BTFSC error (PIC Assembly)

[picforall007]

#include<p16c74a.inc>

data1 equ 50h
data2 equ 51h
result equ 60h
rem equ 61h

;main prog
clrf result
movfw data1
l1:
	subwf data2,1
	btfsc STATUS,0
	incf result
	btfsc STATUS,0
	goto l1
	addwf data2,1
	end

I don't know why 'BTFSC' act as "bit test flag skip if carry" instead of "bit test flag skip if clear"...

Please help me...

 

[cdh7]

Hi,

The BTFSC instruction works fine (skip if clear). You're testing if the carry flag (STATUS register bit 0) is set or clear so that the overall effect is to skip an instruction if carry is clear.

Regards,
Chris