From: fachat (afachat_at_gmx.de)
Date: 2004-12-27 21:30:23
Hi, 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". http://www.6502.org/users/andre/osa/index.html, d/l the "oa-2.0.0.tar.gz" archive look into arch/pet/32k/devices in the file kbd_pet.a65. Andre 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! > -- > "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: > <http://www.xmission.com/~legalize/book/> > Pilgrimage: Utah's annual demoparty > <http://pilgrimage.scene.org> > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list
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