Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!winnie!zach!rcs89301
From: rcs89301@zach.fit.edu ( Thomas E. Currey)
Newsgroups: comp.unix.wizards
Subject: Sun 386i device driver help (A/D Converter)
Keywords: Analog Digital Device Driver
Message-ID: <787@winnie.fit.edu>
Date: 16 Feb 90 16:07:26 GMT
Sender: usenet@winnie.fit.edu
Reply-To: rcs89301@zach.fit.edu ( Thomas E. Currey, Project Leader)
Organization: FIT R/M/T Study
Lines: 19


  I am currently in need of some help involving writing a device
driver for a Sun 386i. I am using the AT-Bus.  The systme will
have a DAC0808 or DAC0809 Conversion dip.  This dip requires 100 micro
seconds to process the analog input.  I want to use software to
control the sampling time for this system.  This chip can 
send an interrupt to the software.  This system takes 4 types of 
audio inputs: Low-Pass, Band-Pass, High-Pass filter mono signal
from any audio source, and also and unfiltered signal.  This 
will be a simular system to the SparcStation Sound system as far as
data formatting. 

  Any help on addressing, interrupts, hardware, software, kernel
configuration, or anything else would be greatly appreciated. I am
currently using the "Writing Device Drivers" Manual from Sun as a guide.


			Thanks
			 Tom Currey