3-4
Computer Group Literature Center Web Site
Functional Description
3
You can program the watchdog timer via registers in the ISA I/O memory
map. The watchdog timer is protected from being accidentally enabled and
can support a range of count down time-outs up to eight minutes.
Memory Address Mapping
Refer to
for memory address information.
Table 3-1. Memory Addresses and Descriptions
Address
Size
Description
0xFFF80000 - 0xFFFFFFFF
512KB
High BIOS Area
0xFEE01000 - 0xFFF7FFFF
17.5MB
Available for PCI
0xFEE00000 - 0xFEE00FFF
4KB
Local APIC Configuration Space
0xFEC10000 - 0xFEDFFFF
1.94MB
Available for PCI
0xFEC00000 - 0xFEC0FFFF
64KB
I/O APIC Configuration Space
0x00100000 - 0xFEDFFFFF
3.98GB
Available for PCI when not used
for system memory
0x000F0000 - 0x000FFFFF
64K
System BIOS Area
0x000E0000 - 0x000EFFFF
64KB
Extended BIOS Area
0x000C0000 - 0x000DFFFF
128KB
Expansion ROM Area
0x000A0000 - 0x000BFFFF
128KB
Video Buffer Area
0x00000000 - 0x0009FFFF
640KB
DOS Applications/Compatibility
Region
Solution Systems Technologies Inc.
720-565-5995 | info@solusys.com | www.solusys.com
Solution Systems Technologies Inc.
720-565-5995 | info@solusys.com | www.solusys.com