HP 9000/725
| Quick Facts | |
|---|---|
| CPU | 1 PA-7100 (/50, /75) 1 PA-7100LC (/100) 50-100 MHz |
| Caches | 128-512 KB L1 |
| RAM | 256 MB |
| Drives | 3 SCSI 1 FD |
| Expansion | 3 EISA (/50, /75) 1 SGC/EISA (/50, /75) 1 EISA (/100) 3 GSC/EISA (/100) |
| Bandwidth | ? |
| I/O | 10E SCSI 2 serial parallel VGA HIL (/50, /75) SMD-10 (/100) audio |
Overview
These were designated to be smaller replacements for the old 750 servers while still offering the same amount of I/O options. They are technically based on their 715 workstations counterparts.
Introduced: 1992 (725/50) to 1994 for
$17,895 (725/50).
Internals
CPU
- 725/50: PA-7100 50 MHz with 64/64 KB off-chip I/D L1 cache
- 725/75: PA-7100 75 MHz with 256/256 KB off-chip I/D L1 cache
- 725/100: PA-7100LC 100 MHz with with 1 KB on-chip I L1 and 256 KB off-chip unified I/D L1 cache
The 1 KB on-chip L1 cache on systems with a PA-7100LC is not really a true cache.
Chipset
725/50 and 725/75
- ASP chipset.
- NCR 53C700 8-bit single-ended SCSI-2
- Intel 82596DX 10 Mbit Ethernet controller
- WD 16C552 parallel
- NS 16550A compatible serial
- 512 KB EPROM - the Boot ROM
- 8 KB EEPROM for storing system configuration status etc.
- Intel 8042 microprocessor
- Intel 82501AD Ethernet transceiver
- CRX graphics, 8-bit
- CS4215 CODEC for 16-bit stereo audio
- Viper memory and I/O controller
- Intel 82350 EISA bus adapter chipset (EISA to GSC)
725/100
- LASI chipset.
- NCR 53C710 8-bit single-ended SCSI-2
- Intel 82596CA 10 Mbit Ethernet controller
- WD 16C522 compatible parallel
- Harmony CD/DAT quality 16-bit stereo audio
- NS 16550A compatible serial
- Wax chip
- EISA bus converter (GSC-to-EISA)
- Second RS232 serial
- HP-HIL
- Artist graphics, 8-bit
- Intel 82503 Ethernet transceiver, media auto-selection
- CS4215 or AD1849 programmable CODECs
- WD37C65C Floppy controller
- Two AM29F010 Flash EPROMs
Buses
- GSC system-level I/O bus
- EISA additional I/O expansion bus
- 725/50, 725/75: PBus processor/memory bus
- 725/50, 725/75: VSC main system bus
- 725/50, 725/75: SGC expansion of the mainbus to the SGC expansion card
- SCSI-2 single-ended narrow bus (Fast on 725/100)
Memory
- 72-pin ECC SIMMs
- Takes 8-32 MB modules
- Eight sockets
- 32 MB (2×16) minimum, 256 MB (8×32) maximum
Expansion
- 725/50, 725/75: Three EISA expansion-slots,
One slot for either a SGC (EISA formfactor) or EISA card. - 725/100: One EISA expansion slot,
Three slots for either GSC (EISA formfactor) or EISA cards.
Drives
- One tray for one 3.5″ Narrow SE 50-pin SCSI hard drive
- One tray for one 3.5″ Floppy drive
- Two trays for one half-height 5.25″ Narrow SE 50-pin SCSI drive each, externally accessible
(725/100 supports Fast-Narrow drives)
External connectors
- 50-pin HD SCSI-2 Narrow SE single-ended (Narrow-fast on 712/100)
- Two DB9 male RS232C serial
- DB25 female parallel
- 15-pin AUI 10 Mbit Ethernet
- HD15 VGA
- 725/50, 725/75: HP-HIL connector for input devices
- 725/100: SMD-10 connector, to connect HIL/PS2 with a special adapter [pic]
- Four phone jacks (microphone, headphones, line-in and ?)
References
Operating systems
- 725/50, 725/75: HP-UX: every release from 10.01-10.20 works.
- 725/100: HP-UX: every 32-bit release from 10.01-11.11 works.
- NeXTSTEP: Version 3.3 works fine.
- Linux: works.
- OpenBSD: works
- NetBSD: experimental support as of 5/2005.
Benchmarks
| Model | SPEC95, int | SPEC95, fp |
|---|---|---|
| 725/50 | 1.53 | 2.46 |
| 725/75 | 2.51 | 3.85 |
| 725/100 | 3.76 | 4.06 |
Compare these with other results on the Benchmarks page.