Subject: Re: Illegal opcodes (was Re: [stella] Reading Paddles?) From: Thomas Jentzsch <tjentzsch@xxxxxx> Date: Mon, 13 Jan 2003 21:15:45 +0100 |
Dennis Debro wrote: > In your source you have a cycle count of -1 for $0C???? I don't > understand this. Doesn't $0C take 4 cycles to execute? That's because the next instruction (which is masked by $0c) takes 5 cycles. $0c needs only 4 cycles, so -1 + 5 = 4. :-) It just makes it easier to calculate the total number of cycles. Have fun! Thomas _______________________________________________________ Thomas Jentzsch | *** Every bit is sacred ! *** tjentzsch at web dot de | ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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