State Tensor X ∈ {-1, +1}155×1024
Instruction word (30 bits across 3 fields, MSB-first bipolar):
Rows 0-9: addr_a, opcode when 0-15 or memory address when ≥16 for SUBLEQ
Rows 10-19: addr_b, destination or test operand
Rows 20-29: addr_c, source operand or branch target

Program counter (10-bit, rows 84-93, column 0 only):
PC starts at column 96 (= s+m = 32+64). Each forward pass: fetch at PC, execute, update PC. Position encoding rows 94-103 give each column a unique identity for attention addressing.