Titlebook: An Introduction to the Commodore 64; Adventures in Progra Nevin B. Scrimshaw,James Vogel Book 1983 Springer Science+Business Media New York

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BASIC Number Crunching,Computers, like elephants, never forget. The computer keeps track of vast arrays of information. But unlike elephants, computers are very fast. They’re fast because the microprocessor is a real whiz at getting information in and out of memory.

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初次登台

Graphics,The Commodore 64 supports some very sophisticated tools for graphics. In addition to the symbols accessible through the keyboard, you have many other ways to design bright pictures and animate your programs. Using the POKE command to control screen color and write symbols on the screen is just the beginning.

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Sound and Music,Among its many features, your Commodore 64 boasts a synthesizer on a chip. The chip is called SID, or Sound Interface Device, and with it, you can create sound and music.

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Real-Time Graphics,We are now ready to learn how to move sprites around the screen. We will use two sprites in a program that can form the core of all kinds of adventure programs. Since our task has many components, we’ll have to be organized.

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Microsurgery,Until now, we’ve been working with BASIC number variables, POKEing numbers into memory address registers to create video images. In this chapter, we’ll consider . and build a colorful holiday tree out of one particular string.

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