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529 lines
10 KiB
529 lines
10 KiB
4 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML
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><HEAD
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><TITLE
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>Sound Blaster 16 Emulation</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
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REL="HOME"
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TITLE="Bochs User Manual"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Setup"
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HREF="setup.html"><LINK
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REL="PREVIOUS"
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TITLE="bochsrc"
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HREF="bochsrc.html"><LINK
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REL="NEXT"
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TITLE="How to write your own keymap table"
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HREF="keymap.html"></HEAD
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><BODY
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CLASS="SECTION"
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BGCOLOR="#FFFFFF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Bochs User Manual</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="bochsrc.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 4. Setup</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="keymap.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECTION"
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><H1
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CLASS="SECTION"
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><A
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NAME="SB16-EMULATION"
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>4.3. Sound Blaster 16 Emulation</A
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></H1
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><P
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>This section is a detailed description for configuring Sound Blaster 16 from
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source. If you have a binary and all you want to know is what to put in your
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<TT
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CLASS="FILENAME"
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>bochsrc</TT
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> file, see <A
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HREF="bochsrc.html#SB16LINE"
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>sb16 option</A
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>.</P
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><P
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>Sound Blaster 16 (SB16) emulation for Bochs was written and donated by
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Josef Drexler, who has a
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<A
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HREF="http://publish.uwo.ca/~jdrexler/bochs/"
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TARGET="_top"
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>web page</A
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> on the topic.
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The entire set of his SB16 patches have been integrated into
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Bochs, however, so you can find everything you need here.</P
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><P
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>SB16 Emulation has been tested with several soundcards and versions of Linux. Please give
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Josef <A
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HREF="mailto:jdrexler@julian.uwo.ca"
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TARGET="_top"
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>feedback</A
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> on
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whether is does or doesn't work on your combination of software and hardware.</P
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><DIV
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CLASS="SECTION"
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><H2
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CLASS="SECTION"
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><A
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NAME="AEN1942"
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>4.3.1. How well does it work?</A
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></H2
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><P
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>Right now, MPU401 emulation is next to perfect. It supports UART
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and SBMIDI mode, because the SB16's MPU401 ports can't do anything else as well.</P
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><P
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>The digital audio basically works, but the emulation is too slow for fluent
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output unless the application doesn't do much in the background (or the
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foreground, really). The sound tends to looping or crackle on slower
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computer, but the emulation appears to be correct. Even a MOD
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player works, although only for lower sampling speeds.</P
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><P
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>Also, the MIDI data running through the MPU401 ports can be written
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into a SMF, that is the standard midi file. The wave output
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can be written into a VOC file, which has a format defined by
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Creative Labs. This file format can be converted to WAV by
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sox for example.</P
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></DIV
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><DIV
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CLASS="SECTION"
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><H2
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CLASS="SECTION"
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><A
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NAME="AEN1947"
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>4.3.2. Output to a sound card</A
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></H2
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><P
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>Output is supported on Windows, Linux, FreeBSD, MacOS 9 and MacOSX at the moment.</P
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><P
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>On Linux, the output goes to any file or device. If you have a wavetable synthesizer,
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midi can go to <TT
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CLASS="FILENAME"
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>/dev/midi00</TT
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>, otherwise you may need
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a midi interpreter. For example, the midid program from the DosEmu project would work.
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Wave output should go to <TT
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CLASS="FILENAME"
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>/dev/dsp</TT
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>. These devices
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are assumed to be OSS devices, if they're not some of the ioctl's might fail.</P
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><P
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>On Windows, midi and (wave) output go to the midi mapper and the wave mapper,
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respectively. A future version might have selectable output devices.</P
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></DIV
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><DIV
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CLASS="SECTION"
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><H2
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CLASS="SECTION"
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><A
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NAME="AEN1954"
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>4.3.3. Installation on Linux</A
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></H2
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><DIV
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CLASS="SECTION"
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><H3
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CLASS="SECTION"
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><A
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NAME="AEN1956"
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>4.3.3.1. Prerequisites</A
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></H3
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><P
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>A wavetable synthesizer on <TT
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CLASS="FILENAME"
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>/dev/midi00</TT
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>
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and a working <TT
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CLASS="FILENAME"
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>/dev/dsp</TT
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> if you want real
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time music and sound, otherwise output to midi and wave files is also possible.
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Optionally, you can use a software midi interpreter, such as the midid program
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from the DosEmu project instead of <TT
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CLASS="FILENAME"
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>/dev/midi00</TT
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>.</P
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></DIV
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><DIV
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CLASS="SECTION"
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><H3
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CLASS="SECTION"
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><A
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NAME="AEN1962"
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>4.3.3.2. Configuring Bochs</A
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></H3
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><P
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>You need to <B
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CLASS="COMMAND"
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>configure</B
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> Bochs using the <CODE
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CLASS="OPTION"
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>--enable-sb16</CODE
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>
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option.
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There are a few values in <TT
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CLASS="FILENAME"
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>config.h</TT
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> that are relevant to the sound functions.
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Edit <TT
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CLASS="FILENAME"
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>config.h</TT
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> after running configure, but before compiling.</P
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><P
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>BX_USE_SB16_SMF should be 1 unless you intend to have several sound cards
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running at the same time.</P
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><P
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>BX_USE_SOUND_VIRTUAL can be 0 or 1, and determines whether the output class
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uses virtual functions or not. The former is more versatile and allows to
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select the class at runtime (not supported at the moment), while the latter
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is slightly faster.</P
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><P
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>BX_SOUND_OUTPUT_C is the name of the class used for output. The default is
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to have no output functions, so you need to change this if you want any sound.
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The following are supported at the moment:</P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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> bx_sound_linux_c for output to /dev/dsp and /dev/midi00 on Linux
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(and maybe other OSes that use the OSS driver)
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bx_sound_windows_c for output to the midi and wave mapper of
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Windows 3.1 and higher.
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bx_sound_output_c for no output at all.</PRE
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></TD
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></TR
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></TABLE
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><P
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>Setup the SB16 emulation in your <TT
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CLASS="FILENAME"
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>bochsrc</TT
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>, according to instructions
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in that file (see <A
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HREF="bochsrc.html#SB16LINE"
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>sb16 option</A
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>).</P
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></DIV
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><DIV
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CLASS="SECTION"
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><H3
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CLASS="SECTION"
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><A
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NAME="AEN1976"
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>4.3.3.3. Runtime configuration</A
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></H3
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><P
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>The source for the SB16CTRL program that is used to modify
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the runtime behaviour of the SB16 emulation is included in
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<TT
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CLASS="FILENAME"
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>misc/sb16/</TT
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>. It is a C
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program that can be run from inside the emulation.</P
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><P
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>It currently supports the following commands:</P
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN1981"
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></A
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><P
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><B
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>Table 4-5. Supported options for <B
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CLASS="COMMAND"
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>sb16ctl</B
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></B
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></P
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><TABLE
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BORDER="1"
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CLASS="CALSTABLE"
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><COL><COL><THEAD
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><TR
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><TH
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>Option</TH
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><TH
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>Description</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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><CODE
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CLASS="OPTION"
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>-i <TT
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CLASS="REPLACEABLE"
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><I
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>number</I
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></TT
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></CODE
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></TD
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><TD
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> Show the selected emulator info string,
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e.g. <B
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CLASS="COMMAND"
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>sb16ctrl -i 3</B
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> to show how many patch translations are active.
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</TD
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></TR
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><TR
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><TD
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><CODE
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CLASS="OPTION"
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>-t <TT
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CLASS="REPLACEABLE"
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><I
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>six numbers</I
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></TT
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></CODE
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></TD
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><TD
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> Load a translation into the translation table. The numbers are:
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"OldBankMSB,OldBankLSB,OldProgram,NewBankMSB,NewBankLSB,NewProgram".
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All values can be 0..127 or 255. 255 for "Old" values means <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>match
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any</I
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></SPAN
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> and for "New" values means <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>don't change</I
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></SPAN
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>,
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e.g. <B
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CLASS="COMMAND"
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>sb16ctrl -t 255,255,0,255,255,32</B
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>
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to change patch 0 (Piano) to patch 32 (Acoustic Bass).
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</TD
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></TR
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><TR
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><TD
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><CODE
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CLASS="OPTION"
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>-r</CODE
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></TD
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><TD
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> Reset the patch translation table e.g. <B
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CLASS="COMMAND"
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>sb16ctrl -r</B
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>.
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</TD
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||
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></TR
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||
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><TR
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><TD
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||
|
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><CODE
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||
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CLASS="OPTION"
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||
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>-m <TT
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CLASS="REPLACEABLE"
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||
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><I
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>some numbers</I
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></TT
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></CODE
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||
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></TD
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||
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><TD
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||
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> Upload the given numbers to the midi output device. Note
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that it should be a complete midi message, and also that it is
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subject to patch translation,
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e.g. <B
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CLASS="COMMAND"
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>sb16ctrl -m 0x80,64,0</B
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>
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to send a note-off message to channel 0.
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||
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</TD
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||
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></TR
|
||
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><TR
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||
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><TD
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||
|
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><CODE
|
||
|
|
CLASS="OPTION"
|
||
|
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>-f <TT
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||
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CLASS="REPLACEABLE"
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||
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><I
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>filename</I
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></TT
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||
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></CODE
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||
|
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></TD
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||
|
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><TD
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||
|
|
> Read in a file and execute the commands in it. These have
|
||
|
|
the same format as the above commands, except that they don't have
|
||
|
|
the dash "-" in front of them.
|
||
|
|
Comment lines are supported and start with a hash sign "#".
|
||
|
|
</TD
|
||
|
|
></TR
|
||
|
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><TR
|
||
|
|
><TD
|
||
|
|
><CODE
|
||
|
|
CLASS="OPTION"
|
||
|
|
>-h</CODE
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
> Show a brief summary of the commands.
|
||
|
|
</TD
|
||
|
|
></TR
|
||
|
|
></TBODY
|
||
|
|
></TABLE
|
||
|
|
></DIV
|
||
|
|
><P
|
||
|
|
>All numbers can be valid parameters to the <CODE
|
||
|
|
CLASS="FUNCTION"
|
||
|
|
>strtol()</CODE
|
||
|
|
> function, so hex and
|
||
|
|
octal notation is fine. They have to be delimited by either commas "," or
|
||
|
|
slashes "/", spaces are not allowed.</P
|
||
|
|
><P
|
||
|
|
>The command line can have any number of commands. However, if none are given,
|
||
|
|
"-f -" is assumed, which means commands are taken from stdin.</P
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="SECTION"
|
||
|
|
><H2
|
||
|
|
CLASS="SECTION"
|
||
|
|
><A
|
||
|
|
NAME="AEN2027"
|
||
|
|
>4.3.4. Features planned for the future</A
|
||
|
|
></H2
|
||
|
|
><P
|
||
|
|
></P
|
||
|
|
><UL
|
||
|
|
><LI
|
||
|
|
><P
|
||
|
|
>Port it to more OS's, but I can't do this myself.</P
|
||
|
|
></LI
|
||
|
|
><LI
|
||
|
|
><P
|
||
|
|
>Finish the OPL3 FM emulation by translating the music to midi data.</P
|
||
|
|
></LI
|
||
|
|
></UL
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="SECTION"
|
||
|
|
><H2
|
||
|
|
CLASS="SECTION"
|
||
|
|
><A
|
||
|
|
NAME="AEN2034"
|
||
|
|
>4.3.5. Description of the sound output classes</A
|
||
|
|
></H2
|
||
|
|
><P
|
||
|
|
>You can find a description of the sound output classes and more details on
|
||
|
|
Sound Blaster 16 emulation in the
|
||
|
|
<A
|
||
|
|
HREF="../development/sb16-emulation-basics.html"
|
||
|
|
TARGET="_top"
|
||
|
|
>developer documentation</A
|
||
|
|
>.</P
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="NAVFOOTER"
|
||
|
|
><HR
|
||
|
|
ALIGN="LEFT"
|
||
|
|
WIDTH="100%"><TABLE
|
||
|
|
SUMMARY="Footer navigation table"
|
||
|
|
WIDTH="100%"
|
||
|
|
BORDER="0"
|
||
|
|
CELLPADDING="0"
|
||
|
|
CELLSPACING="0"
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="left"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="bochsrc.html"
|
||
|
|
ACCESSKEY="P"
|
||
|
|
>Prev</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="34%"
|
||
|
|
ALIGN="center"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="index.html"
|
||
|
|
ACCESSKEY="H"
|
||
|
|
>Home</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="right"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="keymap.html"
|
||
|
|
ACCESSKEY="N"
|
||
|
|
>Next</A
|
||
|
|
></TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="left"
|
||
|
|
VALIGN="top"
|
||
|
|
>bochsrc</TD
|
||
|
|
><TD
|
||
|
|
WIDTH="34%"
|
||
|
|
ALIGN="center"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="setup.html"
|
||
|
|
ACCESSKEY="U"
|
||
|
|
>Up</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="right"
|
||
|
|
VALIGN="top"
|
||
|
|
>How to write your own keymap table</TD
|
||
|
|
></TR
|
||
|
|
></TABLE
|
||
|
|
></DIV
|
||
|
|
></BODY
|
||
|
|
></HTML
|
||
|
|
>
|