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This is a first attempt to create an `improved' driver for the Mitsumi drives.
It is able to "live together" with mcd.c, if you have at least two Mitsumi
drives: each driver can use its own drive.
To allow this "coexistence" as long as mcdx.c is not a superset of mcd.c,
this driver has to use its own device files. We use MAJOR 20 for it. So,
you have to do
# mknod /dev/mcdx0 b 20 0
# mknod /dev/mcdx1 b 20 1
and so on, one entry for each drive to support, once.
If you are using the driver as a module, you can specify your ports and IRQs
like
# insmod mcdx.o mcdx=0x300,11,0x304,5
and so on ("address,IRQ" pairs).
This will override the configuration in mcdx.h.
This driver:
o handles XA and (hopefully) multi session CDs as well as
ordinary CDs;
o supports up to 5 drives (of course, you'll need free
IRQs, i/o ports and slots);
o uses much less kernel memory than the standard mcd driver
(no extra driver internal buffers!).
o plays audio (like the `old' driver, I hope)
This version doesn't support yet:
o shared IRQs (but it seems to be possible - I've successfully
connected two drives to the same irq. So it's `only' a
problem of the driver.)
This driver never will:
o Read digital audio (i.e. copy directly), due to missing
hardware features.
heiko@lotte.sax.de
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