ZiLOG System 8000 Hardware Reference Manual page 42

HRM Zilog HRM
The pin assignments for the PWA'S installed in backplane
connectors P2/J21 through P2/J30 are described in Tables 2-
10 through 2-16. The following list indicates the tables
and their present respective board assignments:
1.
Table 2-10:
Connector J21, CPU Board
2.
Table 2-11:
Connector J22, Secondary Serial Board
(Option)
3. Table 2-12:
Connector J23, Winchester Disk Controller Board
(Model 21 only)
4. Table 2-13:
Connector J24, Tape Cartridge Controller Board
5.
Table 2-14:
Connector J26, Storage Module Device Controller A
(Model 31 onl y)
6. Table 2-15:
Connector J27, Storage Module Device Controller B
(Model 31 onl y)
7.
Table 2-16:
Connectors J28 through J30, are dedicated for
the
memory bus (Memory Subsystem Controller and Memory
boards) .
2-13
Zilog
2-13