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Re: Looking For - 65x02 CPU Simulator Demo!
xorxif wrote:
Mark Percival wrote:
Doug Mitton <doug_mitton@hotmail.x.com> wrote:
Zouplaz <user@domain.invalid> wrote:
I remember it quite well... The graphic design was very clean and
when the cpu was running, I remember kind of "sparks" running on the
data lines (eg. from X register to A)
Unfortunately I don't remember the name, sorry.
Yes, that sounds like exactly the one and the graphics were very
clean. I remember the data running down the pipe "like a snake eating
a rodent"! :-) The MECC clue from Kirk is one I'll look into as
well.
How about
http://www.umich.edu/~archive/apple2/8bit/programmer/sim6502.bsc ?
I think this might be what you are looking for.
-- Mark
I wanted to see it too, it sounded interesting. After putting it on a
disk image, I found that in fact, it IS interesting! Fascinating in
fact... just to watch... so hypnotic...
Well anyway, I uploaded the image to Asimov:
Apple6502.zip 12.2K
It's a DOS 3.3 disk. The file is easily extracted into any other kind of
disk you might want.
I know Asimov is slow to transfer stuff to unsorted, so if anyone wants
to get their hands on it faster, just let me know where to upload it.
I also took a look at it. I have a distant memory of seeing it
years ago.
The animation effect is nice, but I found myself wanting a single step
mode, or at least a signal when one operation was complete and another
was about to be fetched. And, for accelerated machines, or just in
general, a speed control would be nice.
It would be fun to extend this design to show the *actual* data flows
on a real 6502, so that, among other things, it would be apparent
why indexed stores require an extra execution cycle because of data
path conflict.
I've never been very interested in games, but this program makes
be interested in reverse-engineering its animation... ;-)
Because it uses thin vertical graphical features, it looks much
better on a monochrome monitor.
-michael
Music synthesis for 8-bit Apple II's!
Home page: http://members.aol.com/MJMahon/
"The wastebasket is our most important design
tool--and it is seriously underused."