Assembly language programming(unit 4)

Assembly Language Programming Unit 4

Introduction ,[object Object],[object Object],[object Object]

Eg: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],Assembly Language Programming

Eg: ,[object Object],[object Object],[object Object],[object Object],[object Object]

Features of ALP ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

Comparison of Assembly language with High level languages ,[object Object],[object Object],[object Object]

[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

Advantages:- ,[object Object],[object Object],[object Object]

[object Object],Format of Assembly program LABEL OPCODE OPERAND COMMENTS

[object Object],LABEL OPCODE OPERAND COMMENTS Eg

8086 CPU ARCHITECTURE ,[object Object],[object Object],[object Object],[object Object],[object Object],16 –bit processor

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

Register Structure ,[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Flag Register Carry Flay- set carry out of MSB Parity Flag-set if res. has even Auxiliary carry for BCD Zero flag-set if res. is 0 Sign Flag=MSB of res TrapFlag Interrupt Enable Flag String Direction Flag Overflow Flag

Segment Registers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CS,SS, DS,ES

Extra Segment Stack Segment Data Segment Code Segment 00500 006FF 00700 007FF 00900 0098F 00990 00A00 0050 0070 0090 0099 Unused Area CS DS SS ES Memory Segmentation in 8086

Address Formation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Addressing Modes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],1.Register Addressing mode

2.Immediate Addressing mode ,[object Object],[object Object],[object Object]

3.Direct Addressing mode ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

4.Indirect Mode through Base Registers ,[object Object],[object Object],5.Indirect Mode through Index Registers ,[object Object],[object Object]

6.Indirect Mode through Sum of Base and Index Registers ,[object Object],[object Object],7.Relative mode through Base Register ,[object Object],[object Object]

8.Relative mode through Index Register ,[object Object],[object Object],9.Relative mode through Base and Index Register ,[object Object],[object Object]

10.Implied Addressing mode ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],8086 Instruction Set

1.Data-transfer Instructions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A. General purpose byte or word instructions

[object Object],[object Object],B. Simple I/O port transfer instructions

[object Object],[object Object],[object Object],C. Special Address transfer Instructions

[object Object],[object Object],[object Object],[object Object],D.Flag transfer instructions

2.Arithmetic Instructions ,[object Object],[object Object],[object Object],[object Object],[object Object],A. Addition Instructions

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],B. Subtraction Instructions

[object Object],[object Object],[object Object],C. Multiplication instructions

[object Object],[object Object],[object Object],[object Object],[object Object],D. Division Instructions

3. Bit Manipulation Instructions ,[object Object],[object Object],[object Object],[object Object],[object Object],A. Logical Instructions

[object Object],[object Object],[object Object],B. Shift Instructions

[object Object],[object Object],[object Object],[object Object],C. Rotate Instructions

4. String Instructions ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],4. Program Execution transfer instructions A. Unconditional transfer

[object Object],[object Object],[object Object],[object Object],B. Conditional transfer

[object Object],[object Object],[object Object],[object Object],C. Iteration control instructions

[object Object],[object Object],[object Object],D. Interrupt instructions

6.Processor Control Instructions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A. Flag set/clear Instructions

[object Object],[object Object],[object Object],[object Object],B. External Hardware synchronization instructions

[object Object],C. No operation instructions

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Minimum mode operation

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],Maximum mode operation

The pins that are available exclusively in the maximum mode are ,[object Object],[object Object],[object Object],[object Object]

INTEL 80386 –a 32 bit processor ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Control Unit Data Unit Protection Test Unit Segment Register Segment translators TLB Page translator decoder Instruction queue Prefetch queue prefetcher biu Decode unit Prefetch unit Page unit Execution unit Segment unit Internal architecture of 80386

Internal Architecture ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

80386 Addressing modes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Pseudo instructions (Assembler Directives) ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MASM : The Microsoft Macro Assembler ,[object Object],[object Object],[object Object]

MACROS ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Assembly language programming(unit 4)

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Assembly language programming(unit 4)