Difference between revisions of "Chapter II - The Playfield Hardware"
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== HOW THE BITS OF THE COLOR REGISTERS ARE INTERPRETED == | == HOW THE BITS OF THE COLOR REGISTERS ARE INTERPRETED == | ||
| − | == BITS WHICH CONTROL COLOR BIT INTERPRETATION == | + | === BITS WHICH CONTROL COLOR BIT INTERPRETATION === |
| + | |||
| + | === HOW THE COLOR BITS ARE INTERPRETED === | ||
| + | |||
| + | == MULTI-BIT-PLANE COLOR SELECTION == | ||
| + | |||
| + | == EXAMPLE TWO: TWO BIT-PLANES SELECTING A COLOR == | ||
| + | |||
| + | == EXAMPLE THREE: HOW 5 BIT-PLANES SELECT A COLOR == | ||
| + | |||
| + | = SELECTING COMBINATIONS OF BIT-PLANES = | ||
| + | |||
| + | == SELECTING HOW MANY BIT-PLANES TO USE == | ||
| + | |||
| + | == SELECTING HOW BIT-PLANES ARE GROUPED == | ||
| + | |||
| + | === COLOR INTERPRETATION FOR PLAYFIELD 1 === | ||
| + | |||
| + | === COLOR INTERPRETATION FOR PLAYFIELD 2 === | ||
| + | |||
| + | == HOLD & MODIFY MODE == | ||
| + | |||
| + | === REGISTER BIT THAT SELECTS THIS MODE === | ||
| + | |||
| + | == HOW BIT-PLANE DATA IS STORED IN MEMORY == | ||
| + | |||
| + | = WHERE IS THE BIT-PLANE DATA STORED = | ||
| + | |||
| + | == EXAMPLE ONE: PICTURE/DISPLAY SAME SIZE == | ||
| + | |||
| + | == EXAMPLE TWO: PICTURE TWICE THE SIZE OF DISPLAY == | ||
| + | |||
| + | == EXAMPLE THREE: INTERLACED PICTURE == | ||
| + | |||
| + | = HOW TO CONTROL THE SIZE OF THE DISPLAY = | ||
| + | |||
| + | == CONTENTS OF DISPLAY WINDOW START REGISTER == | ||
| + | |||
| + | == CONTENTS OF DISPLAY WINDOW STOP REGISTER == | ||
| + | |||
| + | = DETERMINING HOW MUCH DISPLAY MEMORY IS NEEDED = | ||
| + | |||
| + | = SCROLLING THE PLAYFIELDS = | ||
| + | |||
| + | == VERTICAL SCROLLING == | ||
| + | |||
| + | == HORIZONTAL SCROLLING == | ||
| + | |||
| + | === REGISTERS WHICH AFFECT HORIZONTAL SCROLLING === | ||
| + | |||
| + | = HOW PLAYFIELDS INTERACT WITH OTHER ELEMENTS = | ||
| + | |||
| + | = PLAYFIELD SELECTION COLOR CHARTS = | ||
Revision as of 22:55, 18 August 2024
Contents
- 1 INTRODUCTION
- 2 PLAYFIELD HARDWARE
- 3 HOW TO SELECT THE COLOR OF PLAYFIELD ELEMENTS
- 4 SELECTING COMBINATIONS OF BIT-PLANES
- 5 WHERE IS THE BIT-PLANE DATA STORED
- 6 HOW TO CONTROL THE SIZE OF THE DISPLAY
- 7 DETERMINING HOW MUCH DISPLAY MEMORY IS NEEDED
- 8 SCROLLING THE PLAYFIELDS
- 9 HOW PLAYFIELDS INTERACT WITH OTHER ELEMENTS
- 10 PLAYFIELD SELECTION COLOR CHARTS
