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Old 22 September 2017, 21:44   #1
oRBIT
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68020+ instruction timings?

I've been started to dig around in my old code and I've used some 020+ specific code. I am interested how these stuff perform but the instruction timing-charts I've come across through google haven't helped me much.
How about this for example (snippets from my NES-emulator):
move.b ([BankLo],d0.l,-$8000.l),d2
or
jsr ([Writetable,d0.l*4])

Is there a really good (and human readable) 68020+ instructiontiming-chart somewhere I've not found yet?
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Old 23 September 2017, 10:17   #2
meynaf
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You may try this :
http://oldwww.nvg.ntnu.no/amiga/MC68...ons/index.HTML

Check 68030 timings there, it gives details about all addressing modes.
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Old 23 September 2017, 12:21   #3
Leffmann
 
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Motorola's own MC68020 User's Manual has everything:

https://www.dropbox.com/s/7wpf4f92irhudsn/MC68020UM.pdf?dl=1
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Old 23 September 2017, 12:38   #4
dissident
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Quote:
Originally Posted by oRBIT View Post
I've been started to dig around in my old code and I've used some 020+ specific code. I am interested how these stuff perform but the instruction timing-charts I've come across through google haven't helped me much.
How about this for example (snippets from my NES-emulator):
move.b ([BankLo],d0.l,-$8000.l),d2
or
jsr ([Writetable,d0.l*4])

Is there a really good (and human readable) 68020+ instructiontiming-chart somewhere I've not found yet?
In some cases it might be useful to get some infos straight from the horses mouth:

MC68020 MC68EC020 MICROPROCESSORS USER'S MANUAL
https://www.nxp.com/docs/en/data-sheet/MC68020UM.pdf

MC68030 ENHANCED 32-BIT MICROPROCESSOR USER'S MANUAL
https://cache.nxp.com/docs/en/refere...sr=4&pageNum=1

MC68040 User's Manual Including the MC68040, MC68040V, MC68LC040,MC68EC040 and MC68EC040V
https://cache.nxp.com/docs/en/reference-manual/MC68040UM.pdf?fsrch=1&sr=10&pageNum=1

MC68060 User's Manual Including the MC68060, MC68LC060, and MC68EC060
https://cache.nxp.com/docs/en/data-s...sr=5&pageNum=1

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