Re: 8032 music

From: fachat (
Date: 2004-12-27 21:30:23


There are two staring points I can think of:
disassemble (or use the disassembed versions of)
the PET4 ROMs to find the use of the "bell".
Maybe track down the output of the bell character
from $FFD2.

The one is to read the source of my GeckOS operating 
system where I have similar routines to "ring the bell"., d/l
the "oa-2.0.0.tar.gz" archive look into arch/pet/32k/devices
in the file kbd_pet.a65.


On Mon, Dec 27, 2004 at 02:06:39PM -0700, Rich wrote:
> Hi,
> I recently acquired an 8032 and I'm looking for some code to drive the
> peizo speaker with the VIA chip.  Does anyone have a good starting
> point?  From what I've been able to determine you use the shift
> register functionality on the VIA to drive the piezo speaker.  I'm
> guessing that you'd have a periodic interrupt routine to change the
> shift register data/control in order to play the melody.  Am I on the
> right track?
> Thanks!
> -- 
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