IBM F80 System Architecture and Technical Overview, CPU Architecture, RS64 III Risc Processor

System Architecture and Technical Overview

Figure 5 shows the system schematic of the Model F80. In this section the different physical components in the schematic and the SMP processor configurations are discussed.

PCI

64-Bit

Bus 7,8

Bus 7,8

64-Bit

PCI

64-Bit

64-Bit

PCI

64-Bit

Bus 5,6

PCI

PCI 1

PCI 2

PCI

Bus 5,6

64-Bit

PCI

Bridge

Bridge

Bus 3,4

Bus 3,4

PCI

64-Bit

64-Bit

5V

PCI

SCSI

64-Bit

Bus 1,2

Bus 1,2

64-Bit

5V

PCI

Bus 7,8

64-Bit

5V

PCI

CSP

Bus 5,6

Connectors

DRAM

Flash

64-Bit

5V

PCI

UPS

CPM

PCI

Bus 3,4

64-Bit

PCI

Controller

Bridge

Native

Bus 2

ISA Bridge

32-Bit Not Connected

I/O

Connectors

Bus 1

Super I/O

403

32-Bit

Ethernet

DUART

I/O

Controller

Memory Card 1

RIO

RIO

Port 0

Port 1

SMI

SMI

SMI

SMI

SMI

Bus 0,1,2,3

4 MB Cache

6XX

Proc.

Memory

Bus 0

2 Way

Controller

Memory Card 2

Proc.

SMI

6XX

4 MB Cache

Bus 1

SMI

SMI

SMI

SMI

Bus 4,5,6,7

2-Way

Mother Board

4 MB Cache

4 MB Cache

OR

4 MB Cache

Proc.

Proc.

Proc.

2 Way

2 Way

2 Way

Proc.

Proc.

Proc.

4 MB Cache

4 MB Cache

4 MB Cache

4-Way Processor Card

2-Way Processor Card

Figure 5.

RS/6000 Model F80 System Schematic for 2-, 4-, or 6-Way SMP

CPU Architecture

The key components in the CPU include the processor, the processor packaging, memory controller, memory subsystem, and the I/O interface.

RS64 III RISC Processor

The RS64 III processor card used in the Model F80 has the following attributes:

• 450 MHz or 500 MHz operating frequency

6 RS/6000 7025 Model F80 Technical Overview