.

solutions_only/project 04/Fill.asm

@@ -0,0 +1,97 @@
+@END //check if button is pressed
+0;JMP
+
+(BLACK)
+//start= 16384 the start of the screen memory
+@SCREEN
+D=A
+@start
+M=D
+
+//n=8,192 this is the memory for the display =addreass of the keyboard - address of the screen
+@8192
+D=A
+@n
+M=D
+
+//i=0 this is the index for each group of pixels
+@i
+M=0
+
+(LOOP1)
+//if i==n goto end
+@i
+D=M
+@n
+D=D-M
+@END
+D;JEQ
+
+//start+1=-1 set each group of pixels to -1 which is = 111111111111
+@start
+D=M
+@i
+A=D+M
+M=-1
+
+// increment i by 1
+@i
+M=M+1
+
+// go back to the start of the loop
+@LOOP1
+0;JMP
+
+(WHITE)
+//start= 16384 the start of the screen memory
+@SCREEN
+D=A
+@start
+M=D
+
+//n=8,192 this is the memory for the display =addreass of the keyboard - address of the screen
+@8192
+D=A
+@n
+M=D
+
+//i=0 this is the index for each group of pixels
+@i
+M=0
+
+(LOOP2)
+//if i==n goto end
+@i
+D=M
+@n
+D=D-M
+@END
+D;JEQ
+
+//start+1=-1 set each group of pixels to 0 which is = 00000000
+@start
+D=M
+@i
+A=D+M
+M=0
+
+// increment i by 1
+@i
+M=M+1
+
+// go back to the start of the loop
+@LOOP2
+0;JMP
+
+//check if button is pressed
+(END)
+@KBD
+D=M
+@WHITE
+D;JEQ
+@KBD
+D=M
+@BLACK
+D;JNE
+@END
+0;JMP

solutions_only/project 04/Mult.asm

@@ -0,0 +1,24 @@
+@R2
+M=0
+@sum
+M=0
+(LOOP)
+@1
+D=M
+@END
+D;JEQ 	// if R1==0 goto end
+@R0
+D=M    	// D=R0
+@sum
+M=M+D  	// sum=sum+R0
+@R1
+M=M-1	//R1=R1-1
+@sum
+D=M
+@R2
+M=D
+@LOOP
+0;JMP
+(END)
+@END
+0;JMP