Specifications

Chapter 5: Setup 5-27
Memory Map (7401-26xx/46xx BIOS Version 2.3.x.x)
Thefollowingtabledetailsthememorymapfor7401‐26xx/46xx
terminalsBIOSVersion2.3.1.2(PentiumIII/Celeronprocessorswith
ACPI).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
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
ExtendedBIOSData(moveableby
QEMM,386MAX)
80000‐9FBFF 127kB Extendedconventional
00000‐7FFFF 512kB Conventional