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8051 Development Tools

8051 Development Tools. http://bit.kuas.edu.tw/~8051 Assembler / Simulator / C Compiler. Tools Used in This Course. EDITOR PROGRAM. WORD. myfile.a51. ASSEMBLER PROGRAM. ASEM.EXE. myfile.lst. myfile.hex. Simulator. TS Controls Emulator 8051 1.00. Download Tools.

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8051 Development Tools

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  1. 8051 Development Tools http://bit.kuas.edu.tw/~8051 Assembler / Simulator / C Compiler

  2. Tools Used in This Course EDITOR PROGRAM WORD myfile.a51 ASSEMBLER PROGRAM ASEM.EXE myfile.lst myfile.hex Simulator TS ControlsEmulator 8051 1.00

  3. Download Tools • Please go to the web site http://bit.kuas.edu.tw/~8051 and download the files with underlines. Assembler • Download ASEM-51 v1.3 and unzip it into a sub-directory. Simulator • Emulator 8051 V1.0 by TS Controls is a software simulator for 8051.

  4. Assembler • ASEM-51, by W.W. Heinz, is a free 8051 macro assembler for MS-DOS, Windows and Linux. • It is a two-pass macro assembler for the Intel MCS-51 family of microcontrollers. • Issue "ASEM PROG2-1.A51" within DOS box will process the source file "PROG2-1.A51" and generate a output file "PROG2-1.HEX" in Intel-HEX format and a list file "PROG2-1.LST" in plain text. • Refer to "ASEM_51.DOC" for detail usage. The example program "DEMO.A51" is very instructive.

  5. Demo C:\Documents and Settings\pcs3412>cd .. C:\Documents and Settings>cd .. C:\>cd 8051asm C:\8051asm>ASEM PROG2-1.A51 no errors C:\8051asm>dir 2002/12/31 上午01:30 81,920 ASEMW.EXE : 2008/09/29 上午 11:40 50 PROG2-1.hex 2008/09/29 上午 11:40 3,460 PROG2-1.lst C:\8051asm>

  6. PROG2-1.A51 ORG 0H ;start (origin) at location 0 MOV R5,#25H ;load 25H into R5 MOV R7,#34H ;load 34H into R7 MOV A,#0 ;load 0 into A ADD A,R5 ;add contents of R5 to A ;now A = A + R5 ADD A,R7 ;add contents of R7 to A ;now A = A + R7 ADD A,#12H ;add to A value 12H ;now A = A + 12H HERE:SJMP HERE ;stay in this loop END ;end of asm source file

  7. Part of PROG2-1.LST Line I Addr Code Source 1: N 0000 ORG 0H ;start (origin) at location 0 2: 0000 7D 25 MOV R5,#25H ;load 25H into R5 3: 0002 7F 34 MOV R7,#34H ;load 34H into R7 4: 0004 74 00 MOV A,#0 ;load 0 into A 5: 0006 2D ADD A,R5 ;add contents of R5 to A 6: ;now A = A + R5 7: 0007 2F ADD A,R7 ;add contents of R7 to A 8: ;now A = A + R7 9: 0008 24 12 ADD A,#12H ;add to A value 12H 10: ;now A = A + 12H 11: 000A 80 FE HERE:SJMP HERE ;stay in this loop 12: END ;end of asm source file

  8. PROG2-1.HEX :0C0000007D257F3474002D2F241280FE1B :00000001FF

  9. Simulator • Emulator 8051 V1.0 by TS Controls is a software simulator for 8051. • Execute Tsce0100.exe • Load PROG2-1.HEX and execute it

  10. Load PROG2-1.HEX

  11. Registers

  12. Program List

  13. Step by Step Execution

  14. Internal RAM ORG 0H ;start (origin) at location 0 MOV R5,#25H ;load 25H into R5 MOV R7,#34H ;load 34H into R7 MOV A,#0 ;load 0 into A ADD A,R5 ;add contents of R5 to A ;now A = A + R5 ADD A,R7 ;add contents of R7 to A ;now A = A + R7 ADD A,#12H ;add to A value 12H ;now A = A + 12H HERE:SJMP HERE ;stay in this loop END ;end of asm source file

  15. Stop The Program

  16. C Compiler • Small Device C Compiler • SDCC - Small Device C Compiler is a free C compiler for 8051, although library is incomplete. • Download sdcc-2.3.0-i586-mingw32msvc.zip and unzip it to "c:\" with directory structure preserved. • Add "c:\sdcc\bin" to DOS search path. • Issue "sdcc --code-loc 0x4000 --xram-loc 0x8000 Ex7-1.c" within DOS box will generate “Ex7-1.ihx" in Intel-HEX format, • "--code-loc 0x4000" is used to specify starting code address. • "--xram-loc 0x8000" is used to specify starting address of external data memory. • Refer to "c:\sdcc\share\doc\sdcc\sdccman.pdf" for SDCC Compiler User Guide.

  17. Ex7-1.c #include <8051.h> void main(void) { unsigned char z; for (z=0; z<=255; z++) P1=z; }

  18. Compiler Ex7-1.c

  19. Ex7-1.ihx :0440000002405032F8 :01400B003282 :01401300327A :01401B003272 :01402300326A :01402B003262 :0D40500075810712404CE582600302403389 :03405D00024033EB :0540330012403880FE80 :024038007A000C :0C403A008A037C00C374FF9BE49C4005DB :054046008A900A80EFE2 :01404B002252 :03404C007582007A :01404F00224E :00000001FF

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