Paper Tape

A better RAM-less computer.

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Even RISC is too heavy. I will not advocate the practical use of OISC, but a subset of RISC which I will call BISC, for bitwise instruction set computer. Bitwise XOR, NOT, AND, OR, shift left and shift right. Comparison, branching. That is everything. This subset can emulate higher level commands. For example, there would not be a true ALU. Addition requires XOR (sum), AND (carry), left shift the carry, repeat until the AND term equals zero. Pretty minimal, but still easy enough to program.

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