Abstract: A semiconductor chip with a first processing element, a state machine, a first read first-in first-out (FIFO) memory component, and a second read FIFO memory component. The state machine receives a request from the first processing element for a first value from the first read FIFO memory component and a second value from the second read FIFO memory component. The first processing element may change from an active state to a second state after submitting the read request. The state machine may determine if the first and the second FIFO memory components have data. The first processing element changes back to the active state after the state machine transfers the first and second values to registers.

Abstract: Combinational circuits in a microprocessor execute instructions to perform permutations on bits of a source byte in a single clock cycle. Each bit in the source byte is permuted in accordance with a permutation map. The only storage within the processor core required to execute these instructions is that needed to hold the source byte, the permutation map, and the result byte. Using the permutation instructions and byte swap instructions, a wide variety of permutation operations can be performed on a word, which in the example circuits is 32 bits.