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System Board
The interconnect switch is implemented on the system board
by the chipset consisting of one C-chip, one P-chip, and two
D-chips. The chipset provides the data and address path
between the CPU, memory, and the I/O subsystem.
The CPU installed on the system board is the Alpha 21264A
(600 MHz). The four cache chips provide 2 Mbytes of second-
level cache. A flash ROM holds the SRM console code, the
AlphaBIOS console code, and the NVRAM data. The remote
management console (RMC) is implemented by the RMC
processor and is accessed through the COM1 port. Integrated
into the system board is the logic needed for all the ports
shown on the left side of the module, including the two
Ethernet ports, and also for the two IDE connectors.
Jumpers on the board allow you to change the action of the
Halt button and disable the RMC timer.
Connectors are on the system board for five other cards: the
PCI riser card and four memory DIMMs.
Component and Connector Locations
PK0331-99
RMC
Processor
COM1 and RMC
Keyboard, Mouse
Parallel Port
Ethernet
Ethernet
COM2
D
Chip
P
Chip
D
Chip
C
Chip
Memory
CPU
PCI Riser Card
IDE
Halt/Reset Jumper
RMC Jumper