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Diffstat (limited to 'Optimizing-assembly-code.md')
| -rw-r--r-- | Optimizing-assembly-code.md | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Optimizing-assembly-code.md b/Optimizing-assembly-code.md index 9933b84..c411b16 100644 --- a/Optimizing-assembly-code.md +++ b/Optimizing-assembly-code.md @@ -871,6 +871,14 @@ And if the constant is 8-bit and nonzero (i.e. 0 < `FooBar` < 256), then do: ld h, a ``` +And if the constant is zero (i.e. `FooBar` == 0 and `a` + `FooBar` == `a`), then do: + +```asm + ; 3 bytes, 3 cycles + ld l, a + ld h, 0 +``` + ### Set a 16-bit register to `a` \* 16 |