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Technical Reference Manual for OEMs
HP Models 743, 744, and 748
HP Part No. A4511-90601
Printed in USA
August, 1997
Special Online Edition 1199
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Legal Notices
Legal Notices
Manual Content
Information in this manual is subject to change without notice.
Hewlett-Packard makes no warranty of any kind about this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Hewlett-Packard shall not be liable for errors contained herein or direct, indirect, special,
incidental, or consequential damages about the furnishing, performance, or use of this material.
ii
Copyright © Hewlett-Packard Company 1994, 1995, 1996, 1997, 1999. This document contains information which has been protected by copyright. All rights are reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as
allowed under the copyright laws.
Software mentioned and documentation is based in part on the Fourth Berkeley Software
Distribution under license from the Regents of the University of California.
Restricted Rights Legend
Use, duplication, or disclosure by the United States Government is subject to restrictions as
set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software
clause at FARs 52.227.7013.
Hewlett-Packard Company
Embedded Systems Operation
3000 Minuteman Road
Andover, MA 01810
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Printing History
Printing History
The printing date and edition number shown is the current edition of this manual. The printing date changes when a new edition is printed. Minor changes may be made at reprint without changing the printing date.
August 1994, Edition 1
April 1995, Edition 2
September 1995 Edition 3
June 1996, Edition 4
December 1996, Edition 5
March 1997, Edition 6
August 1997, Edition 7
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iii
Safety Symbols and Conventions
Safety Symbols and Conventions
This manual uses the following conventi ons:
NOTE: Notes conta in important information set off from the text.
CAUTION: Caution messages indicate procedures which, if not observed, could result in damage to
equipment. Do not proceed beyond a CAUTION sign until the indicated conditions are fully
understood and met.
WARNING: Warning messages indicate procedures or practices which, if not observed, could result
in personal injury. Do not proceed beyond a WARNING sign until the indicated
conditions are fully understood and met.
iv
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Contents
1 General Information
Model 743 and Model 744 VME Board Computers 1-2
Product Description 1-2
Supported Configurations 1-7
Model 743 Memory 1-7
Model 744 Memory 1-7
System Graphics 1-8
Model 743 and Model 744 External Devices 1-9
Keyboard and Mouse 1-9
Model 743 and Model 744 Cables 1-9
Model 743 and Mod e l 744 Functional Description 1-11
Model 744 Bloc k Diagram 1-14
CPU Circuit 1-15
Boot ROM Circuit 1-16
Graphics Circuit 1-16
Model 743 Memory Controller Circuit 1-17
Model 744 Memory Controller Circuit 1-17
LED Displays 1-18
I/O Controller ASIC 1-18
VME Controller ASIC 1-23
I/O Expansion 1-25
I/O Expansion Bloc k Diagrams 1-26
1-6
Model 748 Ruggedized Workstation 1-27
Product Description 1-27
Supported Configurations 1-27
Model 748 Ruggedized Workstation Functional Description 1-30
Environmental Specifications for Monitors 1-31
Original Equipment Manufacturer (OEM) Support Overview 1-32
Standard Support 1-32
Additional OEM Support Programs 1-32
2 References
HP Hardware Manuals 2-2
Contents-1
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Contents
Installation Guides 2-2
Service Manuals 2-2
Diagnostic Manuals 2-3
HP Software Manuals 2-4
3 Quality
Safety Compliance Programs 3-2
Introduction 3-2
Underwriter’s Laboratories (USA) 3-2
Canadian Standards Association (Canada) 3-2
TUV Rheinland (Germany) 3-2
Electromagnetic Compatibility Programs 3-3
Introduction 3-3
Federal Communications Commission (USA) 3-3
European Community 3-3
Voluntary Control Council for Interference (Japan) 3-3
Overview 3-4
Electromagnetic Field Emissions Test Suite 3-4
Electromagnetic Field Immunity/Susceptibility Test Suite 3-5
Line Transients Immunity/Susceptibility Test Suite 3-6
Climatic and Dynamic Environmental Ruggedness 3-8
Introduction 3-8
Overview 3-8
Temperature, Humidity, and Altitude Test Suite 3-9
Acoustics 3-11
Sound Power Leve ls 3-11
Statistical Reliability 3-12
Annualized Failure Rate Projections 3-12
Mean Time Between Failure Computations 3-12
Contents-2
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Contents
4 Mechanical Information
Model 743 and Model 744 VME Board Computers 4-2
Key Components 4-2
Air Flow Requirements 4-4
Interface Connectors 4-6
Mechanical Dimensions 4-7
Model 748 Chassis and Modules 4-20
Weights 4-27
Mounting and Support 4-28
Mechanical Drawings 4-28
Conversion Cables 4-28
Chassis Parts and Models 4-29
5 Electrical Information
Video Connector Pinouts 5-3
Audio Connector Pinouts 5-8
HP Parallel Connector Pinouts 5-10
RS-232 Connector Pinouts 5-12
AUI LAN Connector Pinouts 5-14
Single-Ended SCSI Connector Pinouts 5-16
FW SCSI Connector Pinout 5-18
PS/2 Connector Pinouts 5-20
VME Connector Pinouts 5-21
Real-Time Clock (RTC) Battery Information 5-37
Battery Specifications 5-37
Video Output Signal Specifi cations 5-37
Video Timing Specifications 5-37
6 Power Req uirements
Power Distribution 6-2
FW SCSI Estimated Power Consumption 6-6
Monitor Power Specifications 6-6
Contents-3
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Contents
Power Budgeting 6-7
7 Product Design Considerations
Application Information 7-2
VME Services Updates 7-2
VME Systems Design Considerations for Models 743, 744, and 748 7-2
System Integration 7-3
Hardware Power On Information 7-3
Contents-4
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1
General Information
The General Information Chap ter provides ge neral informa tion on the Model 743 and Model
744 VME Board Computers, the Model 748 Ruggedized Workstation, environmental specifications for the supported monitors, and OEM support.
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1-1
General Information
Model 743 and Model 744 VME Board Computers
Model 743 and Model 744 VME Board Computers
The sections that follow contain the Model 743 and Model 744 VME Board Computer product descriptions and functional descriptions.
Product Description
HP Model 744 VME Board Computers are based on the PA 7300LC CPU. HP Model 743
VME Board Computers are based on th e PA 7100LC CPU. Running either HP-UX or HP-R T
operating systems, they are typically installed in a VME backplane.
• Model 744/165L: HP-UX operating system, 165 MHz system clock
• Model 744rt/165L: HP-RT operating system, 165 MHz system clock
• Model 744/132L: HP-UX operating system, 132 MHz system clock
• Model 744rt/132L: HP-RT operating system, 132 MHz system clock
• Model 743i/64: HP-UX operating system, 64 MHz system clock
• Model 743i/100: HP-UX operating system, 100 MHz system clock
• Model 743rt/64: HP-RT oper ating system, 64 MHz system clock
• Model 743rt/100: HP-RT operating system, 100 MHz system clock
Each board computer is complete with the core I/O of an HP-PA workstation in a single-slot
VME solution with expandabi lity for more I/O or RAM in a two-slot o r three -slot VME solu tion. The core design incl udes appl icat ion-s pecif ic int egrated ci rcuit s (ASICs) that a dd VME
and real-time features.
Figure 1-1 illustrates the front panel of Model 743 and Model 744 Board Computers.
Figure 1-1 Model 743 and Model 744 VME Board Computer Front View
Table 1-2 lists the feature sets of the Model 743i VME Board Computer
1-2
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Model 743 and Model 744 VME Board Computers
.
Table 1-1 Model 743i (A4260A) and 743rt (A4261A) Features
Feature Specifications
VME Slot Configuration Single Slot - Standard features
Two Slots - GSC expansion kit (A4219A),
or PMC Bridge Adapter (A4504A)
Three Slots - ATM card (J3420A) and GSC expansion kit (A4219A),
or PCI Mezzanine Card (PMC) Expansion Adapter (A4509A)
CPU 64 or 100 MHz PA-RISC PA7100-LC
256 KB cache
1 KB on-chip instruction cache
Floating point coprocessor
64-bit wide ECC memory controller
Clocks Battery backed real-time clock
Interval timers (one 32-bit and two 16-bit)
Watchdog timer
General Information
Operating System HP-UX 9.05 or later, or
HP-RT 2.21 patch or later
User Interface HP VUE graphical user interface (HP-UX 9.05 or later)
HP CDE graphical user interface (HP-UX 10.10 or later)
HP-RT
Compatibility Source and binary code compatible with the Series 700 pr oduct family
Monitors Single or multiple display depending on the number of installed graphics options (on-
board and/or external). HP-UX 9.x sup po rt s up to two di sp lay s an d HP- UX 10 .x supports
up to three displays.
Color monitors
17-inch, 1280 x 1024
19-inch, 1280 x 1024
Terminals - Text only connected to RS-232C port
Optional Graphics On-board (option 202=64MHz w/graphics or option 204=100MHz w/graphics)
Main Memory Single VME Slot Configuration - 32 to 128 MB (A4265A=32MB, or A4266A=64MB)
Two VME Slots Configuration - 32 to 256 MB
Standard Features Internal SCSI-2 single-ended bus
CD-Quality audio (not supporte d on HP-RT)
Two asynchronous RS-232-C ports
One HP parallel port
One LAN AUI port
Two mini-DIN PS/2 ports
Two sites for memory cards
Video connector for onboard graphics
Two Slot Upgrades PMC Bridge Adapter (A4504A) with two PMC sites
GSC Expansion kit (A4219A) with two GSC sites
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1-3
General Information
Model 743 and Model 744 VME Board Computers
Table 1-1 Model 743i (A4260A) and 743rt (A4261A) Features
Feature Specifications
Three Slot Upgrades PMC Expansion Adapter (A4509A) with two additional PMC sites
ATM card (J3420A) (Req uires GSC expan sion kit A42 62A - one additio nal site suppor ted
for 3x5 GSC card) (Not available with HP-RT)
Table 1-2 lists the feature sets of the Model 744/132L VME Board Computer
.
Table 1-2 Models 744/132L (A4500A) and 744rt/132L (A4520A) Features
Feature Specifications
VME Slot Configuration Single Slot - Standard features
Two Slots - PMC Bridge A dapter (A4504A)
GSC expansion kit (A4219A)
HCRX graphics (A4315A or A4316A)
FWD SCSI (A4268A)
8-plane graphics (A4267A)
Three Slots - ATM card (J3420A) and expansion kit (A4219A), or
PMC Expansion Adapter (A4509A)
CPU 132 MHz PA-RISC PA7300-LC
128 KB Primary internal cache (64 KB instruction cache, 64KB
data cache)
Clocks Battery backed real-time clock
Interval timers (one 32-bit and two 16-bit)
Watchdog timer
Operating Sy stem HP-UX 10.20 or later, or HP-RT 2.21 patch or later
User Interface HP VUE graphical user interface (HP-UX)
HP CDE graphical user interface (HP-UX)
HP-RT
Compatibility Source and binary code compatible with the Series 700 product family
Monitors Single or multiple display depending on the number of installed graphics options
(on-board and/or external)
Color monitors
17-inch, 12 80 x 1024
19-inch, 12 80 x 1024
Terminals - Text only connected to RS-232C port
Optional Graphics Onboard (A4500A option 120)
PMC Visualize-EG Graphics Card (A4979A)
Note: A maximum of four graphics displays are allowed with HP-UX 10.10
ACE and later releases, a maximum of one graphics display with HP-RT.
Main Memory Single VME Slot Configuration - 64 to 256 MB A4503A, A4449A, A6005A)
Two VME Slots Configuration - 64 to 1024 MB
1-4
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Model 743 and Model 744 VME Board Computers
Table 1-2 Models 744/132L (A4500A) and 744rt/132L (A4520A) Features
Feature Specifications
Standard Features Internal SCSI-2 single-ended bus
CD-Quality audio (not supported on HP-RT)
Two asynchronous RS-232-C ports
One HP parallel port
One LAN AUI port
Two mini-DIN PS/2 ports
One site for memory card stack
Video connector for onboard graphics
Conversion cables are included in base kit.
Two Slot Upgrades PMC Bridge Adapter (A4504A) with two PMC sites
GSC Expansion kit (A4219A) with two GSC sites)
Three Slot Upgrades PMC Expansion Adapter (A4509A)
ATM card (J3420A) (Requires GSC expansion kit A4219A - one additional site
supported for 3x5 GSC card) (Not available with HP-RT.)
General Information
Table 1-3 lists the feature sets of the Model 744/165L VME Board Computer
.
Table 1-3 Model 744/165L (A4511A) and 744rt/165L (A4512A) Features
Feature Specifications
VME Slot Configuration Single Slot - Standard features
Two Slots - PMC Bridge Adapter (A4504A)
GSC expansion kit (A4219A)
Three Slots -ATM card (J3420A) and expansion kit (A4219A), or
PMC Expansion Adapter (A4509A)
CPU 165 MHz PA-RISC PA7300-LC
128 KB Primary internal cache (64 KB instruction cach e, 64KB data
cache)
512 KB Secondary external cache
Clocks Battery backed real-time clock
Interval timers (one 32-bit and two 16-bit)
Watchdog timer
Operating System HP-UX 10.20 or later, or HP-RT 3.01 patch or later
User Interface HP VUE graphical user interface (HP-UX)
HP CDE graphical user interface (HP-UX)
HP-RT
Compatibility Source and binary code compatible with the Series 700 product family
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1-5
General Information
Model 743 and Model 744 VME Board Computers
Table 1-3 Model 744/165L (A4511A) and 744rt/165L (A4512A) Features
Feature Specifications
Monitors Single or multiple display depending on the number of installed graphics options
(on-board and/or external)
Color monitors
17-inch, 1280 x 1024
19-inch, 1280 x 1024
Terminals - Text only connected to RS-232C port
Optional Graphics Onboard (A4500A option 120)
PMC Visualize-EG Graphics Card (A4979A)
Note: A maximum of four graphics displays are allowed with HP-UX 10.10 ACE
and later releases, a maximum of one graphics display with HP-RT.
Main Memory Single VME Slot Configuration - 64, 128, or 256 MB (A4503A, A4449A or
A6005A)
Two VME Slots Configuration - 64 MB to 1024 MB
Standard Features Internal SCSI-2 single-ended bus
CD-Quality audio (not supporte d on HP-RT)
Two asynchronous RS-232-C ports
One HP parallel port
One LAN AUI port
Two mini-DIN PS/2 ports
One site for memory card stack
Video connector for onboard graphics
Conversion cables are included in base kit.
Two Slot Upgrades PMC Bridge Adapter (A4504A) with two PMC sites
GSC Expansion kit (A4219A) with two GSC sites
Three Slot Upgrades PMC Expansion Adapter (A4509A)
ATM card (J3420A) (Requires GSC expansion kit A4219A - one additional site
supported for 3x5 GSC card) (Not available with HP-RT.)
1-6
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General Information
Model 743 and Model 744 VME Board Computers
Supported Configurations
This section discusses the following supported configurations: memory, system graphics,
external devices, cables, and keyboard and mouse.
Hewlett-Packard only supports products having Hewlett-Packard approved parts, accessories, peripherals, operating systems, and application programs.
Model 743 Memory
Standard memory is Error Checking and Correcting (ECC) RAM cards. Up to four RAM
cards may be installed. RAM upgrades include:
• HP A4265A 32 MB RAM Card
• HP A4266A 64 MB RAM Card
Model 743 VME Board Computers use custo m 60-ns TSOP-based RAM card s. Use of TSOP
packaging allows adequate cooling in single-slot installations.
T wo stack location s for RAM cards a re used. The primary RAM stack is on t he right s ide, the
secondary one is on the left side. Only one RAM card can be used in the secondary, or left
stack, if a GSC+ card is ad ded i n t he s eco ndar y GSC+ s lot . Thr ee RAM ca rds can be used in
the primary stack. If more tha n one RAM card is use d in eith er stac k, the opti onal HP 4262 A
GSC Expansion Kit or A4504A PMC Bridge Adapter (HP-UX only) must be installed; then
the board computer will occupy two VME slots in a VME chassis.
RAM cards may be placed in any order. A higher density card can be added on top of a low
density card and vice versa.
Model 744 Memory
Standard memory is Error Checking and Correcting (ECC) RAM cards. Up to four RAM
cards may be installed. RAM upgrades include:
• HP A4501A 64 MB RAM Card
• HP A4449A 128 MB RAM Card
• HP A6005A 256 MB RAM Card
Model 744 VME Board Computers use custo m TSOP-based RAM cards. Us e of TSOP pack aging allows adequate cooling in single-slot installations.
There is only one stack l ocation f or RAM cards on the Model 744. Memory ca rds are st acked
in the same orientat ion; th at is, t here is no nee d to rot ate cards 18 0 degree s rela tive t o the previously inserted card as in the Model 743. If more than one RAM card is used, the optional
HP 4219A GSC expansion kit must be installed; then the board computer will occupy two
VME slots in a VME chassis.
When mixing the 128 MB and 256 MB RAM card wi th c ar ds o f a different capacity, the 128
MB and 256 MB card(s) must always be in the lower memory slots.
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1-7
General Information
Model 743 and Model 744 VME Board Computers
System Graphics
The Model 743 and Model 744 Board Computers can be ordered with optional on-board
graphics.
The Model 744 supports up to four optional PMC Visualize-EG graphics cards.
The HP-UX 10.20 ACE operating system supports up to four displays.
The HP-RT operating system supports only one graphics display.
Table 1-4 shows the display resolutions and refresh rates that are supported on current and
older graphics devices.
NOTE: The HCRX graphics options support a Frame Buffer of 1280 by 1024; therefore, the monitor
selected must support a resolution of 1280 by 1024.
Table 1-4 Supported Graphics Configurations
Display
Pixel
Resolution
1280x1024* 75 Hz
1024 x 768* 75 Hz
800 x 600 75 Hz • •
640 X 480 75 Hz
Display
Refresh
Rate
72 Hz
70 Hz
60 Hz
On-
board
Graphic
s
•* •* •
•* •*
••
HP A4267A
GSC Card
8-Plane
HP A4315A 8-Plane
or
HP A4316A 24-Plane
HCRX Graphics
•
With the D8900A monitor, HP-UX 10.20 ACE or 11.00, and the A4267A graphics card or
Model 743 onboard graphics, these resolutions are not supported.
1-8
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General Information
Model 743 and Model 744 VME Board Computers
Model 743 and Model 744 External Devices
The Model 743 and Model 744 support the following external devices:
• LAN Transceiver (Medium Attachment Unit)
HP 28641B ThinLAN Ethernet Transceiver (order number A2670A)
HP 28685B Ethertwist Transceiver (order number A2671A)
HP 28683A Fiber Optic Hub/Transceiver
• Speaker: 8 ohm impedance with 1/8-inch sub-miniature stereo connector
• Single-ended SCSI through the onboard SE SCSI adapter
Keyboard and Mouse
The Model 743 and Model 744 support the mouse with mini-DIN connector (PS/2) and keyboard with mini-DIN connector (PS/2) included in the HP A4030D Localization Kit.
Model 743 and Model 744 Cables
Table 1-5 and Table 1-6 show the part numbers for standard cables and conversion cables
used to interface with the Model 743 and Model 744 I/O backplanes.
Drawings showing mechanical and electrical characteristics for these cables are available.
Refer to chapter 4 in this manual for more information.
Table 1-5 Model 743 and Model 744 Standard Cables
Product
Number
HP 24524G RS-232 3-meter terminal cable; 9-pin female to 25-pin male
HP 24524H RS-232 3-meter modem cable; 9-pin female to 25-pin female
HP C2950A HP Parallel DB 25-pin male to 36-pin Centronics male
HP 92284A HP Parallel DB 25-pin male to 25-pin male
HP K2296 SCSI-2
a.Additional lengths are available.
Interface Cable Type
0.9 meter high-density 50-pin to standard bail lock
Conversion cables provide a way to connect a standard cable to the high-density connectors
on the Model 743 and Model 744 front panels.
All conversion cables, except the A4167A, are 762 plus/minus 30mm (30 plus/minus 1.18
inch) long. The A4167A cable is 250 mm (10 inches) long.
a
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1-9
General Information
Model 743 and Model 744 VME Board Computers
Table 1-6 Model 743 and Model 744 Conversion Cables
Product
Number
Interface Cable Type
HP A4300A HP parallel High-density 25-pin to standard 25-pin female
HP A4301A RS-232 High-density 9-pin to standard 9-pin male
HP A4302A Audio High-density 9-pin to stereo line-in
HP A4303A LAN High-density 15-pin to 15-pin AUI
HP A4304A Video (743) High-density 15-pin to standard 15-pin female
HP A4223A Video (744) High-density 15-pin to standard 15-pin female
HP A4305A Video (743/744) High-density 15-pin to EVC connector
HP A4167A Video (GSC card) Standard 15-pin to EVC connector
1-10
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General Information
Model 743 and Model 744 VME Board Computers
Model 743 and Model 744 Functional Description
This section describes the major components of the Model 743 and Model 744 VME board
computers
The system board contains the following functionality:
• Boot ROMs
•CPU
• Graphics
• I/O controller, which controls these interface circuits:
•Audio
• HP Parallel
• LAN
• RS-232-C
• SE SCSI
• Keyboard and mouse
• Battery-backed Real Time/Time-of-Day clock
• Memory controller
Figure 1-2 shows the major components of the Model 743.
Figure 1-3 shows the major components of the Model 744.
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1-11
General Information
Model 743 and Model 744 VME Board Computers
VME Controller
PCMCIA Connector
GSC Bus Connector
CPU (under heatsink)
RAM Card Connectors
I/O Controller
Boot ROM
EEPROM
Optional Onboard
Graphics Controller
Figure 1-2 Model 743 VME Board Computer Functional Components
PCMCIA Connector
GSC Bus Connector
CPU (under heatsink)
Video RAM
(optional onboard graphics)
RAM Card Connectors
VME Controller
EEPROM
IODC
PDC
Audio CODEC
Video RAM
Optional Onboard
Graphics Controller
(optional onboard graphics)
Figure 1-3 Model 744 VME Board Computer Functional Components
1-12
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RAM Card Connectors
I/O Controller
General Information
Model 743 and Model 744 VME Board Computers
Figure 1-4 illustrates the functional architecture of the Model 743 system board.
Figure 1-4 Model 743 Functional Block Diagram
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1-13
General Information
Model 743 and Model 744 VME Board Computers
Model 744 Block Diagram
Figure 1-5 illustrates the functional architecture of the Model 744 system board.
Backplane P1 Connector
Power
Backplane Bus
Reserved Connector
Backplane
Controller
ASIC
EEPROM
REGs
PDC & IODC
SRAM
Firmware
Controller
Controller
ASIC
I/O
RTC
GSC
Connector
RTC
Battery
Second Level
Cache
(165 MHz only)
CPU
Graphics
Controller
ASIC
Backplane P2 Connector
GSC Bus
RAM Stack
RAM Bus
Display
RAM
Power
Slot 2
RAM
Card
64–256 MB
RAM
Card
64–256 MB
RAM
Card
64–256 MB
RAM
Card
64–256 MB
Sysfail
LED
Reset/
Abort
Switch
RS–232 A
Audio
Parallel
Boot/
Run
LED
Figure 1-5 Model 744 Functional Block Diagram
1-14
Speaker
AUI
LAN
PS/2–0
PS/2–1
VideoRS–232 B
SE SCSI
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CPU Circuit
The Model 743 uses a Hewlett-Packard PA-RISC 7100-LC CPU chip and the Model 744
uses a Hewlett-Packard PA-RISC PA7300-LC CPU chip. The CPU chip is the heart of the
CPU circuit. It executes instructions and controls the other circuits.
Table 1-7 lists the CPU performance figures of the Model 743 with HP-UX and Table 1-7
lists the CPU performance figures fo r the Model 744 with HP-UX.
Table 1-7 Model 743 CPU Performance
Model 743i/64 743i/100
HP-UX Version 9.05 10.x 9.05 10.x
MFLOPS (DP) 25.3 22.2 37.8 34.3
MIPS 77.7 121.6 121.8
SPECfp92 96.5 97.05 137.0 138.3
General Information
Model 743 and Model 744 VME Board Computers
SPECint92 66.6 81.1 100.1 115.0
SPECfp95 2.6 3.47
SPECint95 1.9 2.89
Table 1-8 Model 744 CPU Performance
Model 744 Performance
Based on HP-UX 10.20
SPECint95 5.90 7.90
SPECfp95 6.22 7.64
132 MHz 165 MHz
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General Information
Model 743 and Model 744 VME Board Computers
Boot ROM Circuit
The Boot ROM circuits have Boot ROMs containing 2x526 Kilobytes (Model 744) or 512
Kilobytes (Model 743) of information that does the following:
• Manages the internal interface configurations
• Searches for and boots an operating system
• Self-tests the board computer's main circuits
• Starts the CPU functions
An EEPROM stores the following information:
• Internal interface configurations
• LAN ID number
• System board serial number
NOTE: The workstation's LAN ID number's last 6 characters are labeled on the EEPROM. The first
group of six digits are typically “080009” or “0060b0” (the HP-owned prefix).
A PLL Clock Module generates the system clock, on which all timing is based.
Graphics Circuit
System boards with on-boa rd graphic s or graphi cs cards hav e a graphics cont roller ASI C and
the display RAM. Resolution and refresh rate can be configured using the boot console handler for several types of monitors.
A keyboard must be connected to the PS/2 0 port if graphics are used as part of the console
path. When a graphics device is specified as the console path, the boot ROM first checks for
a keyboard by using the keyboard search list. If a keyboard is not found in this search list,
graphics are not enabled.
Table 1-9 summarizes the graphics performance figures for the Model 743 with HP-UX and
Table 1-9 summarizes the graphics performance figures for the Model 744 with HP-UX.
Table 1-9 Model 743 Graphics Performance
2D/3D vectors/sec 1.4M 1.5M 1.6M 2.3M
Model 743 i/64 Model 743 i/100
8 Plane
HCRX 8
and 24
8 Plane
HCRX 8
and 24
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Lighted, shaded quadrilateral/sec 15K 14K 23K 23K
PLBsurf 19 21 23 32
Triangles/sec 26K 25K 40K 40K
X11 Vec/sec 1.2M 1.5M 1.2M 2.1M
Xmark93 8.1 9.3 8.6 12.1
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Table 1-10 Model 744 Graphics Performance
General Information
Model 743 and Model 744 VME Board Computers
On-board
HP Visualize-EG Graphics
X11 Lines 5.74M TBD
Xmark93 33.11 36.47
PLBsurf93 49.7 TBD
PLB wire93 116.1K 135.4K
2D/3D vectors/sec 3.1M TBD
132 MHz 165 MHz
Model 743 Memory Controller Circuit
The CPU’s memory controller circuit manages memory. Up to 256 MB of RAM may be
installed. An Error Checking and Correcting (ECC) function checks memory word read/write
operations. The ECC function detects single-bit and double-bit errors. Single-bit errors are
corrected. Double-bit errors are detected but not corrected. The memory controller circuit
uses a 64-bit memory bus. The following two RAM card locations are used:
• RAM stack 1, behind the PS/2 connectors on the system board. Up to three RAM cards ar e
supported.
Physical RAM slot positions are:
Bottom RAM card, slot 0
Middle RAM card, slot 1
Top RAM card, slot 2
• RAM stack 2, behind the audio connectors on the system board. One RAM card is supported and is in physical RAM slot 3.
Model 744 Memory Controller Circuit
The CPU’s memory controller circuit manages memory. Up to 1 GB of RAM may be
installed. An Error Checking and Correcting (ECC) function checks memory word read/write
operations. The ECC function detects single-bit and double-bit errors. Single-bit errors are
corrected. Double-bit errors are detected but not corrected. The memory controller circuit
uses a 132-bit memory bus. One RAM card location is used, behind the PS/2 connectors on
the system board. Up to four RAM cards are supported.
Physical RAM slot positions are:
Bottom RAM card, slot 0
Second RAM card, slot 1
Third RAM card, slot 2
Fourth RAM card, slot 3
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General Information
Model 743 and Model 744 VME Board Computers
RAM Cards When mixing RAM cards of different capacities that include 128 MB and 256
MB cards, the 128 MB and 256 MB cards must be installed into the lowest numbered memory sites. Memory mapping at turn on determines the size of the card in each location.
LED Displays
Model 743 and 744 VME Board Computers have two LEDs that indicate various system
functions: a system failure LED and a functional LED. See Table 1-11.
Table 1-11 LED Meanings
SYSF AIL
(Red)
Off Off No Power Check for board seating in
On 2Hz Flash Normal Power-on/self-
On Off Memory Failure Troubleshoot for failed RAM
On 1 Flash/sec. CPU (board) Failure Replace the system board.
On 4 Flash/sec. No console identified Check the console search
On On OS is booted with
Off On OS is booted with
POWER
(Green)
Meaning Possible So lution
chassis.
test
card or problem with the
RAM connection.
path and keyboard connections. If no problem is found,
replace the system board.
Check the Operating System
VME services failure
VME services OK
VME services. Check that
VME services is configured
in the kernel.
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I/O Contro ller ASIC
I/O control by the system board’s I/O controller ASIC includes the following interfaces:
•Audio
• AUI LAN
• HP Parallel
• PS/2 Ports 0 and 1
• RS-232 Port A
• Single-Ended SCSI
• Speaker
The batter y-backed real-time clock is also implemented in the I/O controller ASIC.
The connectors for the system board's built-in interfaces are on the front panel. Most use
micro-miniature connectors that require special conversion cables in order to use standard
interface cables.
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Table 1-12 summarizes I/O performance figures for the Model 743.
Table 1-12 Model 743 I/O Performance
I/O Type Performance Notes
Audio * 48 KHz Sampling rate
FW SCSI * 10 MB/second Asynchronous
20 MB/second Synchronous
GSC 32 MHz 64 MHz clock frequency
General Information
Model 743 and Model 744 VME Board Computers
1
33
/3 MHz
HP Parallel 300+ KB/second With DMA
200 KB/second Sustained
LAN 10 Mb/second
PS/2 2.5 K 11-bit samples/sec
RS-232 460.8 Kbps
SE SCSI 5 MB/second Synchronous
1.5 MB/second Asynchronous
* Not supported in HP-RT
Table 1-13 summarizes I/O performance figures for the Model 744
Table 1-13 Model 744 I/O Performance
I/O Type Performance Notes
Audio * 48 KHz Sampling rate
FW SCSI * 10 MB/second Asynchronous
100 MHz clock frequency
20 MB/second Synchronous
GSC 33 MHz 132 or 165 MHz clock
frequency
HP Parallel 300+ KB/second With DMA
200 KB/second Sustained
LAN 10 Mb/second
PS/2 2.5 K 11-bit samples/sec
RS-232 460.8 Kbps
SE SCSI 5 MB/second Synchronous
1.5 MB/second Asynchronous
* Not supported in HP-RT
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General Information
Model 743 and Model 744 VME Board Computers
The sections that follow explain the functions of the interfaces.
Audio Model 743 and Model 744 Board Computers provide compact disc-quality audio
input and output, in stereo, with a 16-bit coder-decoder (CODEC) over a frequency range of
25-20,000 Hz. A stereo headphone mini-plug (8 ohms impedance) provides output. The stereo line-in and mono microphone mini-plugs provide input with the HP A4302A Audio
Cable.
The CODEC combines CD quality stereo A/D converters for microphone and line input levels. D/A converters for dri ving headset and line out puts are used. The input samp ling rate and
format are programmable, as are the input gain control (used for software control of recording levels) and output attenuation.
1
A
/8-inch mini-jack is used for the speaker out connection. The other audio signals are on a
9-pin micro D-sub connector. The output is capable of driving a minimum of 8 ohms. It can
also be used for higher impedance devices with little or no additional distortion.
A voice-quality audio output may be used.
For information o n p rogram ming for audio, re fer to Usin g the Audio De velope r’s Kit (B2355-
90069) and the man page audio.
Table 1-14 lists the Model 743 and Model 744 audio specifications.
Table 1-14 Model 743 and Model 744 Audio Specifications
Function Range
Headphone maximum
output level
Input sensitivity Line in, 2.0 V pp at 47 K ohms microphone, 22 mV
Programmable input gain 0 to 22.5 dB in 1.5 dB steps
Programmable output
attenuation
Programmable rates 8, 11.025, 16, 22.05, 32, 44.1, 48 KHz
Signal to noise ratio Headphone, 61 dB
2.75 V pp at 50 ohms
at 1 K ohm
0 to 96 dB in 1.5 dB steps
Line in, 61 dB
Microphone, 57 dB
NOTE: Audio CD ROMs cannot output to the audio out connector.
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AUI LAN LAN circuits use the Ethernet/IEEE 802.3 standard interface. Only the Attach-
ment Unit Interface (AUI) versi on is used ; no BNC connec tor is provi ded for ThinLAN. The
AUI connector enables connec tions to an exte rnal MAU using the HP A4303A adapt er cable.
Table 1-15 summarizes the LAN AUI interface specifications.
Table 1-15 LAN AUI Specifications
Connector type 15-pin MDSM
Controller Intel 82596C A compatible megacell
Data rate 10 Mbits/sec
Electrical interface AUI
T yp e IEEE 802.3, Ethernet 1.0
Single-Ended SCSI The 8-bit single-ended implementation is compatible with the current
Series 700 products and supports 5 MB/sec data transfer rates.
The SCSI bus is terminated to 3.3 volts through 127 ohms on the system board. If the board
computer is used in a VME chassis having internal mass storage devices, all devices except
the last one must have their terminator removed. If an external disk drive is used, an active
terminator must be used on the last drive’s uncabled connector.
Table 1-16 summarizes the specifications for the single-ended SCSI interface.
General Information
Model 743 and Model 744 VME Board Computers
Table 1-16 Single-Ended SCSI Interface Specifications
Controller NCR 53C710 compatible macrocell, Rev D
Connector type SCSI-II, ALT-1 50-pin high-density thumbscrew
Data rate Asynchronous, 1.5 MBs/second
Synchronous, 5 MB/second
Device limits
Maximum external
cable len gth
Type SCSI-II (ANSI X3.131-1986), 8-bit, single-ended
a.The board computer is the host controller.
7 internal and/or external devices plus the host controller
4 meters (13.1 feet)
a
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