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.