1.3 System Description: 500 Models
Figure 3 is a functional block diagram of the DEC 3000 AXP 500 models.
Figure 3 DEC 3000 AXP 500 Models: Functional Block Diagram
19
156
312
15
28
39
Memory
Data
ASICs (4)
ADDR
ASIC
CPU
CACHE
Scatter/
Gather Map
TURBOchannel
Interface ASIC
33
33
TC Option
Slots
TC Option
Slots
SFB
ASIC
TCDS
ASIC
IOCTL
ASIC
SCSI
SCSI
Video
Out
Flash EPROM
256KB
System Card Module
I/O Module
Non-Volatile
Time of Year
Serial Lines
Comm/Printer
ISDN
Audio In/Out
Ethernet
Boot ROM
MLO-012118
Numbers along communication lines indicate their bus width.
Introduction to the DEC 3000 Models 300/400/500/600/700/800/900 AXP 1–9
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