HP 520 5/XX, 525 5/XX manual 33

2 System Board - (SiS Chipset) (Part Number: D4051-63001)

SiS Chipset

Pentium Processor

Processor Local Bus (64 bit, 60/66 MHz)

Level-2	Host Bridge & Memory				Main	Data Path
Cache	Controller SiS 5511				Memory	SiS 5512
	CPU		PCI
	Interface		Interface
	Cache		SiS 5512	Control
	Control		Control		Video
					Controller
	Memory		UMA		SiS 6205
	Control	Arbitration

PCI Bus

(32 bit, 30/33 MHz)

		BIOS
		(Flash Memory
PCI/ISA Bridge
SiS 5513		28F020)
PCI Bus	ISA Bus
Interface
	Interface
IDE
Controller		Super I/O
		NS 87308 or
DMA	Interrupt		Little Ben
Controller	Controller	NS 87307

ISA Bus

(16 bit, 7.5/8.33 MHz)

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