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CONTROLLING SYSTEM ACTIONS
Execute 510 instruction.
accepted" indicator.
Set "SIO not
accepted" indicator.
Set Unusual
End indicator.
Set Transmission Date
Error indicator.
Set Incorrect
Length indicator.
Set Channel
End indicator.
1 - - - -
t - - -
-
I - - - -
1 - -
-
-
Advance to
11
busy"
condition.
Signal
11
unusual end"
to contra
11
i ng system.
Signal
11
data
transmission error
11
to controlling system.
DISK STORAGE SYSTEM ACTIONS
I
\
\~)
r"'
U. E.
Request and receive order byte
from controlling system.
I
\
T.E.J
I - \
~'/
u
Return to "ready"
condition and wait
for next SIO.
Signal'' incorrect length"
to controlling system.
I - \
c.:_:·1
Signal
11
channel end
0
to controlling system.
Figure 2. Controlling/Disk Storage System Actions
14
Programming Considerations
..
"
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