THE GAME OF
SIMON
Derek Lang
Nick Waskewicz
EGGN-482 Final Project
Overview
‣ Game Details
‣ History
‣ Hardware
‣ Circuit Schematic
‣ Program Flowchart
‣ Obstacles
‣ Potential Improvements
‣ Conclusion
‣ Questions
Game Details
‣ Game of memory skill
‣ Objective is to recreate a random sequence
‣ Sequence grows in length
with each success
‣ Each button lights up
and emits a different tone
History
‣ Invented by Ralph Baer and Howard Morrison
‣ Originally manufactured by Milton Bradley
‣ Used the TI TMS 1000 microprocessor (1974)
‧ 4-bit accumulator
‧ 64 or 128 nibbles
on-chip RAM
‧ 1KB or 2KB
on-chip program ROM
Hardware
‣ HCS12 Microcontroller
‣ Red, Green, Yellow,
White LED’s
‧ Current-limiting resistors
‣ Momentary Push-Button
Switches
‧ Pull-up and pull-down
resistors
‣ Audio Transducer
‧ Included on SSMI board
Circuit Schematic
Obstacles
‣ Debouncing push-button switches
‧ 30ms delay
‣ Generating random sequence
‧ cstdlib.h contains rand() and srand(int seed)
‧ Seed the pseudo-random number generator with free-running
counter
Potential Improvements
‣ LED and tone stays on for only as long as the
button is pushed
‣ LCD for high score and other output
‣ Idle LED sequence/song
Conclusion
‣ Game Details
‣ History
‣ Hardware
‣ Circuit Schematic
‣ Program Flowchart
‣ Obstacles
‣ Potential Improvements
Questions?
Nick Waskewicz
nwaskewi@mines.edu
Derek Lang
dlang@mines.edu