From d3a0cc3a8ba6dfeb64d3faeffdeb6845b60e5840 Mon Sep 17 00:00:00 2001 From: Yuchen Pei Date: Sat, 20 Jan 2018 15:41:49 +0100 Subject: rearranged the dir for github - removed tools and pdfs - rearranged the projects dirs - added md files - other minor changes --- tools/builtInChips/Screen.hdl | 35 ----------------------------------- 1 file changed, 35 deletions(-) delete mode 100644 tools/builtInChips/Screen.hdl (limited to 'tools/builtInChips/Screen.hdl') diff --git a/tools/builtInChips/Screen.hdl b/tools/builtInChips/Screen.hdl deleted file mode 100644 index 5e7837b..0000000 --- a/tools/builtInChips/Screen.hdl +++ /dev/null @@ -1,35 +0,0 @@ -// This file is part of www.nand2tetris.org -// and the book "The Elements of Computing Systems" -// by Nisan and Schocken, MIT Press. -// File name: tools/builtIn/Screen.hdl - -/** - * The Screen (memory map). - * Functions exactly like a 16-bit 8K RAM: - * 1. out(t)=Screen[address(t)](t) - * 2. If load(t-1) then Screen[address(t-1)](t)=in(t-1) - * - * The built-in chip implementation has the side effect of continuously - * refreshing a visual 256 by 512 black-and-white screen, simulated - * by the simulator. Each row in the visual screen is represented - * by 32 consecutive 16-bit words, starting at the top left corner - * of the visual screen. Thus the pixel at row r from the top and - * column c from the left (0<=r<=255, 0<=c<=511) reflects the c%16 - * bit (counting from LSB to MSB) of the word found in - * Screen[r*32+c/16]. - */ - -CHIP Screen { - - IN in[16], // what to write - load, // write-enable bit - address[13]; // where to read/write - OUT out[16]; // Screen value at the given address - - BUILTIN Screen; - CLOCKED in, load; -} - - - - \ No newline at end of file -- cgit v1.2.3