AT&T 3B2/300 Technical Reference Manual page 277

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
PBRQ[O]
\
I
PERIPHERAL
UNIT
SYSTEM
PBACK[O]
PBUSY[O]
:1
\
V
\_
PERIPHERAL
I
UNIT
I I
I
I
PR[l]W[O]
:(
~
:
>-
PERIPHERAL
PSIZE16[0]
V AUD ADDRESS
UNIT
PPA23-00[1]
I I
I
I
I I
7;
\
V
c:::
PERIPHERAL
PPAS[O]
I
UNIT
I
I
I
I
PDIS-00[1]
K
~
VALID DATA
>-
SYSTEM
I I
I I
PDSl-0[0]
=-:::I.
\
/:
c:::
PERIPHERAL
UNIT
PDTACK[O]
PFLT[O]
SYSTEM
Figure 3-9: Peripheral Controller Main Memory Write Operation
3-24 TECHNICAL REFERENCE MANUAL