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

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

posted by RayeR , CZ, 24.04.2008, 22:34

I remember that I saw some JMP trick in pmode switching routine written as an example in old Processors of intel book by Brandejs and it was described as a need to flush pipeline. But I cannot post it exactly I returned the book to my friend some months ago.
Anyway I have a 386SX notebook laying around so I can test himemx there. But what should I expect? I will hang or reboot or what if there will be a failure?

---
DOS gives me freedom to unlimited HW access.

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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