NEC LC1400 manual Pentium II Processor, System Memory

Pentium II Processor

The system board includes a Pentium II processor that includes the processor core with an integrated 16 KB primary (L1) cache and a secondary (L2) cache. The processor implements the MMX™ technology and the processor’s numeric coprocessor significantly increases the speed of floating-point operations.

The processor external interface operates at a maximum of 100 MHz. The second-level cache is located on the substrate of the SEC cartridge. The cache includes burst pipelined synchronous static RAM (BSRAM). The L2 cache is offered with error correcting code (ECC) that operates at half the core clock rate.

System Memory

The system board contains three 168-pin DIMM sockets. Memory is partitioned as three banks of SDRAM DIMMs, each providing 72 bits of noninterleaved memory (64- bit main memory plus ECC). Your system may include from 32 MB to 768 MB of memory, using up to three DIMMs.

System memory begins at address 0 and is continuous (flat addressing) up to the maximum amount of DRAM installed (exception: system memory is noncontiguous in the ranges defined as memory holes using configuration registers). The system supports both base (conventional) and extended memory.

System Overview 1-9