Intel Embedded Intel486 Hardware Reference Manual page 248

EMBEDDED Intel486™ PROCESSOR HARDWARE REFERENCE MANUAL
This example PCI chipset supports all Intel486 processors and upgrades, including write-back in-
ternal (L1) cache and Intel SMM power management. PCI local bus IDE is incorporated for high-
er performance IDE. A block diagram of a system that uses this type of PCI chip set is shown in
Figure 8-5.
ISA Bridge
ISA Bus
82091AA
AIP
8-20
Intel486™ Processor
Family and Upgrades
HA[17:2]
System
Controller/
ISA Bridge
Interface
System Controller
Power Management
Interrupt
DMA
Timer
5 Slots
X-Bus
KBC BIOS RTC
Figure 8-5. Example System Block Diagram
Host Bus
L2
Cache
Optional
244(3)
PCI Bus
PCI
Graphics
Device
IDE
Interface
Data
Optional
245(5)
Main Memory