Technical data
Table Of Contents
- Technical Reference Manual for OEMs HP Models 743, 744, and 748
- Contents
- 1 General Information
- Model 743 and Model 744 VME Board Computers
- Product Description
- Supported Configurations
- Model 743 and Model 744 External Devices
- Keyboard and Mouse
- Model 743 and Model 744 Cables
- Model 743 and Model 744 Functional Description
- Model 744 Block Diagram
- CPU Circuit
- Boot ROM Circuit
- Graphics Circuit
- Model 743 Memory Controller Circuit
- Model 744 Memory Controller Circuit
- LED Displays
- I/O Controller ASIC
- VME Controller ASIC
- I/O Expansion
- I/O Expansion Block Diagrams
- Model 748 Ruggedized Workstation
- Model 743 and Model 744 VME Board Computers
- 2 References
- 3 Quality
- 4 Mechanical Information
- 5 Electrical Information
- Video Connector Pinouts
- Audio Connector Pinouts
- HP Parallel Connector Pinouts
- RS-232 Connector Pinouts
- AUI LAN Connector Pinouts
- Single-Ended SCSI Connector Pinouts
- FW SCSI Connector Pinout
- PS/2 Connector Pinouts
- VME Connector Pinouts
- Real-Time Clock (RTC) Battery Information
- Video Output Signal Specifications
- Video Timing Specifications
- 6 Power Requirements
- 7 Product Design Considerations
- Index

1-29
General Information
Model 748 Ruggedized Workstation
NOTE: Only one of the Human Interfaces (HP-HIL or PS/2) can be used at a time. Use of one interface
excludes the other interface.
PCI Module The Model 748 is available with a module that provides four slots for customer
provided PCI accessory cards. The module supports the +5 Vdc PCI bus signalling card type.
VME Module A variety of VME accessory cards can be installed in the Model 748 ’s 8-slot
VME module (slots 3 through 8 are for add-on cards). The slots conform to the 6U form fac-
tor. Slot numbers are 8 through 1, top to bottom. The VME backplane provides an intercon-
nect connector for the EISA module.
NOTE: A Model 743 or 744 must be installed in VME Slot 1 to provide VME Slot 1 controller
functions (bus arbitration) for any VME boards installed in VME slots 3 through 8.
Table 1-26 Supported EISA Accessory Cards
Product
Number
Product Name
Quantity
Supported
Notes
HP 2070B Instrument HP-IB Up to 4
HP 20711 High-Speed Instrument HP-IB Up to 4
GPIO Interface Card 1
HP 25525B Differential SCSI Up to 4
HP 25560A HP-IB Host Adaptor 1
HP 25567B IEEE 802.3 Thin/AUI LAN Up to 4
HP J2159A PSI/X.25 Interface Up to 4
HP J2165A Token Ring 802.5 Up to 4
HP J2645AA 100VG-Any LAN Up to 4
HP J2802B HP ATM Adapter Card Up to 4










