Appendix A System Specifications - NEC DIRECTION L Service Manual

Appendix A
System Specifications
This section describes the system specifications.
Processor
Microprocessor 233-MHz, 266-MHz, 300-MHz, or 333-MHz Pentium II MMX
Clock Rate
T
200 MHz internally, 66 MHz externally
T
233 MHz internally, 66 MHz externally
T
300 MHz internally, 66 MHz externally
T
333 MHz internally, 66 MHz externally
Processor Support
T
32-bit addressing
T
64-bit data
Primary Cache 32 KB of internal write-back cache on processor
Secondary Cache
Processor Mounting
T
Processor subsystem is inserted into slot 1 on the system board.
T
A 242-pin edge connector is implemented on the processor card for system board
installation.
T
Each end of slot 1 has a Retention Mechanism Attach Mount (RMAM) inserted
through the board. RMAM is made of two studs connected with a bridge.
T
Retension Mechanism (RM) is inserted over slot 1 to act as an insertion guide and
prevent movement of processor after subsystem mounting.
T
RM is attached to RMAM by 4 captive nuts held to the guide with fasteners.
T
For thermal protection, a heatsink is supported by a Heat Sink Support (HSS),
which is attached to the system board by two push pins.
T
The heatsink is secured in place to the HSS by an HSS top bar.
512 KB of pipeline burst cache