Texas Instruments 3000 - Manual (Page 69)

System Options, Page 1
Because the EMM.SYS device driver controls hardware registers to enhance computer
performance, other LIM 4.0 drivers should not be used on the computer unless they
comply with the specifications found in this chapter. The factory default is 32 KB.
Shadow ROM
This item selects whether or not to use shadow ROM in the computer. If set to YES (96
KB), the BIOS (basic input/output system) is loaded into faster Extended RAM memory
when the computer boots. The BIOS and your application programs then operate much
faster. Select the YES (96 KB) setting unless your application program needs the 96 KB
this feature uses. The factory default is YES.
Unused Memory
This item is informational, showing the amount of memory not currently allocated to the
other memory items. Unused memory should always equal 0 (zero). Use the guidelines
for allocating memory in the next section to make the Unused item equal 0.
Guidelines for Allocating Memory
Consider the following guidelines when allocating memory among the memory items.
1. Set Shadow ROM to Yes unless your application program needs the 96
KB that Shadow ROM uses.
2. Move the highlight to the memory item you want to reduce and select
the new value you want. Note that the difference is added to the Unused
item value.
3. Move the highlight to the memory item you want to increase and select
the new value you want. Note that the difference is subtracted from the
Unused item value.
4-8 Customizing Your Computer