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
1-14
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.
Figure 1-5 Model 744 Functional Block Diagram
RTC
CPU
Backplane
Controller
ASIC
I/O
Controller
ASIC
Graphics
Controller
ASIC
Backplane P1 Connector
Backplane P2 Connector
GSC
Connector
Reserved Connector
RAM Stack
Display
RAM
Backplane Bus
GSC Bus
Power
Power
RTC
Battery
RAM Bus
VideoRS–232 B
RS–232 A
Audio
Speaker
Sysfail
LED
Boot/
Run
LED
Parallel
SE SCSI
AUI
LAN
PS/2–0
PS/2–1
Reset/
Abort
Switch
RAM
Card
64–256 MB
Slot 2
RAM
Card
64–256 MB
RAM
Card
64–256 MB
RAM
Card
64–256 MB
Firmware
Controller
EEPROM
REGs
PDC & IODC
SRAM
Cache
(165 MHz only)
Second Level