[sdiy] Amiga computer parts for Synth-DIY?

[Theo]

For what I know Paula is a semi stand alone MOD player chip, it needs the
processor but does a lot on its own.
There is loads of info about programming Paula in various Amiga handbooks.
Some handbooks get quite deep into how the hardware works too, especially
when this is related to the interrupt handlers like in Paula's case.

To see how to hook Paula up you might check the Amica circuit diagrams.
Its used as 68000 periphery so probably the timing is compatible with 68000.

If memory serves the 8520 is a cmos 6520, a parallel interface (PIA)

Theo


From: Andrew Martens <amartens at interchange.ubc.ca>


> > Here are numbers from some of the large chips:
> >
> >   MOS 8361R5
> >   MOS 8362R6
> >   MOS 8364R4
> >   MOS 8520A-1
>
> I know that the 8364 chip is the 'Paula', which did sound, as well as
floppy
> and joystick I/O (I believe) - that's probably the only useful one there.
I
> have a pinout for it, but unfortunately that's about it, other than this:
>
> Features :
> * Four voice of sound output configured as two stereo channels
> * Nine octaves
> * Complex waveforms
> * Uses both amplitude and frequency modulation
> * I/O controls for disk data and controller ports
> * Microdisk controler
> * Interrupt control system
>
> If you want, I can send you the pinout (with a vague description of what
> each pin does)... I may have more info tucked away somewhere.  Was
> previously considering using the Paula to do a synth project, but I've
since
> decided to just finish off my SID module first, and then build a
> micromodular.  Let me know if you're interested in more data, and I'll see
> what I have stashed away on my HD.
>
> Cheers,
> Andrew Martens
>