Electronic Specifications; Memory Map - Gateway 960 User Manual

Electronic specifications

Memory map

Address Range (hex)
0 to 07FFFFh
0A0000h to 0BFFFFh
0C0000h and 0DFFFFh
0E0000h to 0FFFFFh
0E0000h to 0EFFFFh
FC000000h to FFFFFFFFh
Interrupts
The following table reflects a typical configuration, but you can change these
interrupts. Use this information to determine how to program each interrupt.
The actual interrupt map is defined using configuration registers in the I/O
controller. I/O Redirection Registers in the I/O APIC are provided for each
interrupt signal. The signals define hardware interrupt signal characteristics
for APIC messages sent to local APIC(s).
Important
Interrupt (IRQ)
0
1
2
3
Amount
640 KB
128 KB
128 KB
128 KB
2 MB
64 MB
If you disable an IDE controller to free the interrupt for that
controller, you must physically unplug the IDE cable from
the system board. Simply disabling the drive by configuring
the SSU option does not make the interrupt available.
Description
8254 timer
Keyboard controller
Cascade
Serial port
www.gateway.com
Function
DOS region, base system memory
Video or SMM memory
Expansion card BIOS and buffer
area
System BIOS
Extended system BIOS
PCI memory space
125