comments

1 files changed, 7 insertions, 6 deletions

diff --git a/Optimizing-assembly-code.md b/Optimizing-assembly-code.md
index 7a3609d..8f18570 100644
--- a/Optimizing-assembly-code.md
+++ b/Optimizing-assembly-code.md
@@ -88,9 +88,10 @@ Don't use the optimized versions if you need to preserve flags. As such, `ld a,
 
 ```asm
 	ld a, [wIsTrainerBattle]
-	and a   ; sets flag Z if [wIsTrainerBattle] is 0
-	ld a, 0 ; sets a to 0 without affecting Z
+	and a   ; sets zero flag if [wIsTrainerBattle] == 0
+	ld a, 0 ; sets a to 0 without affecting zero flag
 	jr nz, .is_trainer_battle
+	; is not trainer battle
 ```
 
 
@@ -184,8 +185,8 @@ Don't do:
 ```asm
 	; 26 bytes, 26 cycles
 rept 8
-	rra
-	rl b
+	rra  ; nor rla
+	rl b ; nor rr b
 endr
 	ld a, b
 ```
@@ -234,8 +235,8 @@ Or if you really want to optimize for size over speed, then don't do:
 	; 10 bytes, 59 cycles
 	ld bc, 8  ; lb bc, 0, 8
 .loop
-	rra
-	rl b
+	rra  ; nor rla
+	rl b ; nor rr b
 	dec c
 	jr nz, .loop
 	ld a, b