DOS ain't dead

DR-DOS EMM386 vs. JEMMEX (DOSX)

posted by Rugxulo , Usono, 27.11.2007, 07:39

> Rugxulo, you're a genius!

I think it'll be hard to find supporters for that idea.

> EMM386's DPMI server is pants, so should always be switched off:
>
> CONFIG.SYS
> ...
> C:\DRDOS\EMM386.EXE DPMI=OFF ...etc

IIRC, you can't enable their DPMI via cmdline if you do that. Hence (until switching to JEMMEX full-time) I usually just ran "dpmi off" in AUTOEXEC.BAT so that I could adjust as needed. Some programs won't work w/ "DPMI off", though (you may have issues w/ NWCACHE or DELWATCH or STACKER or whatever). In fact, dare I say it, but DR-DOS' EMM386.EXE is buggy. Still, you do need it (but rarely these days, thanks to Tom/Devore/Japheth's FreeDOS work).

If you don't believe me, these programs seem to have issues w/ DR-DOS' EMM386:

* TDEP (needs "DPMI on" else keys won't work correctly)
* Mpxplay (hangs w/ EMM386 loaded and DPMI disabled)
* 7ZA + HXRT (can't remember, maybe PIC=ON works, maybe not)
* e3 / Win9x + HXRT -- (pretty sure this needs PIC=ON)
* CC386 (crashes/reboots when NWCACHE loaded and enabled only w/ EMM386 and built-in DPMI ?)
* SEE ("OUT OF MEMORY" but works fine under JEMMEX)

N.B. Like I said before, it's hard to test a billion different setups (EMM386 NOEMS, DPMI=OFF, etc.) even if my CONFIG.SYS has a few. So, take this info with a grain of salt. So, if it works for you, fine. But some setups of mine apparently have issues.

Complete thread:

• HDPMI16 - reprogrammed PIC - jaybur, 23.11.2007, 17:39
  • HDPMI16 - reprogrammed PIC - Japheth, 23.11.2007, 19:15
    • HDPMI16 - reprogrammed PIC - jaybur, 23.11.2007, 19:36
      • HDPMI16 - reprogrammed PIC - Japheth, 24.11.2007, 10:34
        • HDPMI16 - reprogrammed PIC - RayeR, 24.11.2007, 14:55
          • HDPMI16 - reprogrammed PIC - Japheth, 25.11.2007, 09:50
        • HDPMI16 - reprogrammed PIC - jaybur, 24.11.2007, 18:29
          • HDPMI16 - reprogrammed PIC - rr, 24.11.2007, 19:41
            • HDPMI16 - reprogrammed PIC - jaybur, 24.11.2007, 21:38
              • HDPMI16 - reprogrammed PIC - rr, 24.11.2007, 22:08
                • HDPMI16 - reprogrammed PIC - jaybur, 25.11.2007, 00:17
              • HDPMI16 - reprogrammed PIC - Rugxulo, 26.11.2007, 19:46
                • HDPMI16 - reprogrammed PIC - jaybur, 27.11.2007, 01:06
                • Bugzilla - lucho, 27.11.2007, 07:27
                  • Bugzilla - Rugxulo, 27.11.2007, 07:43
                    • No FreeDOS kernel developers left - lucho, 27.11.2007, 07:51
              • FreeDOS kernel (TODO before 2038 is released) - Rugxulo, 26.11.2007, 19:54
                • FreeDOS kernel (TODO before 2038 is released) - jaybur, 27.11.2007, 01:07
                  • FreeDOS kernel - lucho, 27.11.2007, 07:38
          • EDR-DOS, MS-DOS, FreeDOS, PC-DOS, PTS-DOS, ROM-DOS - lucho, 24.11.2007, 19:47
            • EDR-DOS, MS-DOS, FreeDOS, PC-DOS, PTS-DOS, ROM-DOS - jaybur, 24.11.2007, 21:08
              • Discussion of EDR-DOS issues - Japheth, 25.11.2007, 08:46
                • Discussion of EDR-DOS issues - lucho, 25.11.2007, 20:09
                  • Discussion of EDR-DOS issues - Japheth, 26.11.2007, 01:48
              • ROM-DOS - lucho, 25.11.2007, 19:58
            • EDR-DOS, MS-DOS, FreeDOS, PC-DOS, PTS-DOS, ROM-DOS - rr, 24.11.2007, 21:54
              • EDR-DOS, MS-DOS, FreeDOS, PC-DOS, PTS-DOS, ROM-DOS - lucho, 25.11.2007, 20:03
            • EDR-DOS, MS-DOS, FreeDOS, PC-DOS, PTS-DOS, ROM-DOS - Steve, 25.11.2007, 07:43
              • PTS-DOS, ROM-DOS - lucho, 25.11.2007, 19:53
                • PTS-DOS, ROM-DOS - flox, 25.11.2007, 21:41
                  • PTS-DOS, ROM-DOS - flox, 26.11.2007, 09:46
                  • PTS-DOS - lucho, 26.11.2007, 11:41
                    • PTS-DOS - flox, 26.11.2007, 12:04
                      • PTS-DOS - lucho, 26.11.2007, 13:08
                        • PTS-DOS - Steve, 26.11.2007, 13:16
                          • PTS-DOS - lucho, 26.11.2007, 13:37
                    • PTS-DOS - Rugxulo, 26.11.2007, 20:34
                • PTS-DOS - Steve, 26.11.2007, 13:11
  • HDPMI16 - reprogrammed PIC - Rugxulo, 26.11.2007, 19:49
    • HDPMI16 - reprogrammed PIC - jaybur, 27.11.2007, 01:46
      • DR-DOS EMM386 vs. JEMMEX - Rugxulo, 27.11.2007, 07:39
        • DR-DOS EMM386 vs. JEMMEX - jaybur, 27.11.2007, 16:07
    • PIC - lucho, 27.11.2007, 07:48
      • PIC - jaybur, 27.11.2007, 15:53
        • PIC - lucho, 27.11.2007, 20:14
          • PIC - jaybur, 27.11.2007, 23:24