04.2008, 02:44
        comment on flushing predecode queue (pre-Pentium) - marcov, 27.04.2008, 15:46
        comment on flushing predecode queue (pre-Pentium) - Ninho, 27.04.2008, 10:10
        comment on flushing predecode queue (pre-Pentium) - Japheth, 28.04.2008, 11:50
        comment on flushing predecode queue (pre-Pentium) - tom, 27.04.2008, 14:46
        HIMEMX bug - DOS386, 01.05.2008, 05:48
        HIMEMX bug - Japheth, 01.05.2008, 09:20