System Specifications B-3
DIMM speed must match processor bus speed
Memory module type — gold-plated, non-parity, SDRAM
modules
Expansion — supported in 32-MB, 64-MB, 128-MB, and
256-MB DIMMs
Cache Memory
pipelined 32-bit addressing
64-bit data
Read Only Memory (ROM)
Flash ROM — 2 Mbit
Calendar Clock
Year/month/day/hour/minute/second/.01 second; maintained
by battery backup module
Battery type — Lithium coin cell
Input/Output (I/O) Facilities
Industry-standard interfaces integrated on system board:
Parallel — bi-directional, ECP/EPP support; one 25-pin
connector
Serial — two high-speed RS-232C ports using 16550
UART, support transfer rates up to 115.2 KB per second;
9-pin connectors