diff options
| author | Rangi <remy.oukaour+rangi42@gmail.com> | 2020-08-29 16:54:58 -0400 |
|---|---|---|
| committer | Rangi <remy.oukaour+rangi42@gmail.com> | 2020-08-29 16:54:58 -0400 |
| commit | a23996be779bb459f16b57eb2b3b7883bf2ef2f6 (patch) | |
| tree | 25b5bbe8e474a8e39eba24b1a7bba2e21b1ddfe1 /Optimizing-assembly-code.md | |
| parent | 0547c45c434ee0b16bfe8c51a92225062ec4eb31 (diff) | |
asm
Diffstat (limited to 'Optimizing-assembly-code.md')
| -rw-r--r-- | Optimizing-assembly-code.md | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/Optimizing-assembly-code.md b/Optimizing-assembly-code.md index d1dd25f..34378d0 100644 --- a/Optimizing-assembly-code.md +++ b/Optimizing-assembly-code.md @@ -638,8 +638,8 @@ But do: You can do: -``` -; 7 bytes, 11 cycles +```asm + ; 7 bytes, 11 cycles ld l, a ld h, 0 add hl, hl @@ -648,8 +648,8 @@ You can do: add hl, hl ``` -``` -; 7 bytes, 11 cycles +```asm + ; 7 bytes, 11 cycles ld l, a ld h, 0 rept 4 @@ -659,8 +659,8 @@ endr But if `a` is definitely small enough, and its value can be changed, then do: -``` -; 7 bytes, 10 cycles; sets a = a * 2; requires a < $80 +```asm + ; 7 bytes, 10 cycles; sets a = a * 2; requires a < $80 add a ld l, a ld h, 0 @@ -669,8 +669,8 @@ But if `a` is definitely small enough, and its value can be changed, then do: add hl, hl ``` -``` -; 7 bytes, 9 cycles; sets a = a * 4; requires a < $40 +```asm + ; 7 bytes, 9 cycles; sets a = a * 4; requires a < $40 add a add a ld l, a @@ -679,8 +679,8 @@ But if `a` is definitely small enough, and its value can be changed, then do: add hl, hl ``` -``` -; 7 bytes, 8 cycles; sets a = a * 8; requires a < $20 +```asm + ; 7 bytes, 8 cycles; sets a = a * 8; requires a < $20 add a add a add a @@ -689,8 +689,8 @@ But if `a` is definitely small enough, and its value can be changed, then do: add hl, hl ``` -``` -; 7 bytes, 7 cycles; sets a = a * 16; requires a < $10 +```asm + ; 7 bytes, 7 cycles; sets a = a * 16; requires a < $10 add a add a add a @@ -699,8 +699,8 @@ But if `a` is definitely small enough, and its value can be changed, then do: ld h, 0 ``` -``` -; 7 bytes, 7 cycles; sets a = a * 16; requires a < $10 +```asm + ; 7 bytes, 7 cycles; sets a = a * 16; requires a < $10 rept 4 add a endr @@ -710,8 +710,8 @@ endr Or if the value of `a` can be changed and you want to optimize for speed over size, do: -``` -; 8 bytes, 8 cycles; sets a = l +```asm + ; 8 bytes, 8 cycles; sets a = l swap a ld l, a and $f @@ -722,8 +722,8 @@ Or if the value of `a` can be changed and you want to optimize for speed over si Or do: -``` -; 8 bytes, 8 cycles; sets a = h +```asm + ; 8 bytes, 8 cycles; sets a = h swap a ld h, a and $f0 |