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I have more to report on this problem.
I am using current stable:
kernel - 1.1.35 Build 2035b-cvs,
2006-05-21
freecom - 0.84-pre XMS_Swap,
2006-05-21
himem + emm386 -
from emmx208 or emm208x ZIP archive
I might have added to the original post by
saying that this problem does not occur on an older 486 SX2-50 (no math
coprocessor) in an ISA-only motherboard. Only on this newer Pentium 100
with PCI + ISA.
I could also have added that all my DOS games
(Doom, Quake, Duke, Spacequest, Beneath A Steel Sky) run fine on this computer
and configuration.
On the chance that there was a physical memory
problem I dropped from 16 to 8 MB (no difference), and then also swapped in the
extra 8 MB (no difference).
One thing I noticed in further testing was that
Draw, Paint and Doodle have the most problems. All freehand
programs. And if they load successfully, then they work until you try to
close them. Artline is rather stable by comparison, though it does not
seem to offer a freehand tool, at least that I could find quickly.
If I drop all the way to no HIMEM and no EMM386,
there is insufficient memory to run Artline or Paint. Draw, Write, Tetris,
Scgem, and Fanwor all seemed to work. But Doodle locks the machine when it
closes.
If I add back HIMEM but not EMM386, Doodle causes a
reboot while it is loading. And Write and Draw lock up the machine while
loading.
If I add back HIMEM and EMM386, Doodle, Draw and
Paint all lock up the machine while closing.
I saw a thread (March?) in the OpenGEM-dev list
that for the OpenGEM/XM project, there was a user who, when he was running more
than one GEM app with graphics under FreeDOS, there was some kind of
interference. The opinion there was that the problem was traceable to
the FreeDOS kernel, because the problem did not occur with a couple of other DOS
kernels. This sort of behavior seemed related to what I am experiencing on
this computer.
--John Hupp
P.S. my test config & autoexec, further
simplified from the originally reported configurations - more mod
reports above:
LASTDRIVE=Z
BUFFERS=30 FILES=40 DOS=HIGH,UMB DEVICE=C:\FDOS\BIN\HIMEM.EXE DEVICE=C:\FDOS\BIN\EMM386.EXE NOEMS X=TEST VDS SHELL=C:\command.com C:\ /E:512 /P=C:\AUTOEXEC.BAT ------------------------------------------------------------------------------------------
SET PROMPT=$P$G
SET DOSDIR=C:\FDOS SET PATH=C:\NET;C:\;C:\FDOS\bin;C:\DOSSHELL;C:\PKZIP SET TEMP=C:\FDOS\TEMP SET TMP=C:\FDOS\TEMP CTMOUSE
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