aparler/RosettaCodeData
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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
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2
Task/Twos-complement/Z80-Assembly/twos-complement-1.z80 Normal file
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@ -0,0 +1,2 @@
ld a,%00001111
neg ;returns %11110001 in a

3
Task/Twos-complement/Z80-Assembly/twos-complement-2.z80 Normal file
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@ -0,0 +1,3 @@
ld a,%00001111
cpl ;game boy doesn't have NEG but it has CPL which flips all the bits.
inc a ;returns %11110001 in a

6
Task/Twos-complement/Z80-Assembly/twos-complement-3.z80 Normal file
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xor a ;ld a,0
sub c
ld c,a
sbc a ;loads &FF into A if "sub c" set the carry (borrow) flag. Otherwise, a remains zero.
sub b
ld b,a