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SubjectRe: Some 68k questions Reply to this message
Posted byfinaldave
Posted on08/04/04 05:42 AM

> I'm trying to write an 68k emulator and I'm wondering about a few things.
> * Is there any reference available where I can find how many cycles the
> instructions take? I couldn't find it in the motorola programmer's reference.
> Can I cheat here a bit?

I'd quite like to know this as well, since I end up scraping together bits and pieces!

> * Since I want to use it primarily for arcade emulation, are there some things
> in the 68k which are almost never used (so I can make life a bit easier at first
> :-) ?
> * What is a good arcade game to start with, so a simple to emulate yet fun
> machine? So that I won't have to torture myself trying to get Galaxy Force to
> show anything, you know... :-)

I'd actually start with a console game instead: Sonic the Hedgehog on the MD is quite easy to get up and running.
If it's has to be an arcade game, TMNT was fairly straightforward in retrospect. Or maybe CPS1?

> Thanks,
> Erik

You learn something old everyday...

Entire Thread
Subject  Posted byPosted On
*Some 68k questions  erikduijs08/03/04 10:55 AM
..Re: Some 68k questions  finaldave08/04/04 05:42 AM
..*Here's another link that might be helpful  erikduijs08/13/04 07:31 PM
..*Re: Link to user manual with timing info  Jan_Klaassen08/04/04 12:21 PM
...*Re: Link to user manual with timing info  finaldave08/05/04 05:32 AM
.*oh my gawd...  erikduijs08/04/04 03:29 AM
..*Re: oh my gawd...  Bart T.08/04/04 10:44 AM
...*Re: oh my gawd...  erikduijs08/04/04 06:00 PM
....*Re: oh my gawd...  R. Belmont08/05/04 11:09 PM
.....*Re: oh my gawd...  erikduijs08/08/04 05:57 PM
.*Re: Some 68k questions  Jan_Klaassen08/03/04 02:13 PM
..*Re: Some 68k questions  Bart T.08/03/04 02:23 PM
...*Re: Some 68k questions  R. Belmont08/03/04 07:35 PM
....*Re: Some 68k questions  Riff08/04/04 03:16 PM
.....*Re: Some 68k questions  finaldave08/05/04 05:43 AM
....*Re: Some 68k questions  ElSemi08/04/04 05:11 AM
.....*Re: Some 68k questions  R. Belmont08/04/04 06:42 PM
.....*Re: Some 68k questions  erikduijs08/04/04 05:48 AM
....*Re: Some 68k questions  erikduijs08/04/04 03:05 AM