From d0e6cadde00eff4c49c5abbb17d0370da25dc78f Mon Sep 17 00:00:00 2001
From: Aadhavan Srinivasan <aadhavan@twomorecents.org>
Date: Tue, 14 Feb 2023 19:24:54 -0600
Subject: [PATCH] Added comments to assembly code

---
 mult3or5/main.s | 34 ++++++++++++++--------------------
 1 file changed, 14 insertions(+), 20 deletions(-)

diff --git a/mult3or5/main.s b/mult3or5/main.s
index 4536a7b..c1d6aed 100644
--- a/mult3or5/main.s
+++ b/mult3or5/main.s
@@ -2,35 +2,29 @@
 .section .text
 
 func:
-	MOV R0,#3
-	MOV R1,#5
-	MOV R2,#0
+	MOV R0,#3  @Move 3 to R0
+	MOV R1,#5  @Move 5 to R1
+	MOV R2,#0  @Move 0 to R2
 loop:
-checkeq:
-@	CMP R0,R1
-@mult15:
-@	ADDEQ R2,R2,R0
-@	BEQ incr
-else:
 add5:
-	ADD R2,R2,R1
-	ADD R1,R1,#5
+	ADD R2,R2,R1  @Add R1 to R2
+	ADD R1,R1,#5  @Increment R1 by 5
 add3:
-	ADD R2,R2,R0
-	ADD R0,R0,#3
+	ADD R2,R2,R0  @Add R0 to R2
+	ADD R0,R0,#3  @Increment R0 by 3
 
 check3:
-	CMP R0,#1000
-	BLT check5
-	BGE rmv15
+	CMP R0,#1000  @Is R0 less than 1000?
+	BLT check5  @If true, check 5
+	BGE rmv15  @If the multiple of 3 is greater than 1000, go to rmv15
 
 check5:
-	CMP R1,#1000
-	BLT loop
-	BGE add3
+	CMP R1,#1000  @Is R1 less than 1000?
+	BLT loop  @If true, go back to loop
+	BGE add3  @If the multiple of 5 reaches 1000, go to add3 - Continue adding multiples of 3, because those wouldn't have reached 1000 yet
 
 rmv15:
-	MOV R0,#15
+	MOV R0,#15  @The loop that follows is intended to subtract multiples of 15, which would have been added twice - 3, 6, 9, 12, 15, 18 ; 5, 10, 15, 20
 loop2:
 	SUB R2,R2,R0
 	ADD R0,R0,#15