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A. If you'd like to build some minimal mp3 player or so, you should simply build the
distribution yourself. That's not difficult at all and you safe a lot of memory by picking
individual files you *really* need instead of installing complete packages (with all their
documentation, compatibility links, additional but unused features). I think you can have
ALSA, some player, a shell and maybe even a useable editor in <10MB.
Another option is to use one of those router distros.
Q. Is it possible to remove the linux distribution from the disk on chip and put something
else there?
A. Yes. DOS tools for the DiskOnChip are available from M-Systems website (www.m-
sys.com). You'll need to boot from a DOS HDD or floppy, then use the M-Systems tools
to re-format the DiskOnChip as a DOS drive. When you reboot, the DoC will appear as a
regular DOS hard drive and can be used as such. Drivers for other operating systems are
also available from M-System's website. Re-formatting and installation methods vary by
operating system, but usually involve booting from another medium (floppy or HDD)
containing the new operating system, then formatting the DoC and copying over the OS's
files.
Q. How do you enable sound module support in the kernel?
A. Do the following:
# cd /usr/src/linux
# make xconfig
The "Linux Kernel Configuration" window comes up and you should select the "Sound."
Then, if you're going to compile your own alsa loadable modules, I believe all you need
to select from the "Sound" window is the first item: "Sound card support" and you only
need "m" for module support. Everything else in "Sound" can be set to "n".
Then "Save and Exit", then do:
# make dep clean bzImage modules modules_install
Then follow the other usual kernel compile instructions: ie copy the bzImage to /boot,
edit /etc/lilo.conf, and run lilo.
Q. Can I stream an MP3 on the board to test the sound? How do I do that? How about
full-duplex, can I test for that on the board?
A. You can install mpg123 on the system and FTP a .mp3 file to the board, then play the
.mp3 using mpg123.
(3 Seiten)
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