TP LNH ASM CHO PIC

Tp lnh ASM ca pic 16 f877a y b

1. Lnh ADDLF

c php ADDWF f (0

BTFSS f,b

(0f127, 0b7)

chc nng: kim tra bt b trong thanh ghi f

nu bt b = 1 lnh tip theo c thc thi

nu bt b =0 lnh tip theo c b qua v thay vo l lnh NOP

bt trng thi : khng c

9. Lnh CALL

c php CALL k (0k2047)

tc dng: gi 1 chng trnh con

bt trng thi : khng c

10. Lnh CLRF

c php: CLRF f (0f127)

chc nng: xa thanh ghi f, bt Z s c set

bt trng thi:Z

11. Lnh CLRW

c php: CLRW

chc nng : xa thanh ghi W, bt Z c set

bt trng thi:Z

12. Lnh CLRWDT

c php: CLRWDT

chc nng: khi to li nh thi watchdog, cc bt /PD,/TO c set ln 1

bt trng thi:/PD,/TO

13. Lnh COMF

c php: COMF f,d

(0f127, d[0,1]).

chc nng: o cc bt trong thanh ghi f, kt qu lu vo W nu d=0, v lu

vao f nu d=1

bt trng thi:Z

14. Lnh DECF

c php: DECF f,d

(0f127, d[0,1]).

chc nng: gim gi tr thanh ghi f i 1 n vi, kt qu lu W nu d=0, lu

f nu d=1

bt trng thi: Z

15. Lnh DECFSZ

c php: : DECFSZ f,d

(0f127, d[0,1])

chc nng: gim thanh ghi f i 1 n v

-nu kt qu sau khi gim khc 0 lnh tip theo c thc thi

-nu kt qu sau khi gim = 0 lnh tip theo c b qua v thay bng lnh

NOP

kt qu c lu vo W nu d=0, c lu f nu d =1

bt trng thi :khng c

16. Lnh GOTO

c php: GOTO k

(0k2047)

chc nng: nhy n nhn k

17. Lnh INCF

c php: INCF f,d

(0f127, d [0,1])

chc nng: tng gi tr thanh ghi f ln 1 n vi

lu kt qu: ging nh cc lnh trn

bt trng thi:Z

18.lnh INCFSZ

c php INCFSZ f,d

(0f127, d[0,1])

chc nng: tng thanh ghi f ln 1 n v

-nu kt qu sau khi gim khc 0 lnh tip theo c thc thi

-nu kt qu sau khi gim = 0 lnh tip theo c b qua v thay bng lnh

NOP

kt qu c lu vo W nu d=0, c lu f nu d =1

bt trng thi :khng c

chc nng:

19. Lnh IORLW

c php: IORLW k (0k255)

chc nng: thc hin php ton OR gia thanh ghi W v gi tr K, kt qu

lu vo W

bt trng thi Z

20. Lnh IORWF

c php: IORWF f,d

(0f127, d[0,1])

chc nng: thc hin php ton OR gia thanh ghi W v thanh ghi f, kt qu

c lu vo W nu d=0, c lu f nu d =1

bt trng thi Z

21. Lnh RLF

c php: RLF f,d

(0f127, d[0,1])

chc nng: dch tri thanh ghi f qua c nh,kt qu c lu vo W nu

d=0, c lu f nu d =1

bt trng thi C

22. Lnh RRF

c php: RRF f,d

(0f127, d[0,1])

chc nng: dch phi thanh ghi f qua c nh,kt qu c lu vo W nu

d=0, c lu f nu d =1

bt trng thi C

23. Lnh RETURN

c php: RETURN

chc nng: tr v chng trnh chnh t mt chng trnh con

bt trng thi :khng c

24. Lnh SLEEP

c php: SLEEP

chc nng: a vi iu khin v ch sleep, WDT b xa v 0, cc bt /PD

=0, /TO =1, oscilator khng c php hot ng

bt trng thi :/PD v /TO

24. Lnh SUBLW

c php: SUBLW k

chc nng: ly gi tr k tr cho gi tr trong W, kt qu lu vo W

bt trng thi :C,DC,Z

25. Lnh SUBWF

c php: SUBWF f,d

(0f127, d[0,1])

chc nng: ly gi tr trong thanh ghi f tr cho gi tr trong W,kt qu c

lu vo W nu d=0, c lu f nu d =1

bt trng thi :C,DC,Z

26. Lnh SWAP

c php: SWAP f,d

(0f127, d[0,1])

chc nng: o 4 bt thp v 4 bt cao ca thanh ghi f cho nhau, kt qu

c lu vo W nu d=0, c lu f nu d =1

bt trng thi :khng c

27. Lnh XORLW

c php: XORLW k (0k255)

chc nng: thc hin php ton XOR gia thanh ghi W v gi tr K, kt qu

lu vo W

bt trng thi Z

28. Lnh XORWF

c php: XORWF f,d (0k127)

chc nng: thc hin php ton XOR gia thanh ghi W gi tr trong thanh

ghi f , kt qu c lu vo W nu d=0, c lu f nu d =1

bt trng thi :Z

29. Lnh #DIFINE

c php : #DEFINE

chc nng: thay th bng

thc ra y khng phi l lnh, ch l quy c cho trnh bin dch

30. Lnh INCLUDE

c php: #INCLUDE hoac #INCLUDE filename

chc nng: nh km mt file khc vo chng trnh.

31. Lnh CONSTANT

c php : CONSTANT =

tc dng: khai bo mt hng s, c ngha l khi gp trong code th

trnh bin dch s t ng thay bng

32. Lnh VARIABLE

c php: VARIABLE =