NOTE: The following is helpful guide and is NOT part of the puzzle.
The first digits are decimal (as presented in the puzzle); 0x and 0y are representation of hex values
24: CLC - clear carry flag
30,0x,0y: ASL $0y0x,X - bitwise shift memory location ($0y0x + .X) left;
put the left most bit into the carry flag
32,210,255: JSR $FFD2 - output the character whose value is in register A
96: RTS - equivalent of end
121,0x,0y: ADC $0y0x,Y - add with carry the value of memory location
($0y0x + .Y) to register A
144,0x: BCC (offset) - branch #$0x signed bytes from the end of this
instruction if the carry is clear (ie. carry == 0)
152: TYA - copy the value of register Y to register A
153,0x,0y: STA $0y0x,Y - store register A in memeory location ($0y0x + .Y)
160,0x: LDY #$0x - load register Y with the value #$0x
162,0x: LDX #$0x - load register X with the value #$0x
169,0x: LDA #$0x - load register A with the value #$0x
185,0x,0y: LDA $0y0x,Y - load register A with the value of memory location ($0y0x + .Y)
192,0x: CPY #$0x - compare the value of register Y with #$0x
200: INY - increase register Y by 1
208,0x: BNE (offset) - if last compare is not equal, branch #$0x signed
bytes from the end of this instruction
224,0x: CPX #$0x - compare the value of register X with #$0x
232: INX - increase register X by 1