Z80 cp instruction

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Specific Z80 Instruction Examples . Z80 Instruction Description . (CP) instruction, which leaves the Accumulator unchanged. Instruction Flags Notes =========== ===== ===== ADD/ADC/SUB/SBC SZ5H3VNC CP r SZ*H*VNC CP is just SUB with the result thrown away F5 and F3 are copied from Zilog Z80 CPU Assembler Syntax Detailed info CP The DAA instruction adjusts this result so that correct BCD representation is obtained: 0011 1100 3C cp arg1 - Compares whatever is in the a register to arg1. Arg1 can be either a value, a register that points to an address, or another register. Modifies the Flag based jumps can follow any instruction that sets the flags, not just CP. TEST. Mnemonic, Addressing mode 1, Addressing mode 2, Status, C, N, PV Specific Z80 Instruction Examples . mal Adjust (DAA) instruction in the Z80 CPU allow arithmetic operations for processing. the following items:.These links will take you to tables that describe the Z80 instructions in detail. They are broken down into groups of similar instructions:.