Mercurial > public > mk2
diff code_part1/OSTC_code_asm_part1/math.asm @ 74:a1ccb92b59cd
1.72beta release
| author | heinrichsweikamp |
|---|---|
| date | Mon, 15 Nov 2010 15:19:24 +0100 |
| parents | 96a35aeda5f2 |
| children | eff0da5cb975 |
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--- a/code_part1/OSTC_code_asm_part1/math.asm Sun Nov 14 20:45:39 2010 +0100 +++ b/code_part1/OSTC_code_asm_part1/math.asm Mon Nov 15 15:19:24 2010 +0100 @@ -67,13 +67,13 @@ sub16: ; sub_c = sub_a - sub_b bcf neg_flag - movf sub_b+0, w ; Get Value to be subtracted - subwf sub_a+0, w ; Do the High Byte - movwf sub_c+0 - movf sub_b+1, w ; Get the Value to be Subbed - subwfb sub_a+1, w - movwf sub_c+1 - btfss STATUS,N + movf sub_b+0, W ; Get Value to be subtracted + subwf sub_a+0, W ; Do the High Byte + movwf sub_c+0 + movf sub_b+1, W ; Get the Value to be Subbed + subwfb sub_a+1, W + movwf sub_c+1 + btfsc STATUS,C return ; result positve ; sub_c = sub_a - sub_b bsf neg_flag ; result negative @@ -81,11 +81,11 @@ movff sub_c+1,sub_b+1 setf sub_a setf sub_a+1 - movf sub_b+0, w ; Get Value to be subtracted - subwf sub_a+0, w ; Do the High Byte - movwf sub_c+0 - movf sub_b+1, w ; Get the Value to be Subbed - subwfb sub_a+1, w + movf sub_b+0, W ; Get Value to be subtracted + subwf sub_a+0, W ; Do the High Byte + movwf sub_c+0 + movf sub_b+1, W ; Get the Value to be Subbed + subwfb sub_a+1, W movwf sub_c+1 return @@ -272,7 +272,7 @@ movf isr_sub_b+1, w ; Get the Value to be Subbed subwfb isr_sub_a+1, w movwf isr_sub_c+1 - btfss STATUS,N + btfsc STATUS,C return ; result positve ; sub_c = sub_a - sub_b bsf neg_flag_isr ; result negative