Haskell R. Digital Design Using Digilent FPGA Boards...2010

Textbook in PDF format

Introduction
Background
Digital Logic
VHDL
Basic Logic Cates
Truth Tables and Logic Equations
The Three Basic Gates
Four New Gates
Positive and Negative Logic: De Morgan’s Theorem
Sum of Products Design
Product of Sums Design
VHDL Examples
Example 1: 2-Input Gates
Example 2: Multiple-Input Gates
Problems
Boolean Algebra and Logic Equations
Boolean Theorems
One-Variable Theorems
Two- and Three-Variable Theorems
Karnaugh Maps
Two-Variable K-Maps
Three-Variable K-Maps
Four-Variable K-Maps
Computer Minimization Techniques
Tabular Representations
Prime Implicants
Essential Prime Implicants
VHDL Examples
Example 3 - Majority Circuit
Example 4 - 2-Bit Comparator
Problems
Implementing Digital Circuits
Implementing Gates
Transistor-Transistor Logic (TTL)
Programmable Logic Devices (PLDs and CPLDs)
A 2-Input, 1-Output PLD
The GAL 16V8
CPLDs
Field Programmable Gate Arrays (FPGAs)
VHDL Examples
Example 5 - Map Report
Problems
Combinational Logic
Multiplexers
2-to-l Multiplexer
4-to-l Multiplexer
Quad 2-to-l Multiplexer
VHDL Examples
Example 6 - 2-to-l Multiplexer: //Statement
Example 7 - 4-to-l Multiplexer: port map Statement
Example 8 - 4-to-l Multiplexer: case Statement
Example 9 - A Quad 2-to-l Multiplexer
Example 10-Generic Multiplexer: Parameters
Example 11 - Glitches
Segment Displays
VHDL Examples
Example 12 - 7-Segment Decoder: Logic Equations
Example 13 - 7-Segment Decoder: case Statement
Example 14 - Multiplexing 7-Segment Displays
Example 15 - 7-Segment Displays: x7seg and x7segb
Code Converters
Binary-to-BCD Converters
Shift and Add 3 Algorithm
Gray Code Converters
VHDL Examples
Example 16 - 4-Bit Binary-to-BCD Converter: Logic Equations
Example 17 - 8-Bit Binary-to-BCD Converter: for Loops
Example 18 - 4-Bit Binary to Gray Code Converter
Example 19 - 4-Bit Gray Code to Binary Converter
Comparators
Cascading Comparators
TTL Comparators
VHDL Examples
Example 20 - 4-Bit Comparator Using a VHDL Procedure
Example 21 -N-Bil Comparator Using Relational Operators
Decoders and Encoders
Decoders
TTL Decoders
Encoders
Priority Encoders
TTL Encoders
VHDL Examples
Example 22 - 3-to-8 Decoder: Logic Equations
Example 23 - 3-to-8 Decoder: for Loops
Example 24 - 8-to-3 Encoder: Logic Equations
Example 25 - 8-to-3 Encoder: for Loops
Example 26 - 8-to-3 Priority Encoder
Problems
Arithmetic Circuits
Adders
Half Adder
Full Adder
Carry and Overflow
TTL Adder
VHDL Examples
Example 27 - 4-Bil Adder: Logic Equations
Example 28 - 4-Bit Adder: Behavioral Statements
Example 29 - N-Bit Adder: Behavioral Statements
Subtractors
Half Subtractor
Full Subtractor
An Adder/Subtractor Circuit
VHDL Examples
Example 30 - 4-Bit Adder/Subtractor: Logic Equations
Example 31 - N-Bit Subtraclor: Behavioral Statements
Shifters
VHDL Examples
Example 32 - 4-Bit Shifter
Multiplication
Binary Multiplication
Signed Multiplication
VHDL Examples
Example 33 - Multiplying by a Constant
Example 34 - A 4-Bit Multiplier
The Multiplication Operator
Division
Binary Division
VHDL Examples
Example 35 - An 8-Bit Divider using a Procedure
Arithmetic Logic Unit (ALU)
VHDL Examples
Example 36 - 4-Bit ALU
Problems
Sequential Logic
Latches and Flip-Flops
SR Latch
Clocked SR Latch
D Latch
Edge-Triggered D Flip-Flop
VHDL Examples
Example 37 - Edge-Triggered D Flip-Flop
Example 38 - Edge-Triggered D Flip-Flop with Set and Clear
Example 39 - D Flip-Flops in VHDL
Example 40 - D Flip-Flop with Asynchronous Set and Clear
Example 41 - Divide-by-2 Counter
Registers
VHDL Examples
Example 42 - 1 -Bit Register
Example 43- 4-Bit Register
Example 44 - N-Bit Register
Shift Registers
4-Bit Ring Counter
VHDL Examples
Example 45 - Shift Registers
Example 46 - Ring Counter
Example 47 - Debounce Pushbuttons
Example 48 - Clock Pulse
Counters
Arbitrary Waveform
VHDL Examples
Example 49 - 3-Bit Counter
Example 50 - Modulo-5 Counter
Example 51 - N-Bit Counter
Example 52 - Clock Divider: Modulo-1 OK Counter
Example 53 - Arbitrary Waveform
Pulse-Width Modulation (PWM)
Controlling the Speed of a DC Motor using PWM
Controlling the Position of a Servo using PWM
VHDL Examples
Example 54 - Pulse-Width Modulation (PWM)
Example 55 - PWM Signal for Controlling Servos
BASYS/Nexys-2 Board Examples
VHDL Examples
Example 56 - Loading Switch Data into a Register
Example 57 - Shifting Data into a Shift Register
Example 58 - Scrolling the 7-Segment Display
Example 59 - Fibonacci Sequence
Problems
Finite State Machines
Mealy and Moore State Machines
A Moore Machine Sequence Detector
Mealy Machine Sequence Detector
VHDL Examples
Example 60 - Sequence Detector
Example 61 - Door Lock Code
VHDL Package
Example 62 - Traffic Lights
Problems
Datapaths and Control Units
VHDL while Statement
Example 63 - GCD Algorithm - Part 1
Datapaths and Control Units
Example 64 - GCD Algorithm - Part 2
Example 65 - An Integer Square Root Algorithm
Square Root Control Unit
Integrating the Datapath and Control Unit
Example 66 -GCD Algorithm - Part 3
Example 67 - Integer Square Root- Part 2
Memory
Example 68 - A VHDL ROM
Example 69 - Distributed RAM/ROM
Example 70 - Block RAM/ROM
VGA Controller
Example 71 - VGA-Stripes
Example 72 - VGA-PROM
Example 73 - Sprites in Block ROM
Example 74 - Screen Saver
PS/2 Port
Example 75 - Keyboard
Example 76 - Mouse
Appendices:
Aldcc Active-HDL Tutorial
Project Setup
Design Entry
Simulation
Creating a Top-level Design
Synthesis and Implementation
Program FPGA Board
Number Systems
Counting in Binary' and Hexadecimal
Positional Notation
Fractional Numbers
Number System Conversions
Negative Numbers
Making a Turnkey System
VHDL Quick Reference Guide