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1da177e4 LT |
1 | How to try to survive an IBM Mwave under Linux SB drivers |
2 | ||
3 | ||
4 | + IBM have now released documentation of sorts and Torsten is busy | |
5 | trying to make the Mwave work. This is not however a trivial task. | |
6 | ||
7 | ---------------------------------------------------------------------------- | |
8 | ||
9 | OK, first thing - the IRQ problem IS a problem, whether the test is bypassed or | |
10 | not. It is NOT a Linux problem, but an MWAVE problem that is fixed with the | |
11 | latest MWAVE patches. So, in other words, don't bypass the test for MWAVES! | |
12 | ||
13 | I have Windows 95 on /dev/hda1, swap on /dev/hda2, and Red Hat 5 on /dev/hda3. | |
14 | ||
15 | The steps, then: | |
16 | ||
17 | Boot to Linux. | |
18 | Mount Windows 95 file system (assume mount point = /dos95). | |
19 | mkdir /dos95/linux | |
20 | mkdir /dos95/linux/boot | |
21 | mkdir /dos95/linux/boot/parms | |
22 | ||
23 | Copy the kernel, any initrd image, and loadlin to /dos95/linux/boot/. | |
24 | ||
25 | Reboot to Windows 95. | |
26 | ||
27 | Edit C:/msdos.sys and add or change the following: | |
28 | ||
29 | Logo=0 | |
30 | BootGUI=0 | |
31 | ||
32 | Note that msdos.sys is a text file but it needs to be made 'unhidden', | |
33 | readable and writable before it can be edited. This can be done with | |
34 | DOS' "attrib" command. | |
35 | ||
36 | Edit config.sys to have multiple config menus. I have one for windows 95 and | |
37 | five for Linux, like this: | |
38 | ------------ | |
39 | [menu] | |
40 | menuitem=W95, Windows 95 | |
41 | menuitem=LINTP, Linux - ThinkPad | |
42 | menuitem=LINTP3, Linux - ThinkPad Console | |
43 | menuitem=LINDOC, Linux - Docked | |
44 | menuitem=LINDOC3, Linux - Docked Console | |
45 | menuitem=LIN1, Linux - Single User Mode | |
46 | REM menudefault=W95,10 | |
47 | ||
48 | [W95] | |
49 | ||
50 | [LINTP] | |
51 | ||
52 | [LINDOC] | |
53 | ||
54 | [LINTP3] | |
55 | ||
56 | [LINDOC3] | |
57 | ||
58 | [LIN1] | |
59 | ||
60 | [COMMON] | |
61 | FILES=30 | |
62 | REM Please read README.TXT in C:\MWW subdirectory before changing the DOS= statement. | |
63 | DOS=HIGH,UMB | |
64 | DEVICE=C:\MWW\MANAGER\MWD50430.EXE | |
65 | SHELL=c:\command.com /e:2048 | |
66 | ------------------- | |
67 | ||
68 | The important things are the SHELL and DEVICE statements. | |
69 | ||
70 | Then change autoexec.bat. Basically everything in there originally should be | |
71 | done ONLY when Windows 95 is booted. Then you add new things specifically | |
72 | for Linux. Mine is as follows | |
73 | ||
74 | --------------- | |
75 | @ECHO OFF | |
76 | if "%CONFIG%" == "W95" goto W95 | |
77 | ||
78 | REM | |
79 | REM Linux stuff | |
80 | REM | |
81 | SET MWPATH=C:\MWW\DLL;C:\MWW\MWGAMES;C:\MWW\DSP | |
82 | SET BLASTER=A220 I5 D1 | |
83 | SET MWROOT=C:\MWW | |
84 | SET LIBPATH=C:\MWW\DLL | |
85 | SET PATH=C:\WINDOWS;C:\MWW\DLL; | |
86 | CALL MWAVE START NOSHOW | |
87 | c:\linux\boot\loadlin.exe @c:\linux\boot\parms\%CONFIG%.par | |
88 | ||
89 | :W95 | |
90 | REM | |
91 | REM Windows 95 stuff | |
92 | REM | |
93 | c:\toolkit\guard | |
94 | SET MSINPUT=C:\MSINPUT | |
95 | SET MWPATH=C:\MWW\DLL;C:\MWW\MWGAMES;C:\MWW\DSP | |
96 | REM The following is used by DOS games to recognize Sound Blaster hardware. | |
97 | REM If hardware settings are changed, please change this line as well. | |
98 | REM See the Mwave README file for instructions. | |
99 | SET BLASTER=A220 I5 D1 | |
100 | SET MWROOT=C:\MWW | |
101 | SET LIBPATH=C:\MWW\DLL | |
102 | SET PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;E:\ORAWIN95\BIN;f:\msdev\bin;e:\v30\bin.dbg;v:\devt\v30\bin;c:\JavaSDK\Bin;C:\MWW\DLL; | |
103 | SET INCLUDE=f:\MSDEV\INCLUDE;F:\MSDEV\MFC\INCLUDE | |
104 | SET LIB=F:\MSDEV\LIB;F:\MSDEV\MFC\LIB | |
105 | win | |
106 | ||
107 | ------------------------ | |
108 | ||
109 | Now build a file in c:\linux\boot\parms for each Linux config that you have. | |
110 | ||
111 | For example, my LINDOC3 config is for a docked Thinkpad at runlevel 3 with no | |
112 | initrd image, and has a parameter file named LINDOC3.PAR in c:\linux\boot\parms: | |
113 | ||
114 | ----------------------- | |
115 | # LOADLIN @param_file image=other_image root=/dev/other | |
116 | # | |
117 | # Linux Console in docking station | |
118 | # | |
119 | c:\linux\boot\zImage.krn # First value must be filename of Linux kernel. | |
120 | root=/dev/hda3 # device which gets mounted as root FS | |
121 | ro # Other kernel arguments go here. | |
122 | apm=off | |
123 | doc=yes | |
124 | 3 | |
125 | ----------------------- | |
126 | ||
127 | The doc=yes parameter is an environment variable used by my init scripts, not | |
128 | a kernel argument. | |
129 | ||
130 | However, the apm=off parameter IS a kernel argument! APM, at least in my setup, | |
131 | causes the kernel to crash when loaded via loadlin (but NOT when loaded via | |
132 | LILO). The APM stuff COULD be forced out of the kernel via the kernel compile | |
133 | options. Instead, I got an unofficial patch to the APM drivers that allows them | |
134 | to be dynamically deactivated via kernel arguments. Whatever you chose to | |
135 | document, APM, it seems, MUST be off for setups like mine. | |
136 | ||
137 | Now make sure C:\MWW\MWCONFIG.REF looks like this: | |
138 | ||
139 | ---------------------- | |
140 | [NativeDOS] | |
141 | Default=SB1.5 | |
142 | SBInputSource=CD | |
143 | SYNTH=FM | |
144 | QSound=OFF | |
145 | Reverb=OFF | |
146 | Chorus=OFF | |
147 | ReverbDepth=5 | |
148 | ChorusDepth=5 | |
149 | SBInputVolume=5 | |
150 | SBMainVolume=10 | |
151 | SBWaveVolume=10 | |
152 | SBSynthVolume=10 | |
153 | WaveTableVolume=10 | |
154 | AudioPowerDriver=ON | |
155 | ||
156 | [FastCFG] | |
157 | Show=No | |
158 | HideOption=Off | |
159 | ----------------------------- | |
160 | ||
161 | OR the Default= line COULD be | |
162 | ||
163 | Default=SBPRO | |
164 | ||
165 | Reboot to Windows 95 and choose Linux. When booted, use sndconfig to configure | |
be2a608b | 166 | the sound modules and voilĂ - ThinkPad sound with Linux. |
1da177e4 LT |
167 | |
168 | Now the gotchas - you can either have CD sound OR Mixers but not both. That's a | |
169 | problem with the SB1.5 (CD sound) or SBPRO (Mixers) settings. No one knows why | |
170 | this is! | |
171 | ||
172 | For some reason MPEG3 files, when played through mpg123, sound like they | |
173 | are playing at 1/8th speed - not very useful! If you have ANY insight | |
174 | on why this second thing might be happening, I would be grateful. | |
175 | ||
176 | =========================================================== | |
177 | _/ _/_/_/_/ | |
178 | _/_/ _/_/ _/ | |
179 | _/ _/_/ _/_/_/_/ Martin John Bartlett | |
180 | _/ _/ _/ _/ (martin@nitram.demon.co.uk) | |
181 | _/ _/_/_/_/ | |
182 | _/ | |
183 | _/ _/ | |
184 | _/_/ | |
185 | =========================================================== |