chi 8088 Series Quick Reference

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8088 Series Quick Reference

a data transfer instruction

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their memory and registers, register and transfer data between input and output ports.
1. General data transfer instructions.
MOV to send word or bytes.
MOVSX first sign extension, re-transmission.
MOVZX first zero-extended, re-transmission.
PUSH to put words in the stack.
POP the word pop up the stack.
PUSHA the AX, CX, DX, BX, SP, BP, SI, DI and then click onto the stack.
; POPA the DI, SI, BP, SP, BX, DX, CX, AX emulated by the pop-up stack.
PUSHAD the EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI array of the stack.
POPAD to EDI, ESI, EBP, ESP, EBX,discount jordans, EDX, ECX, EAX and then click the pop-up stack.
; BSWAP 32-bit registers in the byte barter the order of
XCHG ; exchange of words or bytes. (at fewest one operand register, segment register can not be used as operands)
CMPXCHG compare and exchange operation number. (the second operand must be the accumulator AL / AX / EAX)
XADD the first commute and then accumulate. (results in the first operand in)
XLAT words Day look-up table conversion.
─ ─ BX points to a the beginning point of the table 256 bytes, AL because the chart index amounts ​​(0-255, that
; 0-FFH); return to the results of AL as a look-up table. ([BX + AL] -> AL)
2. input output port to send commands.
IN I / O port input. (syntax: IN accumulator, port │ DX)
OUT I / O wharf output. (syntax: OUT port │ DX, accumulator)
input and output ports specified by the momentary mode, its range is 0-255; specified by the register DX,nike shoes air max,
its range is 0-65535.
3. destination address to sall overstructions.
LEA Load telling address.
cases: LEA DX, string; to offset deposit to the DX. ;
LDS transfer destination arrow, the pointer namely fraught into the DS.
Example: LDS SI, string; the segment address: offset address stored to DS: SI.
LES transfer destination pointer, the pointer is loaded into the ES.
Example: LES DI, string; the segment address: offset address cached to ES: DI.
LFS transfer destination pointer, the pointer is loaded into the FS.
Example: LFS DI, string; the segment address: offset address stored to FS: DI.
LGS transfer destination pointer, the pointer is loaded into the GS.
Example: LGS DI, string ;; the segment address: offset address stored to GS: DI.
LSS transfer destination pointer the contents of the pointer into the SS.
cases: LSS DI,jordan climate compel 1 键盘钢琴(有空进来弹弹琴,真的可以弹的), string; the segment address: Offset address saved to SS: DI.
4. signs to send commands.
; LAHF flag register transfer, to sign into the AH.
SAHF flag register transfer, the contents of the AH register into flags.
PUSHF mark stack.
POPF signs in the stack.
; PUSHD 32 bit flags onto the stack.
POPD 32 bit flags from the stack.
Second, arithmetic instruction
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ADD addition.
ADC Add with Carry.
INC ; plus 1.
AAA adding of the ASCII code adjustments.
DAA Decimal adapt.
SUB subtraction.
SBB Subtract with.
DEC minus 1.
; NEC inverted (with 0 less of).
CMP ; comparison. (for the subtraction of two operands, only the modified flag, do not send back the results).
AAS ; subtraction of the ASCII code adjustments.
DAS Decimal adjust. ;
MUL unsigned multiplication.
; IMUL integer multiplication.
these two,nike free sprint womens _2 in non- motor conveyance lane, the results echo AH and AL (byte operation), or DX, and AX (word operation),
AAM multiplication ASCII code adjustments.
DIV unsigned division.
IDIV integer division.
these 2, the results echo:
Business loopback AL, the remainder sent back to AH, (byte operation);
or commercial loopback AX,christian louboutin slingbacks, remainder loopback DX,nike airmax 95, (word operation) .
AAD department of the ASCII code corrections.
; CBW bytes into words. (the sign of bytes in the AL inflated to AH to go)
CWD word to double word. (the word in AX to DX in to sign extension)
; CWDE word to twice word. (the sign extension word in AX to EAX to work)
; CDQ double word expansion. (the word in EAX to EDX in to sign extension) ;
three logical instruction
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AND and computing.
OR OR.
XOR XOR.
NOT negated.
TEST test. (for the two operands and operations, only modify the flag, do not send back the results.) ;
SHL logical left shift.
; SAL arithmetic left. (= SHL)
SHR rational shift right.
SAR arithmetic shift right. (= SHR)
ROL rotate left.
; ROR turn right.
RCL loop through the carry left.
RCR Rotate Right via carry bit.
more than 8 shift instructions, the shift frequency of up to 255 times.
; shift the first time, instantly with the operation code. such as SHL AX, 1.
; shift> 1, the shift is given by the digit of enrol CL.
such as MOV CL, 04
; SHL AX, CL
four strings instruction
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DS: SI source string segment registers: the source string index.
ES: DI target string segment registers: the target string index.
CX recurrence counter.
; AL / AX scan values.
; D symbol 0 manner the action should automatically increment SI and DI; 1 namely should be automatic abatements.
Z flag is used to control the end of the scan or contrast operation.
; MOVS string to send.
; (MOVSB ​​transfer temperament. MOVSW send word. MOVSD transfer double word.)
CMPS string approximation.
(CMPSB compare characters. CMPSW comparison words.)
; SCAS string scanning.
of the AL or AX compare the content and the target string to compare the results reflected in the flag.
LODS into string. ;
factors in the source string (word or byte) in one by one into the AL or AX.
(LODSB transfer character. LODSW ; send word. LODSD transfer double word.)
STOS Save string.
the reverse process is LODS.
; REP if CX / ECX 0 be repeated.
REPE / REPZ When comparing the results of ZF = 1 or equivalent,ghd salon styler iv, and CX / ECX 0,ghd christmas 谨此献给“1980～1989”出生的人 (说好了，只能看, repeated.
REPNE / REPNZ if ZF = 0 or not equal comparison, and CX / ECX 0 be repeated.
REPC When CF = 1 and CX / ECX 0 be repeated.
REPNC When CF = 0 and CX / ECX 0 be repeated.
five program bough
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1> unconditional branch instruction (long transfer)
JMP unconditional transfer instruction
CALL procedure shriek
RET / RETF process of return.
2> conditional branch instruction (short transfer distance of -128 to +127)
; (if and merely if (SF XOR OF) = 1 时, OP1 loop control instruction (short shift)
LOOP ; CX is not naught while the loop.
LOOPE / LOOPZ ; CX is not zero and the flag Z = 1 when the loop.
LOOPNE / LOOPNZ CX is not zero and the character Z = 0 wheel.
JCXZ ; CX zero transfer.
JECXZ ECX zero transfer.
4> interrupt direction
INT flood disturb intervene instruction
INTO
IRET Interrupt Return
5> processor control instructions
HLT processors are suspended until the interrupt or reset signal ahead chronic.
TEST WAIT is tall when the piece lead when the CPU into a await state.
; ESC switch to the outer processor.
LOCK blocked the bus.
NOP op.
STC Set carry flag.
CLC clear carry flag.
CMC carry flag inverted. ;
STD Set direction flag.
CLD remove instruction flag.
STI Set interrupt enable bit.
CLI clear interrupt enable bit.
VI directive
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DW definition of the word (2 bytes).
PROC definition process.
ENDP end of the process.
SEGMENT definitions partition.
; ASSUME establishment of segment register addressing.
ENDS end segment.
END end of the process.