🚀 go-pugleaf

Does anyone know of an ftp'able source for documentation for the
MTMCDSA.SYS and MSCDEX.COM CDROM drivers?  

AND/OR

Does anyone know why EMM386 and MTMCDSA.SYS conflict with each other in
a DTK 386/sx with a PPM2531D(s) motherboard and DTK BIOS?


One of my users has a DAK CD-Rom using these drivers.  She had it
running fine in an older, slower DTK386sx.  She recently upgraded to
this new one with a different mother board, and is experiencing all
sorts of new problems.

The CPU BIOS arrived mis-configured to begin with, but fixing that has
not solved the original problem, which is that the machine is very
flakey and crashes during operation for no reason.  It often complains
about parity errors.

Of course, both DAK and DTK point at each other as the culprit so I'm
not getting much help there.

I've narrowed the problem down to the fact that as soon as I load the
MTMCDSA.SYS driver in combination with EMM386, the machine gets flakey.
It totally fails  CHECKIT's memory diagnostic with both loaded, but
passes perfectly as soon as I remove one or the other.  I've
experimented with every BIOS and EMM386 and HIMEM setting I can, and
nothing makes any difference.  Neither does running in non-TURBO mode.

From dumping the MTMCSDA.SYS code with a lister, I know that it will use
EMS memory (from the error messages it contains) but I do not know how.
DAK did not document ANY of the drivers in their manual and I'm
suspecting that there is a conflict between EMM386 & the drivers that
appears to cause a problem on this faster motherboard.  However, I can't
find anything so radically different between this new cpu and the
original one that would explain this problem.

If you have *any* thoughts or suggestions I'd appreciate hearing from
you.

Thanks!



-- 
Joi Ellis                      msjle@uxa.ecn.bgu.edu
Student Residential Programs   Western Illinois University