Re: [stella] Fastest missile/ball draw

Subject: Re: [stella] Fastest missile/ball draw
From: Manuel Rotschkar <cybergoth@xxxxxxxx>
Date: Fri, 25 Feb 2005 16:03:11 -0500

Hi there!

Well, if you have the ROM space, a faster way is always:

LDA (ballPointer),Y
sta ENABL

With ballpointer pointing to a ROM area organized like:

	.byte %00000000
	.byte %00000000 ; As many zeros as kernel is high
	.byte %00000000
       ...
	.byte %00000010
	.byte %00000010 ; As many "enables" as ball is high
	.byte %00000010
       ...
	.byte %00000000
	.byte %00000000 ; As many zeros as kernel is high
	.byte %00000000

Voil`: 8 cycles constant! ;-)

Greetings,
	Manuel

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Current Thread
[stella] Fastest missile/ball draw Bob Montgomery - 25 Feb 2005 16:18:24 -0000 <Possible follow-ups> Bob Montgomery - 25 Feb 2005 17:45:40 -0000 Manuel Rotschkar - 25 Feb 2005 21:03:12 -0000 <= M Zach - 25 Feb 2005 20:07:17 -0000 Bob Montgomery - 25 Feb 2005 20:10:29 -0000 Dennis Debro - 25 Feb 2005 20:22:33 -0000 Bob Montgomery - 25 Feb 2005 20:26:02 -0000

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