US EditionCan We Replace A Program Counter With A Linear-Feedback Shift Register? Yes We Can!
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Can We Replace A Program Counter With A Linear-Feedback Shift Register? Yes We Can!
Today we heard from [Richard James Howe] about his new CPU. This new 16-bit CPU is implemented in VHDL for an FPGA. The really cool thing about this CPU is that it eschews the typical program counter (PC) and replaces it with a linear-feedback shift register (LFSR). Apparently an LFSR can be implemented in hardware with fewer transistors than are required by an adder. Usually the program counter in your CPU increments by one, each time indicatin…
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