Add solutions for part 1

projects/06/rect/Rect.asm

@@ -0,0 +1,35 @@
+// This file is part of www.nand2tetris.org
+// and the book "The Elements of Computing Systems"
+// by Nisan and Schocken, MIT Press.
+// File name: projects/06/rect/Rect.asm
+
+// Draws a rectangle at the top-left corner of the screen.
+// The rectangle is 16 pixels wide and R0 pixels high.
+
+   @0
+   D=M
+   @INFINITE_LOOP
+   D;JLE 
+   @counter
+   M=D
+   @SCREEN
+   D=A
+   @address
+   M=D
+(LOOP)
+   @address
+   A=M
+   M=-1
+   @address
+   D=M
+   @32
+   D=D+A
+   @address
+   M=D
+   @counter
+   MD=M-1
+   @LOOP
+   D;JGT
+(INFINITE_LOOP)
+   @INFINITE_LOOP
+   0;JMP

projects/06/rect/RectL.asm

@@ -0,0 +1,32 @@
+// This file is part of www.nand2tetris.org
+// and the book "The Elements of Computing Systems"
+// by Nisan and Schocken, MIT Press.
+// File name: projects/06/rect/RectL.asm
+
+// Symbol-less version of the Rect.asm program.
+
+@0
+D=M
+@23
+D;JLE
+@16
+M=D
+@16384
+D=A
+@17
+M=D
+@17
+A=M
+M=-1
+@17
+D=M
+@32
+D=D+A
+@17
+M=D
+@16
+MD=M-1
+@10
+D;JGT
+@23
+0;JMP

projects/06/rect/RectL.hack

@@ -0,0 +1,25 @@
+0000000000000000
+1111110000010000
+0000000000010111
+1110001100000110
+0000000000010000
+1110001100001000
+0100000000000000
+1110110000010000
+0000000000010001
+1110001100001000
+0000000000010001
+1111110000100000
+1110111010001000
+0000000000010001
+1111110000010000
+0000000000100000
+1110000010010000
+0000000000010001
+1110001100001000
+0000000000010000
+1111110010011000
+0000000000001010
+1110001100000001
+0000000000010111
+1110101010000111