Date: Fri, 13 Feb 1998 17:01:42 +0100 From: Matthias Paul Subject: Re: 7.02 bugs and problems To: opendos AT delorie DOT com Reply-to: Matthias DOT Paul AT post DOT rwth-aachen DOT de Message-id: <16F26A24446@reze-1.rz.rwth-aachen.de> Organization: Rechenzentrum RWTH Aachen Precedence: bulk On 05 Feb 1998 Pavel Ozerski wrote: > 1. Something about bugs in the 7.02 final release... > HMA management. > My assumption about the bug seems to be true: Caldera used Novell's source > code without taking into account the bloating of the COMMAND.COM. > [...] Your observation concerning the "COMMAND.COM in HMA problem" is absolutely correct, but this temporary limitation has already been discussed in details in the past. The issue will most probably be gone in the next release. For DR-DOS 7.02 a solution is to use the new SHELLHIGH= directive instead of the traditional SHELL=. The difference between SHELL= and SHELLHIGH= is that the later accepts an additional SIZE= parameter (hex) for the amount of memory to be reserved for COMMAND.COM in the HMA. Note, that to load COMMAND.COM into the HMA you still have to provide the /MH option, SHELLHIGH= does NOT do this my itself e.g. replace SHELL=c:\opendos\command.com c:\opendos\ /MH /P by SHELLHIGH SIZE=xxxx c:\opendos\command.com c:\opendos\ /MH /P whereby SIZE= shall be something between 1000 and 2000 hex here (Sorry, I don't know the optimal value right now, so one should iterate this value to the lowest possible value). To high values will prohibit other parts of the system to be loaded in the HMA or at least causing unnecessary HMA fragmentation. If COMMAND.COM is not loaded into the HMA (e.g. when using 4DOS instead), it is a good idea to set SIZE=20 (the minimum). This will cause larger contineous chunks of HMA memory to be provided for usage by other HMA clients like for example ANSIPLUS. Matthias -------------------------------------------------------------------- Matthias Paul, Ubierstrasse 28, D-50321 Bruehl, GERMANY eMail: Web : http://www.rhrz.uni-bonn.de/~uzs180/mpdokeng.html -------------------------------------------------------------------- Caldera Digital Research Systems/OpenLinux: http://www.caldera.com/ --------------------------------------------------------------------