3-6 Understanding System Features
Interrupt Level Assignments
INTERRUPT PRIORITY INTERRUPT DEVICE
IRQ08
Real-time clock
IRQ09
User-available
IRQ10*
USB (SCSI board for SCSI configurations)
IRQ11*
Video Board
IRQ12
On-board mouse port (available if no PS/2
mouse)
IRQ13
Reserved, Math Coprocessor
IRQ14
Primary IDE
IRQ15
Secondary IDE if present, or else user-available
*These interrupts are selected and used by the installed expansion boards.
PCI Local Bus
The 32-bit industry-standard PCI bus is a highly integrated
input/output (I/O) interface that offers the highest
performance local bus available for the Pentium II-based
processor. The PCI bus supports burst modes that send
large chunks of data across the bus, allowing fast displays
of high-resolution images.
The high-bandwidth PCI local bus eliminates data
bottlenecks found in traditional systems, maintains
maximum performance at high clock speeds, and provides a
clear upgrade path to future technologies.
The PCI bus contains the embedded PCI local bus IDE
interface and supports the video controller.
Flash ROM
The Flash ROM allows fast, economical BIOS upgrades.
Flash ROMs are reprogrammable system and video
EPROMs.
Summary of Contents for POWERMATE PROFESSIONAL PII
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