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AST286.TEC
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ID:A2 Setup for AST Premium 286
DESQview 2.+ Technical Note
First, let me say that this technical note does not eliminate the
need on your part to read Appendix B in the DESQview manual
concerning the setup of DESQview on machines with exPANDed and
exTENDed memory. This appendix is quite good at explaining the
fundamentals of setup on such machines. Appendix B is
recommended (read that required) reading.
This note is mainly to point out the differences in setup between
an IBM AT with an AST RAMpage, as documented in Appendix B and
the AST machine.
The first important difference is that all of the memory supplied
on the FASTRAM cards, including the memory that is normally
allocated to motherboard or base RAM, is EEMS capable.
Therefore, IT IS NOT NECESSARY TO DISABLE ANY BASE MEMORY when
using the FASTRAM cards. Normally, out of the box, these
machines come with 1 meg of memory. 640K is base memory and the
rest is configured as expanded memory with the use of the
REMM.SYS driver. So in the default configuration in the
parlance of Appendix B, it is setup as though you had a 1 meg
RAMpage board backfilling to 0K.
The one change that you may want to make to the FASTRAM board
switches would involve enabling the DESQview QEXT.SYS file so
that it might use 64K of exTENDed memory. Again, read Appendix B
concerning the use of extended memory and the QEXT.SYS file. As
mentioned, the machine comes configured to have 640K of base and
384 of exPANDed memory. Assuming that you only want enough
exTENDed memory to support QEXT.SYS, you would want to set up
your machine to have 640K of base, 128K of exTENDed and the rest
expanded memory. To do this, you must change the switches that
are on the FASTRAM card that set the Linear Memory Size from 640K
(the default) to 768K. These settings are listed on page B-5 of
the AST User's Reference and will not be duplicated here.
Once you have set the switches to 768K, ignore the Setup error
that occurs on reboot, and run the AST SETUP program and
configure the machine so that it shows 640K base, 128K of
extended and the rest expanded. Load the QEXT.SYS and REMM.SYS
drivers in your CONFIG.SYS file and you should be ready to load
DESQview using the XDV.COM file (again, read Appendix B
concerning this file.).
Copyright (C) 1990 by Quarterdeck Office Systems
* * * E N D O F F I L E * * *