Bitwise IO: Difference between revisions

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 loop_CompressBits:
 LDA (z_BC),y
-beq Terminated    ; if the value read the null terminator, we are done.
+beq Terminated    ; if the value read is equal to the null terminator, we are done.
-AND #$0F          ; returns either 0 or 1 in bit 0. There is no error checking for invalid input at the moment.
+                  ; value is assumed to equal #$30 for 0 or #$31 for 1.
+ror               ; bottom bit of accumulator is rotated into the carry flag.
-ror               ; accumulator is rotated into the carry flag.
 rol tempMath      ; the carry is shifted into the bottom of tempMath.
 ; repeating this with each successive ascii bit representation