C51ASM - User guide.pdf - Atmel - phill2k

C51ASM

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User Guide

3710A–MICRO–10/10

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C51ASM User Guide

3710A–MICRO–10/10

Table of Contents

Section 1

Introduction................................................................................................................. 1-1

1.1 References......................................................................................................................... 1-1

Section 2

Running the Assembler .............................................................................................. 2-1

2.1 Installation.......................................................................................................................... 2-1

2.1.1 Installation under Microsoft Windows .................................................................. 2-1

2.1.2 Installation under Linux........................................................................................ 2-6

2.2 Environment....................................................................................................................... 2-7

2.2.1 Microsoft Windows Environment ......................................................................... 2-7

2.2.2 Linux Environment ............................................................................................... 2-7

2.3 Command Line Operation.................................................................................................. 2-8

2.3.1 Output Files ......................................................................................................... 2-9

2.3.2 Command Line Options ..................................................................................... 2-10

2.4 Batch File Operation ........................................................................................................ 2-19

2.4.1 Drag–and–Drop ................................................................................................. 2-19

2.4.2 Send To Menu ................................................................................................... 2-19

Section 3

C51ASM Assembly Language ................................................................................... 3-1

3.1 Statements......................................................................................................................... 3-1

3.2 Comments.......................................................................................................................... 3-1

3.3 Symbols ............................................................................................................................. 3-2

3.3.1 Labels .................................................................................................................. 3-2

3.3.2 Predefined Symbols............................................................................................. 3-3

3.4 Constants........................................................................................................................... 3-4

3.5 Expressions ....................................................................................................................... 3-6

3.6 Segment Type.................................................................................................................... 3-7

3.7 The 8051 Instruction Set.................................................................................................... 3-9

3.8 Assembler Directives ....................................................................................................... 3-10

3.9 Assembler Controls.......................................................................................................... 3-12

3.10 Conditional Assembly ...................................................................................................... 3-14

Section 4

Macro Processing....................................................................................................... 4-1

4.1 Standard Callable Macros.................................................................................................. 4-1

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Table of Contents (Continued)

4.1.1 Defining Macros................................................................................................... 4-1

4.1.2 Calling Macros ..................................................................................................... 4-2

4.1.3 Macro Parameters ............................................................................................... 4-3

4.1.4 Local Symbols ..................................................................................................... 4-4

4.1.5 Macro Operators.................................................................................................. 4-5

4.1.6 Exiting Macro Expansion ..................................................................................... 4-8

4.2 Repeat Macros................................................................................................................... 4-8

4.3 Nested and Recursive Macro Calls.................................................................................... 4-9

4.4 Nested Macro Definitions................................................................................................. 4-10

Section 5

Assembler Directives.................................................................................................. 5-1

5.1 DB ...................................................................................................................................... 5-3

5.2 DW ..................................................................................................................................... 5-3

5.3 DS ...................................................................................................................................... 5-4

5.4 DBIT................................................................................................................................... 5-4

5.5 DEFINE.............................................................................................................................. 5-5

5.6 NAME................................................................................................................................. 5-5

5.7 ORG................................................................................................................................... 5-6

5.8 USING................................................................................................................................ 5-6

5.9 END ................................................................................................................................... 5-7

5.10 EQU ................................................................................................................................... 5-7

5.11 CODE................................................................................................................................. 5-8

5.12 DATA ................................................................................................................................. 5-8

5.13 SFR.................................................................................................................................... 5-9

5.14 BIT ..................................................................................................................................... 5-9

5.15 IDATA .............................................................................................................................. 5-10

5.16 EDATA ............................................................................................................................. 5-10

5.17 FDATA ............................................................................................................................. 5-11

5.18 XDATA ............................................................................................................................. 5-11

5.19 CSEG............................................................................................................................... 5-12

5.20 DSEG............................................................................................................................... 5-12

5.21 ISEG ................................................................................................................................ 5-13

5.22 ESEG ............................................................................................................................... 5-13

5.23 FSEG ............................................................................................................................... 5-14

5.24 BSEG ............................................................................................................................... 5-15

5.25 XSEG ............................................................................................................................... 5-15

5.26 SET .................................................................................................................................. 5-16

5.27 #UNDEF........................................................................................................................... 5-17

5.28 IF...................................................................................................................................... 5-17

5.29 IFN ................................................................................................................................... 5-18

C51ASM User Guide

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Table of Contents (Continued)

5.30 IFDEF............................................................................................................................... 5-18

5.31 IFNDEF ............................................................................................................................ 5-19

5.32 IFB ................................................................................................................................... 5-19

5.33 IFNB................................................................................................................................. 5-20

5.34 #IF.................................................................................................................................... 5-21

5.35 #IFDEF............................................................................................................................. 5-22

5.36 #IFNDEF .......................................................................................................................... 5-22

5.37 .IF..................................................................................................................................... 5-23

5.38 ELSEIF............................................................................................................................. 5-23

5.39 ELSEIFN .......................................................................................................................... 5-24

5.40 ELSEIFDEF ..................................................................................................................... 5-25

5.41 ELSEIFNDEF................................................................................................................... 5-25

5.42 ELSEIFB .......................................................................................................................... 5-25

5.43 ELSEIFNB........................................................................................................................ 5-26

5.44 #ELIF ............................................................................................................................... 5-27

5.45 ELSE................................................................................................................................ 5-28

5.46 #ELSE.............................................................................................................................. 5-28

5.47 .ELSE............................................................................................................................... 5-29

5.48 ENDIF .............................................................................................................................. 5-29

5.49 #ENDIF ............................................................................................................................ 5-30

5.50 .ENDIF ............................................................................................................................. 5-30

5.51 MACRO............................................................................................................................ 5-31

5.52 LOCAL ............................................................................................................................. 5-32

5.53 ENDM .............................................................................................................................. 5-32

5.54 EXITM .............................................................................................................................. 5-33

5.55 REPT ............................................................................................................................... 5-33

Section 6

Assembler Controls .................................................................................................... 6-1

6.1 $DATE ............................................................................................................................... 6-2

6.2 $DEBUG ............................................................................................................................ 6-3

6.3 $NODEBUG....................................................................................................................... 6-3

6.4 $DEVICE............................................................................................................................ 6-4

6.5 $INCDIR............................................................................................................................. 6-4

6.6 $MACRO............................................................................................................................ 6-5

6.7 $NOMACRO ...................................................................................................................... 6-5

6.8 $MAPFSEG ....................................................................................................................... 6-6

6.9 $MOD51............................................................................................................................. 6-6

6.10 $MOD52............................................................................................................................. 6-7

6.11 $NOMOD51 ....................................................................................................................... 6-7

6.12 $OBJECT........................................................................................................................... 6-8

6.13 $NOOBJECT ..................................................................................................................... 6-8

C51ASM User Guide

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3710A–MICROC–10/10

C51ASM - User guide.pdf

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