Write-Execute Computation and Self-Spectre
Formalizes Gregory Morse's 2019 paper "Self-Spectre, Write-Execute and the Hidden State": the Write-Execute half unconditionally, the Self-Spectre half as conditional theorems over an abstract speculation contract. An ideal word-level machine whose only operations are a store and a jump, with no data reads, simulates finite Turing machines step for step, preserving halting, divergence and the tape; a finite image is exact until its guard faults. The development proves the jump-table lookup, the 8-bit tables, wide ADD, SUB, SHL, SHR, XOR, 32x32 multiplication, 64/32 division, two-step modular…
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