HP 9000/742i VME Workstation
Overview
Project name:
- Sidewinder
Internals
The Sidewinder is a so-called Single Board Computer (SBC), based on VME. It features basically the same core electronics as the 715/50 on a single board, but has fewer expansion possibilities —it takes only a small amount of RAM, has no on-board expansion slots and graphics hardware (serial console has to be used). The SCSI I/O is routed through the VME-P2 connector at the rear. Since the board features a VME controller it is able to talk to other VME devices on the same bus (and control them).
CPU
- PA-7100 50MHz with 64/64KB off-chip I/D L1 cache
Chipset
- ASP chipset, featuring:
- NCR 53C700 8-bit single-ended SCSI-2
- Intel 82596DX 10Mb Ethernet controller
- WD 16C552 parallel
- NS 16550A compatible serial
- 512KB EPROM - the Boot ROM
- 8KB EEPROM for storing system configuration status etc.
- Intel 8042 microprocessor controlling:
- battery backed RTC
- system & user timers
- audio generator
- HP-HIL interface
- frontpanel system status LEDs
- Intel 82501AD Ethernet transceiver
- Mongoose ASIC, EISA bus-adaptor
- CRX graphics, 8-bit
- CS4215 CODEC for 16-bit stereo audio
- VME bus-adaptor
Buses
- VSC memory/CPU bus
- GSC system-level I/O bus
- VME bus
- SCSI-2 narrow single-ended bus.
Memory
- 72-pin ECC SIMMs
- Takes 8-32MB modules
- Two slots
- 16MB (2×8) minimum, 64MB (2×32) maximum
Expansion
- no
External Connectors
- 50-pin HD SCSI-2 Fast-Narrow single-ended
- Two DB9 male RS232C serial
- DB25 female parallel
- DB15 15-pin AUI 10Mbit Ethernet
References
- 742i Owner’s Guide (PDF, 1.5MB)
Operating Systems
Benchmarks
| Model | SPEC95, int | SPEC95, fp |
|---|---|---|
| 742i/50 | 1.53 | 2.46 |
Compare these with other results on the Benchmarks page.
Physical dimensions/Power
- 40×233×160mm height/width/depth
- height of 2 VMEbus slots
- 0.91kg weight
- 35W @ +5V DC
- 0.12W @ +12V DC
- 0.12W @ -12V DC