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D-4
110 Backplane Pinout Data
Signal
Definition
NSTS
I/O bus status (negative true).
NSWO
Select code switch
a
(negative true).
NSWI
Select code switch 1 (negative true).
NSW2
Select code switch 2 (negative true).
NSYNC
Synchronize (negative true).
NUAD
Your address; slot/select code select (negative true).
NWAIT
(Not used)
PPON
Primary power on; all outputs in spec.
READ
I/O bus data direction (positive true; high indicates data to lOP).
SGND
Safety ground.
SPON
Same as PPON.
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