AT&T 3B2/300 Technical Reference Manual page 275

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
\
I
PERIPHERAL
PBRQ[O] UNIT
I
SYSTEM
PBACK[O]
I
I
I
~
\
:/
\_
PERIPHERAL
PBUSY[O]
I
I
UNIT
I
I
PR[l]W[O]
:(
~ >-
PERIPHERAL
PSIZE16[0]
V AUD ADDRESS
UNIT
PPA23-00[!]
I
I
I
I
I
I
PPAS[O]
7'
\
V
c::
PERIPHERAL
UNIT
I
I
( ~
):
PDIS-00[1]
VALID DATA SYSTEM
I
I
PDSl-0[0]
~·
\
/:
c::
PERIPHERAL
I
UNIT
PDTACK[O]
PFLT[O]
\
V
SYSTEM
Figure 3-8: Peripheral Controller Main Memory Read Operation
3-22 TECHNICAL REFERENCE MANUAL