Logic Control And Addressing; Upper Memory Blocks - Motorola Mobile Workstation 520 Application Developer's Manual

Logic Control and Addressing

Upper Memory Blocks

This section includes maps of upper memory blocks, I/O addresses, and
interrupts.
Table 5
UMB Map
Address (hex)
A0000-BFFFF
C0000-CAFFF
CB000-CFFFF
D0000-D7FFF
D8000-DFFFF
E0000-FFFFF
EA000-EBFFF
EC000-EFFFF
F0000-FFFFF
Task
Video memory
VGA BIOS
PCM boot BIOS
PCMCIA services
PCMCIA services
SYSTEM BIOS areas
ESCD (PNP/DMI
configuration)
BIOS boot block
BIOS
PC Configuration
Comments
Used for power management
BIOS area in SMM mode
Part of system BIOS area
Part of system BIOS area
Part of system BIOS area
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