"We present the 5500FP, a 24-trit balanced ternary RISC processor implemented on FPGA, with a 120-instruction ISA, native atomic synchronization primitives, and an open hardware development board. The design demonstrates the practical feasibility of balanced ternary computing on modern reconfigurable hardware, providing a concrete platform for research into non-binary architectures without the barrier of custom silicon development."
"There's no inherent reason computers have to encode everything in binary. The natural world is more subtle than just "on" or "off". Another way of encoding logic that's quite well-suited to digital electronics is ternary logic. This encodes numbers in trits instead of bits. A trit can hold one of three values, rather than the two represented by "on" or "off". A common version is balanced ternary, in which one trit can hold one, zero, or minus 1."
"There is a long historical precedent for ternary computer logic. The great Donald Knuth is a fan; in volume 2 of The Art of Computer Programming, he called it "perhaps the prettiest number system.""
The 5500FP represents a ternary CPU implemented on FPGA that enables experimentation with non-binary computing systems. Balanced ternary logic encodes information using trits—values of 1, 0, or -1—rather than binary bits. This approach offers advantages over binary encoding and has historical precedent among computer scientists, including Donald Knuth who called balanced ternary "perhaps the prettiest number system." The processor features a 120-instruction ISA, native atomic synchronization primitives, and an open hardware development board. By implementing ternary computing on conventional binary FPGAs, researchers can explore alternative architectures without requiring custom silicon development.
#ternary-computing #fpga-implementation #non-binary-architecture #balanced-ternary-logic #alternative-computing-systems
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