3-6 Reviewing System Features
Interrupt Level Assignments
INTERRUPT PRIORITY
INTERRUPT DEVICE
IRQ13
Coprocessor
IRQ14
Primary IDE
IRQ15
Available
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-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.
With a Flash ROM, a ROM BIOS change:
is fast and easily done using a Flash utility
eliminates the expensive replacement of ROM BIOS
chips, and reduces system maintenance costs
reduces inadvertent system board damage that can take
place when replacing ROMs