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Utility Descriptions 5-25
DEVICE = EMM386.EXE ROM=F000-FFFF
Specifies an address range for EMM386 to use for shadow RAM. The
ROM represented by the address range is copied into RAM. The RAM
area is remapped into the ROM address space and write protected. In
this example, the BIOS that normally occupies the 64KB block at F000:0h
is copied into RAM and run from there. This may speed up your system if
it does not already make use of shadow RAM.
DEVICE = EMM386.EXE D=20
Sets aside 20KB of memory for Direct Memory Access (DMA). Another
client, such as a network TSR, can then utilize this memory buffer for disk
I/O.