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4-26 System Board
The Flash ROM allows the system and video BIOS to be upgraded with the
BIOS Update utility, without having to physically remove the ROM (see
Section 2 for further information on the BIOS Update utility). The Flash ROM
supports the reprogramming of the system BIOS and the video BIOS.
System Memory
The system comes with between 64 MB and 1 GB of SDRAM installed in
DIMM sockets on the system board.
The memory configuration consists of four sockets. The DIMM sockets accept
168-pin, 72-bit (ECC) 32-, 64-, 128-, and 256-MB DIMMs. See “DIMM
Sockets” for a list of supported DIMMs.
BMC
One major function of the BMC is to autonomously monitor system
management events, and log their occurrence in the non-volatile System Event
Log (SEL). These include events such as over-temperature and over-voltage
conditions, fan failure, or chassis intrusion. To enable accurate monitoring, the
BMC maintains the non-volatile Sensor Data Record (SDR), from which sensor
information can be retrieved. The BMC provides an ISA host interface to SDR
sensor information, so software running on the server can poll and retrieve the
server’s current status.
ISA Bus
The system board uses the ISA bus for transferring data between the processor
and some I/O peripherals and expansion boards. The ISA bus supports 16-bit
data transfers and typically operates at 8 MHz.
PCI Local Bus
The 32-bit PCI local bus is the primary I/O bus for the system. The PCI bus is a
highly integrated I/O interface that offers the highest performance local bus
available for the Pentium processor. The bus supports burst modes that send
large amounts of data across the bus, allowing fast displays of high-resolution
images.
The PCI local bus is a high-performance bus that provides a processor-
independent data path between the CPU and high-speed peripherals. The PCI
bus is a robust interconnect mechanism designed specifically to accommodate
multiple high performance peripherals for graphics, full motion video, SCSI,
and LAN.
The PCI local bus supports memory transfer rates of over 100 MB per second
for reads and over 120 MB per second for writes, depending on processor
configuration.
Summary of Contents for POWERMATE PROFESSIONAL 9000E - SERVICE
Page 14: ...1 System Overview Configurations Features Components ...
Page 92: ...4 System Board Sockets and Connectors Jumpers Components Resources ...
Page 120: ...5 Expansion Boards Sound Board Graphics Board Network Board ...
Page 132: ...7 Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning ...
Page 136: ...8 Troubleshooting Checklist Diagnostics ...
Page 176: ...A Release Notes General Notes Windows NT Issues ...