From 9542deeb483a00b6fabed7574720926ce97d7511 Mon Sep 17 00:00:00 2001 From: Frederick Yin Date: Tue, 16 Aug 2022 11:54:23 +0800 Subject: Projects, 01-06 completed --- projects/06/rect/Rect.asm | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 projects/06/rect/Rect.asm (limited to 'projects/06/rect/Rect.asm') diff --git a/projects/06/rect/Rect.asm b/projects/06/rect/Rect.asm new file mode 100644 index 0000000..6cbbaeb --- /dev/null +++ b/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 -- cgit v1.2.3