Technical Advisory Note 004 28 July 1989
One megabyte 386 sytems 

One of the unique features of Vmos/3 is that it will effectively multitask on 
1 megabyte systems.  Use of the 386 demand and virtual paging features makes 
this possible.  However, Vmos/3 does need 1 megabyte.

Some systems, including motherboards based on the Chips and Technologies 
chipset, do not release the RAM assigned to shadowing the system BIOS and 
video ROMs, EVEN WHEN SHADOWING IS DISABLED. 

This results in system memory no better than 896 kilobytes, slightly less than 
we must have for minimum function.  We believe that with some additional work 
on our part we can accomodate the 896k systems, but have not set a date for 
completion of this project.

The short term solution is to add additional RAM to your system.  As a 
fortunate side effect, this will result in improved performance over that 
possible on a 1 megabyte system.  

We suggest you contact your machine supplier.  Contacting your system 
manufacturer direct may also be useful.  You thought you purchased a 1 
megabyte system and, in effect, it isn't.  They may or may not be willing to 
make it financally easier to add more memory, but your comments are important 
and they may effect their future choices of motherboard manufacturers or 
architectures.