From mboxrd@z Thu Jan 1 00:00:00 1970 From: fmoraes@nc.rr.com Subject: emu10k1x/AudigyLS period table Date: Mon, 28 Jun 2004 22:49:43 -0400 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <1e6ff561e6a898.1e6a8981e6ff56@southeast.rr.com> Reply-To: fmoraes@nc.rr.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7BIT Return-path: Content-language: en Content-Disposition: inline Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org This the information that James Courtier-Dutton found about the AudigyLS that also works for the emu10k1x: #define PLAYBACK_LIST_ADDR 0x00 /* Base DMA address of a list of pointers to each period/size */ /* One list entry: 4 bytes for DMA address, * 4 bytes for period_size << 16. * One list entry is 8 bytes long. * One list entry for each period in the buffer. */ #define PLAYBACK_LIST_SIZE 0x01 /* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000 */ #define PLAYBACK_LIST_PTR 0x02 /* Pointer to the current period being played */ Is this in anyway similar to the emu10k1 PTB scatter-gather? Just wondering if they reused the design. Francisco ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com