Texas Instruments 3000 User Manual

Page 163

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Memory Device Drivers

Some application programs may require "backfill" memory, which is the unused area of
standard memory that can be used by EMM.SYS as Expanded memory. For example, an
application program may require only 256 KB or 512 KB of standard memory, leaving
384 KB and 128 KB of backfill. memory space, respectively, for use as Expanded
memory.

The Shadow ROM memory you can select at the Setup Program enables mapping the
BIOS and Video BIOS into high speed memory for faster operation. When not selected,
the shadow memory is available for use as Expanded or Extended memory. The shadow
memory area is limited to 96 KB.

Your TravelMate 3000 provides 2 MB of RAM (main memory) standard. Only the
standard 2 MB can be used as system base memory (640 KB) and shadow memory (96
KB), and cannot be increased by adding additional memory. However, up to 4 MB of
optional additional memory can be used as Extended and/or Expanded memory and can
be combined with any of the standard 2 MB of memory not used for base or shadow
memory.

EMM.SYS Parameters

Install EMM.SYS in the CONFIG.SYS file as the first device
driver. This permits other device drivers, such as

RAMDRIVE.SYS, to use the memory manager. The following
parameters are available for EMM.SYS.

DEVICE = C:\UTILS\EMM.SYS [/Alternates=nn]
[/Badremapped] [/BufferDMA=nnn] [/Contexts=nnn]
[/Depth=nn]
[/eXclude=xxxx-xxxx] [EMS] [/Frame=xxxx]
[/Fulldisplay] [/Hand1es=nnn]
[/incLude=xxxx-xxxx] [/Memory=nnnn]
[/ShowOptions] [/Start] [/Test] [/Zero]

F-8 Configuring Memory

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