I/O Subsystem; Bios (Basic Input Output System) Flash Memory - Sun Microsystems Workstation W1100z White Paper

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Sun Microsystems, Inc.

Figure 3-7. Sample HyperTransport Technology architecture block diagram

I/O Subsystem

The I/O subsystem is connected to the CPU complex through a HyperTransport link from the boot

processor. The I/O subsystem consists of the following components:

• A tunneling HyperTransport bridge (AMD-8131 HyperTransport PCI-X Tunnel)

• A HyperTransport-attached AMD-8151 AGP 3.0 Tunneling bridge

• A HyperTransport-attached "SouthBridge" component (AMD-8111 HyperTransport I/O Hub)

• Flash memory for BIOS

• Additional peripheral I/O embedded on the planar consisting of:

• A dual channel SCSI controller (type Adaptec 7902W) attached to the PCI-X Bridge AMD-8131

• One 10/100/1000 (Gigabit) Ethernet MAC/PHY device (type Broadcom BCM5703)

• A video/graphics slot(type AGP 3.0 (AGP-8x)) attached to the AMD-8151 AGP Tunnel bridge

component

• AC'97 Audio

• USB 1.1 (upgraded to USB 2.0 on Sun Java Workstation W1100z and W2100z)

• I/O buses: PCI, LPC, SMbus, and APIC

The Sun Java Workstation W1100z and W2100z BIOS contains software that initially boots, initializes,

and configures the workstations. The BIOS will initialize components, detect CPUs, check and test

physical memory, configure onboard devices, configure PCI devices, and support and optimize any

other functionality on the motherboard before passing control to the boot device. The BIOS contains

Phoenix BIOS 4.0 Release 6.0 and the Server BIOS features that include:

• Quiet Boot

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W2100z