Opcode Format Mnemonic Description
111DVVVV SETAB The SETAB mnemonic is used to set the A or B ALU input register to the specified 4-bit immediate value.


Bits Description
D Destination Register.

  • 0: ALU Input Register A
  • 1: ALU Input Register B
VVVV The 4-bit long immediate value.

The following animation shows how the SETAB opcode is executed physically on the CPU.

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