Re: Finding LSB in a register
Posted: Fri Jan 18, 2019 3:22 pm
This any good?arkannoyed wrote: ↑Fri Jan 18, 2019 2:01 pm Seems to almost do what it needs to. The only thing left that I should've mentioned before is that it needs to RESet the LSB in HL (the data register).
So whereas maybe HL=05c0h, after creating the mask, bit 6 of L needs to be cleared, giving the result HL=0580h.
Does that make sense?
Code: Select all
ld d, h
ld e, l
dec de
ld a, d
xor h
ld d, a
cpl
and h
ld h, a
ld a, e
xor l
ld e, a
cpl
and l
ld l, a
rr d
rr e