VIC20 Exposed.

Format:

Book

Author/Creator:

Vander, John.

Series:

Retro Reproductions

Retro Reproductions ; v.3

Language:

English

Subjects (All):

VIC 20 (Computer).

Physical Description:

1 online resource (171 pages)

Edition:

1st ed.

Place of Publication:

Luton, Bedfordshire : Andrews UK Ltd., 2021.

Summary:

First published in 1983, this user-friendly guide to the VIC 20 helped many owners of the much-loved home computer understand their machine to a whole new level. Considered now to have been well ahead of its time, the VIC 20 was the first computer ever to sell one million units and still has a dedicated fanbase.* * *As the original publisher Melbourne House wrote:Now you can understand all the mysteries of your VIC 20, without having to struggle through its complex user's guide. VIC 20 Exposed gives an in-depth explanation of the entire VIC 20 system in a clear and easy to follow manner. With this book, every VIC 20 owner will be able to understand how this versatile home computer actually works.Every function and programming variable is carefully explained, and with the aid of the many demonstration programs, this book will teach you how to take full advantage of all the VIC 20's impressive capabilities. You'll soon be achieving effects more spectacular than you believed p.

Contents:

Cover

Contents

Front Matter

Publisher Information

VIC 20 Exposed

Chapter 1

Programming in Basic

Immediate and Program Modes

Control Structures

Data Structures

Bits and Bytes

Characters

Variables

Arrays

Operators

Arithmetic Operators

String Operators

Relational Operators

Binary and Hexidecimal Number Systems

Masks

Table of Operator Procedences

Chapter 2

VIC20 BASIC commands

Chapter 3

Advanced BASIC techniques

Compressing BASIC Programs

Abbreviations for BASIC keywords

Appending BASIC Programs

BASIC Program Storage format

VIC20 BASIC Keyword codes

Clearing the Keyboard Buffer

Routines Using the Keyboard Buffer

Merge Routine

Chapter 4

Graphics

Graphics Memory

Low Resolution Graphics

Screen Background and Border Colours

Character Colour

Multicolour Mode

Screen Memory

Character Memory

The Character Table

Designing your own Characters

Accessing both Custom and Built-in Character Sets

Where to put the New Character Set

High Resolution Graphics

Multicolour Characters

Chapter 5

Sound

Tone Registers

Attack and Decay of Notes

Saving and Loading Music

Noise Register

Chapter 6

External Devices

Datasette

Floppy Disk Drives

1515 Graphics Printer

Chapter 7

Games Controls

Keyboard

Joystick

Paddles

Chapter 8

Hardware

Inside the VIC20

The microprocessory

The Video Interface Chip

The Video RAM

The Colour RAM

The Internal Registers of the VIC

Chapter 9

Machine Language Programming

The Case for Machine Language

Inputting, Saving, and Loading Machine Language Programs

Programming in Machine Language

Registers

Addressing Modes

The 6502 Instruction Set

Interrupt driven Subroutines

Examples and Handy Routines

Back Matter.

Appendices

A: CHR Value Codes/Screen Codes/ASCII Codes

B: Complete Memory Map

C: Keyboard Graphics and how to get them

D: Useful ROM Routines (KERNAL)

E: Background/Border Colour Codes

F: Memory Allocation

G: Basic Error Messages

H: Current Key Pressed

I: Basic Routines available from M/C.

Notes:

Description based on publisher supplied metadata and other sources.

Other Format:

Print version: Vander, John VIC20 Exposed

ISBN:

9781789829563

OCLC:

1312170232