Control Data Cyber 170 State Hardware Reference Manual page 69

IOU Reconfiguration
IOU Reconfiguration
The logical PP numbers and hardware are assigned to physical PPs circularly
from the settings of
IOU
deadstart display PPM
CONF and BRL CONF parameters,
specifying which physical barrel and PPM is PPO. Maximum values for these
parameters depend on the number of PPs installed (table 3 - 4 ) .
Illegal values
entered in BB X and RP XX commands are rejected by the deadstart display and
cause error messages to appear on the acreen (refer to the hardware operator's
guide). ~econfi~uration i s discussed in detail in the hardware operator's
guide.
Tables 3-5 and 3-6 show allowable values for the PPM CONF and BRL CONF
parameters and reconfiguration examples.
Table 3 - 4 .
Barrel Numbering Table
Logical PPs in Physical Barrel With
BARREL RECONFIGURATION Switch Values
Barrels Installed Physical Barrel 0 1
2
3
Four Barrels
(20 PPs)