From alsa-devel-owner@alsa.jcu.cz  Mon Jul 13 16:53:02 1998
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	Mon, 13 Jul 1998 16:48:15 +0200
Date: Mon, 13 Jul 1998 16:48:15 +0200 (MET DST)
From: Jaroslav Kysela <perex@jcu.cz>
To: "P.J.Leonard" <P.J.Leonard@bath.ac.uk>
cc: alsa-devel@jcu.cz
Subject: Re: ALSA Sequencer
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On Fri, 10 Jul 1998, P.J.Leonard wrote:

>  I could go to LINUX 2.1 myself or it may be useful if I stay 
> at 2.0.27  (or shortly 2.0.34) to do compatibility tests ?
> Still to try out you latest test code. I presume this will 
> work with my AWE32 through the external midi ?

Note: I have still trouble with MPU-401 UARTs and compatible (this
includes all SB16/AWE soundcards). I don't know how can solve problem
with polled transmit (this means that CPU must wait if some room is in
transmit FIFO and after this send MIDI byte - no transmit interrupts are
generated). Looks that SB AWE 64 have only room for 2 bytes in transmit
FIFO!!! This is very small value and ALSA driver is able send with current
implementation (system timer is used) only 200 bytes per second on
i386 and 2048 bytes on alpha.

The problem maybe solved with some high-rate timer, but seems that SB16
doesn't have any timer connected (problem for .

Any ideas are welcome...

						Jaroslav

-----
Jaroslav Kysela <perex@jcu.cz>
Academic Computer Centre, University of South Bohemia
Branisovska 31, C. Budejovice, CZ-370 05 Czech Republic



