8080 汇编（国外英文资料）.doc

8080 汇编（国外英文资料） (long transfer) JMP transfer instructions unconditionally CALL procedure CALL RET/RETF process returns. 2 conditional transfer instructions (short transitions, -128 to + 127) When and only if (SF XOR OF) = 1, OP1 OP2) JA/JNBE is not less than or not equal to. JAE/JNB is greater than or equal to the transfer. JB/JNAE is less than the transfer. JBE/JNA is less than or equal to the transfer. All four, test the results of unsigned integer arithmetic (mark C and Z). JG/JNLE is greater than the transfer. JGE/JNL is greater than or equal to the transfer. JL/JNGE is less than the transfer. JLE/JNG is less than or equal to the transfer. All four, test the result of the integer operation of the sign (S, O and Z). JE/JZ is the transfer. JNE/JNZ does not equal time transfer. JC is moved when it is in. The JNC is moved without a carry. The JNO does not overflow. The JNP/JPO parity is shifted when the odd is odd. The JNS symbol is moved when 0. JO overflow. The JP/JPE parity is transferred when the evenness is even. The JS symbol is moved when 1. 3 loop control instruction (short shift) LOOP CX is not a zero cycle. LOOPE/LOOPZ CX is not a zero and the Z = 1 cycle. The LOOPNE/LOOPNZ CX is not zero and the Z = 0 cycle. PUSH and POP Function: press the operands into or out of the stack Syntax: PUSH operands POP operands PUSH r PUSH M PUSH data POP M PUSHF POPF, PUSHA POPA Function: stack instruction group Format: PUSHF POPF PUSHA POPA LEA, typical vmlinux.lds, LES Function: take the address to register Grammar: LEA r, m LDS r, m LES r, m XLAT (XLATB) Function: check list instructions Syntax: XLAT XLAT m Arithmetic instruction ADD, ADC Function: addition instructions Syntax: ADD OP1, OP2 ADC OP1, OP2 Format: ADD r1, r2 ADD r, m ADD m, r ADD r, data Effect: C, P, A, Z, S, O SUB, SBB Function: subtraction instruction Syntax: SUB OP1, OP2 SBB OP1, OP2 Format: SUB r1, r2 SUB r, m SUB m, r SUB r, data SUB m, data Effect: C, P, A, Z, S, O INC and DEC Function: add or sub