I/O parameters

Parameter	Dflt	Min	Max
MAXMAJOR	0x1FFF	0x7F	0x1FFF
MAXMINOR	0x3FFFF	0xFF	0x3FFFF
FDRDTRK	1	0	1
FD_DOOR_SENSE	1	0	1

MAXMAJOR

Maximum valid major device number. This parameter limits the maximum major number that a device node created by the mknod(S-osr5) system call can have. Although the system now allows major numbers up to ``0x1FFF'', this parameter can be set to a smaller value for compatibility reasons.

MAXMINOR

Maximum valid minor device number. This parameter limits the maximum minor number that a device node created by the mknod(S-osr5) system call can have. Although the system now allows minor numbers up to ``0x3FFFF'', this parameter is limited to ``255'' for compatibility reasons.

FDRDTRK

Enable (1) or disable (0) track buffer reads.

FD_DOOR_SENSE

Specifies whether the floppy disk driver uses the Disk Change Signal. The Disk Change Signal indicates whether the door of the diskette drive has been opened. For systems that do not provide this signal, the floppy disk driver will not function properly unless this parameter is set to ``0''. That is, when the parameter is set to ``0'' or false, the driver does not use the signal and this allows the driver to work on non-standard systems that do not provide the signal. The default setting is ``1'' or ``true'' to preserve the designed system behavior.

Asynchronous I/O parameters

Parameter	Dflt	Min	Max
AIO_LISTIO_MAX	128	32	32768
NUMAIO	256	32	32768

AIO_LISTIO_MAX

Maximum size of list I/O requests.

NUMAIO

Number of Asynchronous I/O Control Blocks.