You can
set the base segment to any hexadecimal value between 0x1000 and 0x4000. The default setting
is 0x4000.
RAM Specifies that the EMM should only use 64 KB of address space from the UMB area for the
EMM page. Normally, the EMM uses the entire UMB for the EMM page to improve EMM performance.
However, your application may require more conventional memory than this practice
allows. Using the RAM option reduces the EMM page size, which makes it easier for the command
environment to load more applications in upper memory??”freeing conventional memory
for application use.
108 CHAPTER 5 CREATING CMD AND BAT FILES
Setting the Number of Accessible Files
The Files setting may not seem very important, but every file handle you provide to the command
environment uses conventional memory. Remember that conventional memory is already quite
small and many older applications barely load in the space provided. The default Files=40 setting
usually provides a good compromise. This setting means that the command environment can open
40 files, which is more than sufficient for most older applications. You can increase the number to
as many as 255 when your application complains that it??™s out of file handles or decrease the number
to as little as 8 when the application complains about a lack of memory.
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