10  *= $600
20  LDA #$2C
30  STA $CB
40  LDA #$30
50  STA $CC
60  LDX #5
70  STX $CD
80  LDY #0
90 L1 LDA ($CB),Y
0100  EOR $CD
0110  CLC
0120  ADC $CD
0130  STA ($CB),Y
0140  DEC $CD
0150  DEC $CD
0160  DEC $CD
0170  INY
0180  BNE L1
0190  INC $CC
0200  DEX
0210  BNE L1
0220  BRK
