ALU Logic

Opcodes

Opcode	Action	Flags	Description
`NOP`	PC ++		No operation and will increase the PC counter by 2
`AND Rx,#`	Rx <= Rx & Imm	Z	Rx is ANDed with an Immediate 16 or 32 bit value and the result is placed back into Rx. The Z flag is set if the result is zero.
`OR Rx,#`	Rx <= Rx \| Imm	Z	Rx is ORed with an Immediate 16 or 32 bit value and then result placed back into Rx. The Z flag is set if the result is zero.
`XOR Rx,#`	Rx <= Rx ^ Imm	Z	Rx is XORed with an Immediate 16 or 32 bit value and then result placed back into Rx. The Z flag is set if the result is zero.
`BIT Rx,#`	Z <= Rx & Imm	Z	Rx is ANDed with an immediate 16 or 32 bit value, but the result is not written back. This allows testing bits in a register without changing the register's value. The Z flag is set if the result is zero.
`AND Rx,Ry`	Rx <= Rx & Ry	Z	Rx is ANDed with Ry and the result placed back into Rx. The Z flag is set if the result is zero
`OR Rx,Ry`	Rx <= Rx \| Ry	Z	Rx is ORed with Ry and the result is placed back into Rx. The Z flag is set if the result is zero
`XOR Rx,Ry`	Rx <= Rx ^ Ry	Z	Rx is XORed with Ry and the result is placed back into Rx. The Z flag is set if the result is zero.
`BIT Rx,Ry`	Z <= Rx & Imm	Z	Rx is ANDed with Ry but the result is not written back. The Z flag is set if the result is zero.
`CRC Rx,Ry,Rz,#n`	CRC Rx,Ry,Rz,#n		CRC16's data in RAM at Rx for length Ry using Rz for the CRC accumulator, and polynomial N.