README.awe
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- ================================================================
- AWE32 Sound Driver for Linux / FreeBSD
- version 0.4.3; Nov. 1, 1998
- Takashi Iwai <iwai@ww.uni-erlangen.de>
- ================================================================
- * GENERAL NOTES
- This is a sound driver extension for SoundBlaster AWE32 and other
- compatible cards (AWE32-PnP, SB32, SB32-PnP, AWE64 & etc) to enable
- the wave synth operations. The driver is provided for Linux 1.2.x
- and 2.[012].x kernels, as well as FreeBSD, on Intel x86 and DEC
- Alpha systems.
- This driver was written by Takashi Iwai <iwai@ww.uni-erlangen.de>,
- and provided "as is". The original source (awedrv-0.4.3.tar.gz) and
- binary packages are available on the following URL:
- http://bahamut.mm.t.u-tokyo.ac.jp/~iwai/awedrv/
- Note that since the author is apart from this web site, the update is
- not frequent now.
- * NOTE TO LINUX USERS
- To enable this driver on linux-2.[01].x kernels, you need turn on
- "AWE32 synth" options in sound menu when configure your linux kernel
- and modules. The precise installation procedure is described in the
- AWE64-Mini-HOWTO and linux-kernel/Documetation/sound/AWE32.
- If you're using PnP cards, the card must be initialized before loading
- the sound driver. There're several options to do this:
- - Initialize the card via ISA PnP tools, and load the sound module.
- - Initialize the card on DOS, and load linux by loadlin.exe
- - Use PnP kernel driver (for Linux-2.x.x)
- The detailed instruction for the solution using isapnp tools is found
- in many documents like above. A brief instruction is also included in
- the installation document of this package.
- For PnP driver project, please refer to the following URL:
- http://www-jcr.lmh.ox.ac.uk/~pnp/
- * USING THE DRIVER
- The awedrv has several different playing modes to realize easy channel
- allocation for MIDI songs. To hear the exact sound quality, you need
- to obtain the extended sequencer program, drvmidi or playmidi-2.5.
- For playing MIDI files, you *MUST* load the soundfont file on the
- driver previously by sfxload utility. Otherwise you'll here no sounds
- at all! All the utilities and driver source packages are found in the
- above URL. The sfxload program is included in the package
- awesfx-0.4.3.tgz. Binary packages are available there, too. See the
- instruction in each package for installation.
- Loading a soundfont file is very simple. Just execute the command
- % sfxload synthgm.sbk
- Then, sfxload transfers the file "synthgm.sbk" to the driver.
- Both SF1 and SF2 formats are accepted.
- Now you can hear midi musics by a midi player.
- % drvmidi foo.mid
- If you run MIDI player after MOD player, you need to load soundfont
- files again, since MOD player programs clear the previous loaded
- samples by their own data.
- If you have only 512kb on the sound card, I recommend to use dynamic
- sample loading via -L option of drvmidi. 2MB GM/GS soundfont file is
- available in most midi files.
- % sfxload synthgm
- % drvmidi -L 2mbgmgs foo.mid
- This makes a big difference (believe me)! For more details, please
- refer to the FAQ list which is available on the URL above.
- The current chorus, reverb and equalizer status can be changed by
- aweset utility program (included in awesfx package). Note that
- some awedrv-native programs (like drvmidi and xmp) will change the
- current settings by themselves. The aweset program is effective
- only for other programs like playmidi.
- Enjoy.
- * COMPILE FLAGS
- Compile conditions are defined in awe_config.h.
- [Compatibility Conditions]
- The following flags are defined automatically when using installation
- shell script.
- - AWE_MODULE_SUPPORT
- indicates your Linux kernel supports module for each sound card
- (in recent 2.1 or 2.2 kernels and unofficial patched 2.0 kernels
- as distributed in the RH5.0 package).
- This flag is automatically set when you're using 2.1.x kernels.
- You can pass the base address and memory size via the following
- module options,
- io = base I/O port address (eg. 0x620)
- memsize = DRAM size in kilobytes (eg. 512)
- As default, AWE driver probes these values automatically.
- [Hardware Conditions]
- You DON'T have to define the following two values.
- Define them only when the driver couldn't detect the card properly.
- - AWE_DEFAULT_BASE_ADDR (default: not defined)
- specifies the base port address of your AWE32 card.
- 0 means to autodetect the address.
- - AWE_DEFAULT_MEM_SIZE (default: not defined)
- specifies the memory size of your AWE32 card in kilobytes.
- -1 means to autodetect its size.
-
- [Sample Table Size]
- From ver.0.4.0, sample tables are allocated dynamically (except
- Linux-1.2.x system), so you need NOT to touch these parameters.
- Linux-1.2.x users may need to increase these values to appropriate size
- if the sound card is equipped with more DRAM.
- - AWE_MAX_SF_LISTS, AWE_MAX_SAMPLES, AWE_MAX_INFOS
- [Other Conditions]
- - AWE_ALWAYS_INIT_FM (default: not defined)
- indicates the AWE driver always initialize FM passthrough even
- without DRAM on board. Emu8000 chip has a restriction for playing
- samples on DRAM that at least two channels must be occupied as
- passthrough channels.
- - AWE_DEBUG_ON (default: defined)
- turns on debugging messages if defined.
- - AWE_HAS_GUS_COMPATIBILITY (default: defined)
- Enables GUS compatibility mode if defined, reading GUS patches and
- GUS control commands. Define this option to use GMOD or other
- GUS module players.
- - CONFIG_AWE32_MIDIEMU (default: defined)
- Adds a MIDI emulation device by Emu8000 wavetable. The emulation
- device can be accessed as an external MIDI, and sends the MIDI
- control codes directly. XG and GS sysex/NRPN are accepted.
- No MIDI input is supported.
- - CONFIG_AWE32_MIXER (default: not defined)
- Adds a mixer device for AWE32 bass/treble equalizer control.
- You can access this device using /dev/mixer?? (usually mixer01).
- - AWE_USE_NEW_VOLUME_CALC (default: defined)
- Use the new method to calculate the volume change as compatible
- with DOS/Win drivers. This option can be toggled via aweset
- program, or drvmidi player.
- - AWE_CHECK_VTARGET (default: defined)
- Check the current volume target value when searching for an
- empty channel to allocate a new voice. This is experimentally
- implemented in this version. (probably, this option doesn't
- affect the sound quality severely...)
- - AWE_ALLOW_SAMPLE_SHARING (default: defined)
- Allow sample sharing for differently loaded patches.
- This function is available only together with awesfx-0.4.3p3.
- Note that this is still an experimental option.
- - DEF_FM_CHORUS_DEPTH (default: 0x10)
- The default strength to be sent to the chorus effect engine.
- From 0 to 0xff. Larger numbers may often cause weird sounds.
- - DEF_FM_REVERB_DEPTH (default: 0x10)
- The default strength to be sent to the reverb effect engine.
- From 0 to 0xff. Larger numbers may often cause weird sounds.
- * ACKNOWLEDGMENTS
- Thanks to Witold Jachimczyk (witek@xfactor.wpi.edu) for much advice
- on programming of AWE32. Much code is brought from his AWE32-native
- MOD player, ALMP.
- The port of awedrv to FreeBSD is done by Randall Hopper
- (rhh@ct.picker.com).
- The new volume calculation routine was derived from Mark Weaver's
- ADIP compatible routines.
- I also thank linux-awe-ml members for their efforts
- to reboot their system many times :-)
- * TODO'S
- - Complete DOS/Win compatibility
- - DSP-like output
- * COPYRIGHT
- Copyright (C) 1996-1998 Takashi Iwai
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.