From Andrew Warren
; This routine delays X cycles. Enter with X (in the range ; [20-271]) in the W register. ; ; Note that the delay is inclusive of the "MOVLW X", "CALL ; DELAY", and "RETURN" overhead, so a sequence like: ; ; MOVLW 100 ; CALL DELAY ; MOVLW 200 ; CALL DELAY ; ; will delay EXACTLY 300 cycles. DELAY: MOVWF COUNTER BTFSC COUNTER, 0 GOTO $+1 BTFSS COUNTER, 1 GOTO SKIP NOP GOTO $+1 SKIP: RRF COUNTER RRF COUNTER MOVLW 4 SUBWF COUNTER BCF COUNTER,6 BCF COUNTER,7 LOOP: NOP DECFSZ COUNTER GOTO LOOP RETURN
|file: /Techref/microchip/delay/8b1cr20m-aw.htm, 1KB, , updated: 2003/10/15 10:57, local time: 2018/5/26 20:07,
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<A HREF="http://techref.massmind.org/techref/microchip/delay/8b1cr20m-aw.htm"> PIC Microcontoller Delay Method - Delay X cycles (20-271) inclusive </A>
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