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Alex Guest
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arrays in two banks pic18 |
Posted: Fri May 29, 2009 5:38 am |
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i have 2 arrays 120 bytes each
i was having difficulties while thrying to copy array1 to array2
when i've looked in .sym file i've found that compiler puts first array in bank0 at 057-0CE and second at 0CF-146 - in bank0 and bank1
and the code that generated does not switches banks
Code: |
.................... void arrays()
.................... {
.................... int8 j;
.................... for (j=0; j<120; j++)
*
053C: MOVLB 1
053E: CLRF xE9
0540: MOVF xE9,W
0542: SUBLW 77
0544: BNC 0590
.................... {
.................... array2[j] = array1[j];
0546: CLRF 03
0548: MOVF xE9,W
054A: ADDLW CF
054C: MOVWF 01
054E: MOVLW 00
0550: ADDWFC 03,F
0552: MOVFF 03,1EB
0556: CLRF 03
0558: MOVF xE9,W
055A: ADDLW 57
055C: MOVWF FE9
055E: MOVLW 00
0560: ADDWFC 03,W
0562: MOVWF FEA
0564: MOVFF FEF,1EC
0568: MOVFF 1EB,FEA
056C: MOVFF 01,FE9
0570: MOVFF 1EC,FEF
.................... if (array2[j]==0x31)
0574: CLRF 03
0576: MOVF xE9,W
0578: ADDLW CF
057A: MOVWF FE9
057C: MOVLW 00
057E: ADDWFC 03,W
0580: MOVWF FEA
0582: MOVF FEF,W
0584: SUBLW 31
0586: BNZ 058C
.................... output_toggle(pin_c1);
0588: BCF F94.1
058A: BTG F8B.1
.................... }
058C: INCF xE9,F
058E: BRA 0540
.................... }
0590: MOVLB 0
0592: GOTO 059A (RETURN)
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did any one encountered this before?
i'm using pic18f45k20
compiler version 4.074
Alex. |
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Ttelmah Guest
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Posted: Fri May 29, 2009 7:10 am |
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It doesn't have to bank switch.
It is using the indirect addressing registers.
Presumably you are aware, if you just want to copy the array contents, that a memcpy, will do this more efficiently...
What you show is legitimate. If it doesn't work, look elsewhere.
Best Wishes |
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