5-16 Chapter 5: Setup
Memory Map (7401-22xx/35xx/45xx BIOS Version 2.2.1.x)The following table details the memory map for 7401-22xx/35xx/45xx
terminals BIOS Version 2.2.1.x (Pentium III/Celeron pro cess ors ). The
ESCD area from ED000-EDFFF is not available for use as an Upper
Memory Block (UMB) by memory managers. The area from E0000-
EBFFF is currently not used by the BIOS and is available for use as UM B
by memory managers. Parts of this area may be used by future versions
of the BIOS to add increased functionality.
Address Range (hex) Size Description
FECFF000-FECFF01B 27 LAN PXE ROM
100000-10000000 255 MB Extended memory
F0000-FFFFF 64 kB System BIOS
EE000-EFFFF 8 kB Main BIOS (available as UMB)
ED000-EDFFF 4 kB ESCD (plug and play configuration
area)
EC000-ECFFF 4 kB OEM (available as UMB)
E0000-EBFFF 48 kB BIOS Reserved (currently available
as UMB)
D0000-DFFFF 64 kB Available HI DOS memory
CE000-CFFFF 8 kB Flash Disk (optional)
CC000-CDFFF 8 kB NCR Trigantor MSR (optional)
C0000-CBFFF 48 kB Onboard video BIOS
A0000-BFFFF 128 kB Reserved for video memory
9FC00-9FFFF 1 kB Ex tended BIOS Data (moveable by
QEMM, 386MAX)
80000-9FBFF 127 kB Extended conventional
00000-7FFFF 512 kB Conventional