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S3C9442/C9444/F9444/C9452/C9454/F9454 SAM88RCRI INSTRUCTION SET POP — Pop From Stack POP dst Operation: dst . @SP SP . SP + 1 The contents of the location addressed by the stack pointer are loaded into the destination. The stack pointer is then incremented by one. Flags: No flags affected. Format: Bytes Cycles Opcode Addr Mode (Hex) dst opc dst 2 8 50 R 8 51 IR Examples: Given: Register 00H = 01H, register 01H = 1BH, SP (0D9H) = 0BBH, and stack register 0BBH = 55H: POP 00H . Register 00H = 55H, SP = 0BCH POP @00H . Register 00H = 01H, register 01H = 55H, SP = 0BCH In the first example, general register 00H contains the value 01H. The statement "POP 00H" loads the contents of location 0BBH (55H) into destination register 00H and then increments the stack pointer by one. Register 00H then contains the value 55H and the SP points to location 0BCH. SAM88RCRI INSTRUCTION SET S3C9442/C9444/F9444/C9452/C9454/F9454 PUSH — Push To Stack PUSH src Operation: SP . SP – 1 @SP . src A PUSH instruction decrements the stack pointer value and loads the contents of the source (src) into the location addressed by the decremented stack pointer. The operation then adds the new value to the top of the stack. Flags: No flags are affected. Format: Bytes Cycles Opcode Addr Mode (Hex) dst opc src 2 8 70 R 8 71 IR Examples: Given: Register 40H = 4FH, register 4FH = 0AAH, SP = 0C0H: PUSH 40H fi Register 40H = 4FH 更多：https://www.bmcx.com/ , stack register 0BFH = 4FH, SP = 0BFH PUSH @40H fi Register 40H = 4FH, register 4FH = 0AAH, stack register 0BFH = 0AAH, SP = 0BFH In the first example, if the stack pointer contains the value 0C0H, and general register 40H the value 4FH, the statement "PUSH 40H" decrements the stack pointer from 0C0 to 0BFH. It then loads the contents of register 40H into location 0BFH. Register 0BFH then contains the value 4FH and SP points to location 0BFH. S3C9442/C9444/F9444/C9452/C9454/F9454 SAM88RCRI INSTRUCTION SET RCF — Reset Carry Flag RCF RCF Operation: C . 0 The carry flag is cleared to logic zero, regardless of its previous value. Flags: C: Cleared to "0". No other flags are affected. Format: Bytes Cycles Opcode (Hex) opc 1 4 CF Example: Given: C = "1" or "0": The instruction RCF clears the carry flag (C) to logic zero.