ParseString:
 ld hl,Picture          ;the memory address at the start of our thingy
 ld bc,1200             ;the number of bytes we are going to read
 ld de,0                ;we can do a 16-bit compare
ParseStringLoop:        ;the loop body
 ld a,(hl)              ;put the byte currently being tested in accumulator for testing
 cp 97                  ;is it the ASCII value for 'a'?
 call z, aDetected      ;if it is, call this routine here
 cp 98                  ;is it the ASCII value for 'b'?
 call z, bDetected      ;if it is, call this routine here
 inc hl                 ;we're done with the current byte so we go to the next
 dec bc                 ;since we're done with the byte, we decrement the counter
 ld a,b                 ;we are going to use a for a 16-bit compare, we can use a because we are done with the previous byte
 or c                   ;a contains the bits in b. We now add the bits in c to the bits in a. if bc is 0, they will all remain 0. else, not zero
 cp 0                   ;are they all zero? if so, bc is 0
 jp nz, ParseStringLoop ;if bc is not zero, then we are not done reading/processing bytes, and we go back to the loop body
 ret                    ;otherwise, we are done, and go back home.