Sinclair ZX SPECTRUM+ - Page 85

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Contents3
How to Use this Book4
Get Going5
Setting up Your ZX Spectrum+6
Checklist6
Setting up Questions and Answers6
Powering up7
Sockets and Connectors7
Tuning in Your TV8
Tuning Controls8
How to Test the Spectrum's Colours8
Setting up Troubleshooter9
What Your ZX Spectrum+ Can Do10
Experiment10
Program Your Spectrum10
How to Enter and Run a Program10
How to Alter a Program11
Patterns11
Flashing Circles11
Manic Mosaic12
How to Restart a Program12
How to Correct Mistakes12
Polyhedra12
What Next13
Starts and Stripes13
Shimmering Sunrise13
How to Begin a New Program13
How to Use Ready-To-Run Software14
How Programs Are Loaded into the Spectrum14
Software Questions and Answers14
How to Connects Your Casette Player15
Making the Right Connections15
Software Tips15
EAR and MIC Sockets15
How to Load a Program16
Software Loading Tips16
Software Loading Troubleshooter18
Start Programming19
The Keyboard - Your Computer's Control Panel20
Keys and Keywords20
Selecting Keywords and Signs21
How to Operate the Keys22
Keyword Mode22
How to Select a Keyword, Symbol or Character22
Letter and Capital Modes23
Extended Mode23
Graphics Mode23
Editing on the Spectrum23
The Television Calculator24
The Spectrum's Calculating Signs24
How to Make a Program Ask for a Number25
Programming a Multiplication Table25
Why You Need to Use Brackets25
How to Punctuate with Your Spectrum25
Colour and How to Use It26
The Spectrum's Three Ways of Usig Colour26
Colour Tester26
Colour Codes26
How to Write Programs with Colour27
Programming Colour Bar Chart27
Colour Combinations27
Bar Chart27
Simple DIY Graphics28
The Low-Resolution Screen28
How to Draw Rainbow Patterns28
How to Select Graphics Characters28
Programming Pictures29
How to Use for Next Loops29
Rainbow29
ZX Robot29
The On-Screen Sketchpad30
The High-Resolution Grid30
Plotting and Drawing30
Star30
How to Fill in Shapes31
Your Screen Sketchpad31
Making Decisions with if and then31
Solid Triangle31
Designing Patterns and Pictures32
Random Effects and Subroutines32
Squares32
Symmetrical Patterns32
Using for Next Loops in Graphics33
Flash, Bright and Inverse33
Pyramids33
How to Create Computer Characters34
Designing a Graphics Character34
How to 'MIX' Colours with Speckled Squares34
Spiders34
Drawing a Chessboard35
Simplifying Graphics with Read and Data35
Using Colour Control Codes35
Animation36
Vertical and Horizontal Motion36
Target Practice36
Falling Spider36
Bouncing a Ball37
Using Attributes37
Spiders and Pyramids37
Exploding Spiders37
How to Make Music and Sound Effects38
Programming Sounds38
Pitch Values for Making Music38
Bubbling38
Sound and Vision39
Listoff39
Keyboard Converter39
How to Amplify Your Spectrum39
How to Save Your Own Programs40
Recording Your Own Programs40
Verify Your Program41
Automatic Program Start41
Software Saving Tips41
Saving Code, Screens and Data41
Software Saving Troubleshooter42
Learn about Your ZX Spectrum+43
What's Inside?44
Inside a Chip44
How the Chips Link up44
How Does Your ZX Spectrum+ Work?46
Entering and Running a Program46
Storing a Program46
Binary Codes46
Input-To-Output Pathways47
How to Connect Peripherals48
Spectrum-Compatible Printers48
ZX Interface 148
Loading a Microdrive48
ROM Cartridges and Joysticks49
Memory Map50
System Variables50
Learn about Sinclair Basic51
Programmer's Reference Guide to Sinclair Basic Keywords52
Keyword Classes52
Numbers and Variables52
Keyword Format52
Signs in Sinclair Basic53
Character Set53
Screen Reports76
Beyond Basic77
Machine Code77
Instant Stripes77
Computer Jargon78
Index80
Screen Display Grids82

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Sinclair ZX SPECTRUM+ - Page 85

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