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snd-ESS-3-stable-199..> 11-May-1999 09:15 78k
EES sound chip Sound Driver
$Id: README.ESS,v 1.8 1999/05/11 06:12:41 sanpei Exp $
Our Goal:
This patch has some miner problems as below. We
hope to fix these and at last we merge to pcm driver.
Contact:
MIHIRA Yoshiro sanpei@sanpei.org, sanpei@jp.freebsd.org
Driver developer:
KUROSAWA Takahiro <fwkg7679@mb.infoweb.ne.jp>
Hideki SAKAMOTO <sakamoto@hlla.is.tsukuba.ac.jp>
Latest driver:
http://home.jp.freebsd.org/~sanpei/
Supported NOTE-PCs which use ESS Sound Chip:
Sotec WinBookPro ESS688
Toshiba Satellite Pro 430CDT
ESS688
DEC HiNote Ultra II CTS-5100
DEC HiNote Ultra II CTS-5120
ESS1688
IBM ThinkPad 560,E,X ESS1688
Hyperbook 750+ ESS1868
Compaq DeskPro ESS1869
NEC MobioNX ESS1869
FM/V Biblo NP/W ESS1878
Sony VAIO-505 ESS1878
SONY VAIO PCG-707 ESS1878
Sony VAIO-505R*,S* ESS1879S
SONY VAIO PCG-803 ESS1879
FM-V Biblo NC313 ESS1879
Chandra2 ESS1879
Sharp MN-5500 ESS1887
IBM ThinkPad 535(Model 2606-EF8)
(only for ESS mode, not MWave model)
(your report are welcome)
Current Status:
This driver support up to 44KHz/16bit mode. And
fixed problem that sound only come out from left
channel, buggy mixer.
Example:
mpg123 -v mp3_filename
Old pcm and sb driver:
Audio: 2:1 conversion, rate: 22050, encoding: unsigned 8 bit, channels: 2
~~~~~ ~~~~~
This driver:
Audio: 1:1 conversion, rate: 44100, encoding: signed 16 bit, channels: 2
~~~~~ ~~~~~~
Current Problem:
Some time (CPU was heavy load?), sound change to white
noise.
And also with using mpg123 player and selected some files,
when one file is ended and change to another file,
also sound change to white noise...
DATA SHEETS:
ftp://ftp.esstech.com.tw/Document/
or
http://alsa.jcu.cz/alsa/ftp/manuals/ess/
Thanks to all users who use this driver and report problems.