Specifications

5-32 Chapter 5: Setup
Memory Map (7401-21xx/31xx BIOS Version 1.5.0.4 -
Discontinued)
Thefollowingtabledetailsthememorymapforthe7401‐21xx/21xx
terminalsBIOSVersion1.5.0.4(Pentiumprocessor).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UMB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
EC000‐ECFFF 4kB OEM(availableasUMB)
E0000‐EBFFF 48kB
BIOSReserved(currentlyavailable
D0000‐DFFFF 64kB AvailableHIDOSmemory
CE000‐CFFFF 8kB FlashDisk(optional)
CC000‐CDFFF 8kB NCRTrigantorMSR(optional)
C8000‐CBFFF 16kB AvailableHIDOSmemory
A0000‐C7FFF 160kB VideomemoryandBIOS
9FC00‐9FFFF 1kB
ExtendedBIOSData(moveableby
80000‐9FBFF 127kB Extendedconventional
00000‐7FFFF 512kB Conventional
