Starting Your Processor
Chapter 5
5-16
Assigning I/O Rack Numbers
When you select 1/2-slot addressing, each slot corresponds to two I/O
groups. You still assign one rack number to eight groups; however, with
1/2-slot addressing this requires only four slots. Thus, in a 16-slot chassis,
you now can have four I/O racks (Figure 5.12).
Figure 5.12
Assigning I/O Rack Numbers with 1/2Slot Addressing
03
47
03
47
03
47
03
47
15246
I/O group number
Rack 1
Rack 2
Rack 3
Rack 4
I/O Groups 0,1
I/O Groups 2,3
I/O Groups 6,7
I/O Groups 4,5
1771A4B I/O Chassis using 1/2slot addressing
