Gateway E-9525R Manual Do Utilizador
APPENDIX A: Server Specifications
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96
Electronic specifications
Memory map
Interrupts
Important
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
system board. Simply disabling the drive
by configuring the BIOS option does not
make the interrupt available.
The following table reflects a typical configuration, but you can change these
interrupts. Use this information to determine how to program each interrupt.
interrupts. Use this information to determine how to program each interrupt.
Address Range (hex)
Amount
Function
0 to 07FFFFh
640 KB
DOS region, base system memory
0A0000h to 0BFFFFh
128 KB
Video or SMM memory
0C0000h and 0DFFFFh
128 KB
Expansion card BIOS and buffer area
0E0000h to 0FFFFFh
128 KB
System BIOS
0E0000h to 0EFFFFh
2 MB
Extended system BIOS
FC000000h to FFFFFFFFh
64 MB
PCI memory space
ISA Interrupt
Description
IRQ0
8254 timer
IRQ1
Keyboard controller
IRQ2
Cascade for IRQ9
IRQ3
Free
IRQ4
Serial port
IRQ5
Hot-plug SCSI controller
IRQ6
Diskette controller
IRQ7
Free
IRQ8
Real-time clock
IRQ9
Generic, Option for SCI
IRQ10
VGA
IRQ11
USB
IRQ12
Mouse controller
IRQ13
Numeric data processor
IRQ14
Primary IDE controller
IRQ15
Secondary IDE controller