Such lookups take one instruction and two instruction cycles.
2.
Interrupt latency is constant at three instruction cycles.
3.
The Pegasus basic instruction cycle time for add / subtract / move and logical instructions was 128 microseconds.
4.
In simpler CPUs the instruction cycle is executed sequentially, each instruction being processed before the next one is started.
5.
External interrupts have to be synchronized with the four-clock instruction cycle, otherwise there can be a one instruction cycle jitter.
6.
External interrupts have to be synchronized with the four-clock instruction cycle, otherwise there can be a one instruction cycle jitter.
7.
Data could therefore be rotated, masked, modified, shifted and merged ( in that order ), all in one instruction cycle.
8.
Fetching sequentially from one physical bank would result in a latency of two instruction cycles before the data was loaded into the destination data pad.
9.
Flying in to begin the first Operation Momentum instruction cycle, the H-34 carrying Lair ran out of lift to clear a ridge-line.
10.
In this fashion a stream of FADD operations could be performed in a pipeline, with a new result in every instruction cycle though every addition requires two cycles.
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