Technical data

3-10 Theory of Operation
– LED
– Audio Tone Generator
– SCSI Bus*
– Centronics Parallel*
– RS-232 Serial Input/Output
– The system calendar with battery backup
• ISA Subset Bus Interface*
• HP-IB Bus Interface*
• DIO II and SGC* Bus slot for graphics controllers
• DIO Bus Interface
• DIO II Bus DMA support for SCSI and Centronics Parallel Interface Control
-
lers*
CPU
The CPU executes MC68030 instructions in response to the operating system and user
programs.
FPU
The MC68882 floating-point coprocessor executes floating-point math routines in
hardware under the control of microcode. The FPU shares the CPU’s access to the
memory.
Boot ROM and Configuration EEPROM
The Boot ROM stores self test diagnostics and the system configuration program. The
EEPROM stores the following information:
• Node ID
• 802.3 LAN ID
• Data from the configuration program, such as
– System operating mode (HP-UX Compatible or Domain Compatible)
– Primary network selection for Domain Compatible mode systems
– Integrated interface parameters for HP-UX Compatible mode systems