292-F fileQ,+Qu QI+QO MUX o SO MUX D D Q Q -000 ... C Cle 3 register cycle 4 Read register o le4 ......
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292-F fileQ,+Qu QI+QO MUX o SO MUX D D Q Q -000 ... C Cle 3 register cycle 4 Read register o le4 ... as JCXZ exchange test and set Lock. Lock: Lock: Loopl: Lock