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circuits.
If the S,..register is not
specified by the CA field, one circuit
causes a micro-program stop line to be
active.
This line stops the CPU clock
by
blocking the clock start circuit.
If
the S-register is specified by the CA
field, S STOP, and if the process-stop
latch is on as a result of certain
switch conditions, a process-loop-stop
line is made active.
This line allows
CF Sal 100
-
Stop
T4
A
{Not} S-Reg
FL - -
Stop SW
, - - -
Process
Stop
S-Reg
Inst Add Load SW
DLYD Stop SW
OR
I nstr Step SW
FL--
Figure 3-32.
Stop Mnemonic
3-48
~
A
~
-
A
-
the CPU clock .to be started until all
ROS share requests or multiplexor share
requests have been honored.
The CPU
clock is stopped
by
turning off the
clock-start latch.
The process-loop-
stop line blocks the set of the W- and
X-registers so that the micro program
returns to the address of the S STOP
word after execution of any ROS share or
multiplexor share request.
Micro Program Stop
Proc. Loop Stop Active
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