From ec61018d15ba4ad0a41e1ab44d7e1ecb5f2870d2 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <me@ypei.me>
Date: Tue, 12 Dec 2017 14:30:43 +0100
Subject: finished project 4

---
 projects/04/fill/Fill.asm | 64 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 63 insertions(+), 1 deletion(-)

(limited to 'projects/04/fill/Fill.asm')

diff --git a/projects/04/fill/Fill.asm b/projects/04/fill/Fill.asm
index 8f24a95..16d63e2 100644
--- a/projects/04/fill/Fill.asm
+++ b/projects/04/fill/Fill.asm
@@ -11,4 +11,66 @@
 // "white" in every pixel;
 // the screen should remain fully clear as long as no key is pressed.
 
-// Put your code here.
\ No newline at end of file
+// Put your code here.
+
+(BEGIN)
+@KBD
+D=M
+
+@BLACK
+D;JNE
+
+@WHITE
+0;JMP
+
+(BLACK)
+@8191
+D=A
+@i
+M=D
+
+(LOOPB)
+@i
+D=M
+@j
+M=D
+@SCREEN
+D=A
+@j
+M=M+D
+A=M
+M=-1
+@i
+M=M-1
+D=M
+@LOOPB
+D+1;JGT
+
+@BEGIN
+0;JMP
+
+(WHITE)
+@8191
+D=A
+@i
+M=D
+
+(LOOPW)
+@i
+D=M
+@j
+M=D
+@SCREEN
+D=A
+@j
+M=M+D
+A=M
+M=0
+@i
+M=M-1
+D=M
+@LOOPW
+D+1;JGT
+
+@BEGIN
+0;JMP
-- 
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