From owner-freebsd-multimedia Sun Apr 4 20:35:26 1999 Delivered-To: freebsd-multimedia@freebsd.org Received: from gate.ascend.co.jp (gate.ascend.co.jp [202.246.11.253]) by hub.freebsd.org (Postfix) with ESMTP id E259214F13 for ; Sun, 4 Apr 1999 20:35:19 -0700 (PDT) (envelope-from mshindo@ascend.co.jp) Received: from home.ascend.co.jp (home.ascend.co.jp [202.246.11.1]) by gate.ascend.co.jp (8.9.1a/3.7W/12/06/98) with ESMTP id MAA29766; Mon, 5 Apr 1999 12:33:08 +0900 (JST) Received: from aries.ascend.co.jp (aries.ascend.co.jp [202.246.11.64]) by home.ascend.co.jp (8.8.8/3.7W/12/07/98) with ESMTP id MAA29272; Mon, 5 Apr 1999 12:33:08 +0900 (JST) Received: from localhost (localhost [127.0.0.1]) by aries.ascend.co.jp (8.8.8/3.7W/12/07/98) with ESMTP id MAA13100; Mon, 5 Apr 1999 12:33:07 +0900 (JST) To: dkelly@hiwaay.net Cc: luigi@labinfo.iet.unipi.it, freebsd-multimedia@FreeBSD.ORG Subject: Re: Luigi's driver, AOpen AW37, and me. From: Motonori Shindo In-Reply-To: <199904050236.VAA00828@nospam.hiwaay.net> References: <199904050236.VAA00828@nospam.hiwaay.net> X-Mailer: Mew version 1.94b2 on XEmacs 20.4 (Emerald) X-PGP-fingerprint: 06 B0 B1 A4 06 C1 6A 14 63 C0 D7 18 01 CD D9 83 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <19990405123305Y.mshindo@ascend.co.jp> Date: Mon, 05 Apr 1999 12:33:05 +0900 X-Dispatcher: imput version 981124(IM104) Lines: 71 Sender: owner-freebsd-multimedia@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi, From: David Kelly Subject: Re: Luigi's driver, AOpen AW37, and me. Date: Sun, 04 Apr 1999 21:36:05 -0500 > Believe others have reported the -Pro worked. I have the not-Pro. The > Pro uses the CS4237 while mine uses a CX4235-XQ3 EP (this is the first > time I bothered to read the exact numbers off the chip). Both AW37 and AW37Pro use CS4235. Please refer to http://www.aopenusa.com/index5.htm I also confirmed this by actually looking at the card I bought. It was CS4235-XQ3 EP, indeed. > The reason I was able just now to read the numbers directly off the chip > is the AOpen card is out, a $14 Yamaha 714 card is in, and FreeBSD now > makes recognizable noises. But when not making those noises it cranks > out static from internal noises in the cheap card and computer power > supply. > > Have cleaned up things here so I don't have my printed copies of the > Crystal Semiconductor manuals handy where my notes are. Suspected > several things. One is a calibration proceedure spec'ed by CS. At first > I thought the PCM driver didn't implement it. Then I found code > resembling what was spec'ed, almost. I don't believe it was doing what > the CS book said needed done even if it was really trying to calibrate > rather then the quickie no-calibrate initialization. I hacked in a > replacement, which did no good either. > > Another thing I worried about is whether bytes were being written in the > right order. Or the CODEC on the card was not initialized correctly. > Didn't seem to matter much if files were pushed thru /dev/audio or > /dev/dsp, they both sounded the same. > > Don't remember if I had a mic to try "cat < /dev/audio > /dev/audio". I did this but nothing happened. > With that in mind my next planned attack was to take a signal generator > and capture a known sine and square wave input, and examine the raw > data captured. Also to output known sine and square wave output and > view on my DSO. For several reasons, never got around to it. Not the > least of the reasons is this place is too much of a mess to get the DSO > and signal generators near the computer. If you find anything new, please let me know. I will start reading the datasheet. > -- > David Kelly N4HHE, dkelly@nospam.hiwaay.net > ===================================================================== > The human mind ordinarily operates at only ten percent of its > capacity -- the rest is overhead for the operating system. > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-multimedia" in the body of the message > ===================================== Motonori Shindo Systems Engineer Ascend Communications Japan K.K. email: mshindo@ascend.co.jp TEL: +81-3-5325-7306 ===================================== To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message