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Atari coding BBS
| Re: optimize me! |
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Posted by: Alien / ST-CNX
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Apr,15.2010-04:48
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Assuming the code were in Assembler, on a 68000 one would dedicate a register to the task and do something like:
<code>
jmp (a0)+ or jmp -(a0)
(It's been a while). This avoids writing to the stack, and the set of transitions are all written to a tablen. But as pointed out earlier, you really need to start with 68000 for all your subroutines.
IIRC, I did something like this for a Z80 emulator on the ST... I think I put it all in the lower 64Kb so that I could do a jmp.w and simply load 2 bytes instead of 4, but it's so long ago I'm no longer sure.
Alternatively you can simply push the table to the stack, and then return from each routine.
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Topic
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Posted by
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Date
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optimize me!
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PeP
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Mar,11.2010-00:55
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Re: optimize me!
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PeP
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Mar,11.2010-01:28
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Re: optimize me!
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mikro
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Mar,11.2010-10:09
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Re: optimize me!
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sqward
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Mar,11.2010-11:58
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Re: optimize me!
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PeP
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Mar,11.2010-14:32
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Re: optimize me!
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PeP
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Mar,11.2010-14:31
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Re: optimize me!
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PeP
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Mar,11.2010-14:44
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Re: optimize me!
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sqward
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Mar,11.2010-15:50
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Re: optimize me!
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PeP
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Mar,11.2010-16:05
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Re: optimize me!
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Alien / ST-CNX
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Apr,15.2010-04:48
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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