mirror of
https://github.com/dschmenk/VM02.git
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64 lines
1.5 KiB
Plaintext
64 lines
1.5 KiB
Plaintext
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const showlores = $C056
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const keyboard = $C000
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const keystrobe = $C010
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byte exitmsg[] = "PRESS ANY KEY TO EXIT."
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byte goodbye[] = "THAT'S ALL FOLKS!"
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byte i, j, k, w, fmi, fmk, color
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def textmode
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drop romcall(0, 0, 0, 0, $FB39)
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end
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def home
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drop romcall(0, 0, 0, 0, $FC58)
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end
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def gotoxy(x, y)
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^($24) = x
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drop romcall(y, 0, 0, 0, $FB5B)
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end
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def grmode
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drop romcall(0, 0, 0, 0, $FB40)
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^showlores
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end
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def colors
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while 1
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for w = 3 to 50
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for i = 1 to 19
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for j = 0 to 19
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k = i + j
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color = (j * 3) / (i + 3) + i * w / 12
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fmi = 40 - i
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fmk = 40 - k
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drop romcall(color, 0, 0, 0, $F864) ;grcolor(color);
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drop romcall(k, 0, i, 0, $F800) ;grplot(i, k);
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drop romcall(i, 0, k, 0, $F800) ;grplot(k, i);
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drop romcall(fmk, 0, fmi, 0, $F800) ;grplot(fmi, fmk);
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drop romcall(fmi, 0, fmk, 0, $F800) ;grplot(fmk, fmi);
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drop romcall(fmi, 0, k, 0, $F800) ;grplot(k, fmi);
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drop romcall(k, 0, fmi, 0, $F800) ;grplot(fmi, k);
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drop romcall(fmk, 0, i, 0, $F800) ;grplot(i, fmk);
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drop romcall(i, 0, fmk, 0, $F800) ;grplot(fmk, i);
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if ^keyboard >= 128
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drop ^keystrobe
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return
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fin
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next
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next
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next
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loop
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end
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grmode
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home
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gotoxy(10,22)
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prstr(@exitmsg)
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colors
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textmode
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home
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prstr(@goodbye)
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done
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