Category: CSE417

What is LLVM? What is a Back-End? Relevant Documentation Basic reference for LLVM back-end writing is: http://jonathan2251.github.io/lbd/ This document is huge.. A short summary is given…

New instructions for Mammal New Instructions and Their FormatsNN Note that there is no instruction corresponding to an interrupt. Finite State Machine for Mammal The…

Introduction to Interrupts Interrupts are an alternative to polling. Why do we require interrupts? Basic setup of interrupts Basic steps of Interrupt processing The following…

Bird adds four instructions to the basic Reptile design: push, pop, call and return. All these instructions use stack. Review of Stack Operations For stack…

  module ilk_cpu(grounds, display, clk, pushbutton); input pushbutton; output [3:0] grounds; output [6:0] display; input clk; //memory map is defined here localparam BEGINMEM=12’h000, ENDMEM=12’h6ff, KEYPAD=12’h900,…

REPTILE: EXAMPLE PROGRAMS Reptile has a minimum instruction set which is capable of solving quite complicated problems.. In the coming lectures we will continue to…

0. Introduction In comparison to frog, reptile has some additional capabilities: Reptile can transfer data between arbitrary locations in memory and registers. Note that frog…

Debouncing calculations for Keypad We have alluded to the problem of bouncing in mechanical switches in chap. ??. As the keypad is constructed out of…

Leds Leds are the simplest of the output devices.  A led is basically a “light bulb” with two pins. One of the pins is known…