Figure 2-4: Hap-4 Board - PictureTel Concorde 4500 Servicing Manual

UNDERSTANDING THE ELECTRONICS MODULE
2-8
PR3
PR2
PR1
PR0
ID reg
DMA bus_1
DMA bus_0
Multibus data
Multibus address

Figure 2-4: HAP-4 Board

PR0-3
multibus
address
decode
PR0-3
multibus
arbiter
Clock
and
reset
Interrupt
request
register