The Pegasus basic instruction cycle time for add / subtract / move and logical instructions was 128 microseconds.
3.
Along with a carry flag, a sign flag and an overflow flag, the zero flag is used to check the result of an arithmetic operation, including bitwise logical instructions.
4.
The eSi-RISC instruction set includes arithmetic and logical instructions ( including barrel-shift, multiply and divide ), comparisons, load and stores, branches and calls as well as system level instructions to control interrupts and enter lower power states.
5.
And, by cleverly planning a series of extractions and pouring solutions together, which would simulate the logical instructions of the encryption scheme, Lipton, Boneh and Dunworth found a way to test all of the keys simultaneously, and then extract, at the end, the DNA sequence corresponding to the key that unlocks a particular message.
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