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35 lines
1.5 KiB
Plaintext
35 lines
1.5 KiB
Plaintext
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vcslib - Atari 2600 Library Functions for C02
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This library contains commonly used functions for the Atari VCS.
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res = adcbcd(num, &var); Adds value num plus carry to variable var
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using BCD arithmetic.
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Used to update multi-byte BCD numbers, such
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as scores with more than two digits.
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Returns the updated contents of var. Can
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be called as a void function if the result
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is not needed.
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res = addbcd(num, &var); Adds value num to variable var using BCD
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arithmetic.
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Used to update BCD numbers, such as two
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digit scores.
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Returns the updated contents of var. Can
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be called as a void function if the result
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is not needed.
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posobj(hrz, obj); Sets horizontal position of object obj to
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hrz.
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Argument obj may be any of the following:
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0 = Player 0
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1 = Player 1
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2 = Missile 0
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3 = Missile 1
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4 = Ball
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