NAME
mcd
- Mitsumi CD-ROM driver
SYNOPSIS
mcd0 at isa? port 0x300 irq 10
options MCD_PROMISC
DESCRIPTION
The
mcd
driver provides support for
Mitsumi
CD-ROM
controller and drive on the
isa(4)
bus.
FILES
/dev/cd[0-9][a-h]
-
block mode Mitsumi
CD-ROM
devices
/dev/rmcd[0-9][a-h]
-
raw mode Mitsumi
CD-ROM
devices
SEE ALSO
intro(4),
isa(4),
ne(4),
we(4)
BUGS
The
mcd
hardware is difficult to probe accurately.
Historically, the
mcd
probe would accept any return values as indicating that an
mcd
drive was present. Other devices, particularly
ne(4)
or
we(4),
would then be incorrectly claimed by the
mcd
driver. The driver now only accepts result codes known to indicate
Mitsumi-compatible CD controllers, but may reject some
mcd
hardware which returns other result codes.
options MCD_PROMISC
enables the original promiscuous probe behaviour. Use with extreme caution.