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- Document 1608
- QEMM v.6
-
- Initials:
- MDC
- 11/2/91
- DRDOS 6.0
-
- Keywords:
- QEMM
- QEMM386.SYS
- HIDOS.SYS
- STEALTH
- XMS
- MEMORY
-
- Description:
- The third party compatability unit at Quarterdeck reports that DR DOS 6
- and QEMM386 v6 are compatible. OPTIMIZE does not recognize all of the
- CONFIG.SYS enhancements offered by DR DOS 6, such as SWITCH, but will
- work properly otherwise
-
- We have the most recent version of QEMM (v.6.01) , and it seems
- to be working very well on the new 386/33mhz. AMD 386/40mhz.
- Processor machines with AMI BIOS we have.
-
- There's been a lot of talk about their new and major feature STEALTH.
- The STEALTH technology actually relocates/re-maps ROM's off into
- extended memory, thus freeing up more contiguous upper memory for use
- by QEMM (as much as a 128k block on the AMD 386/33mhz. machine.)
- STEALTH has two specific modes of operation specified by using ST:F
- or ST:M on the QEMM device driver line. It is important to understand
- that an advanced feature like this is difficult to troubleshoot. The
- QEMM documentation (written, and on-line via the OPTIMIZE program) gives
- some very helpful "first-step" debugging hints.
-
- If you are using QEMM with DRDOS 6.0 and are seeing strange behavior,
- try removing the ST option on the QEMM device driver line
- altogether.
-
- STEALTH confuses many disk caches which use expanded memory (EMS)
- because STEALTH technology uses the LIM page frame in an advanced,
- non-standard way. To prevent data corruption advanced hard disk reads
- and writes (/H-) are automatically disabled by SuperPCK when STEALTH is
- used. Quarterdeck, Multisoft and Digital Research are working together
- on this problem.
-