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