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Diffstat (limited to 'cpu/instructions/arithmetic/notes.txt')
| -rw-r--r-- | cpu/instructions/arithmetic/notes.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/cpu/instructions/arithmetic/notes.txt b/cpu/instructions/arithmetic/notes.txt new file mode 100644 index 0000000..29500cb --- /dev/null +++ b/cpu/instructions/arithmetic/notes.txt @@ -0,0 +1,4 @@ +Unless otherwise specified, all arithmetic instructions: + Set the zero flag when the result is 0 + Set the overflow flag when a signed operation results in inversion of the sign due to lack of bits to store the value + Set the carry flag when an unsigned operation results in a lower number due to lack of bits to store the value |