Adaptec AHA-1520A Manual de Serviço descarregar pdf (Página 51)

SunOS 5.5 Devices bpp(7D)

char timeout_occurred; /∗ 1 if a timeout occurred ∗/

char bus_error; /∗ 1 if an SBus bus error ∗/

u_char pin_status; /∗

∗ status of pins which could

∗ cause an error

∗/

};

/∗ Values for pin_status ﬁeld ∗/

#deﬁne BPP_ERR_ERR 0x01 /∗ Error pin active ∗/

#deﬁne BPP_SLCT_ERR 0x02 /∗ Select pin active ∗/

#deﬁne BPP_PE_ERR 0x04 /∗ Paper empty pin active ∗/

#deﬁne BPP_SLCTIN_ERR 0x10 /∗ Select in pin active∗/

#deﬁne BPP_BUSY_ERR 0x40 /∗ Busy pin active ∗/

ERRORS EBADF The device is opened for write-only access and a read is attempted, or

the device is opened for read-only access and a write is attempted.

EBUSY The device has beenopened and another open is attempted.

An attempt has been made to unload the driver while one of the units is

open.

EINVAL A BPPIOC_SETPARMS ioctl is attempted with an out of range value in

the bpp_transfer_parms structure.

A BPPIOC_SETOUTPINS ioctl is attempted with an invalid value in the

pins structure.

An ioctl is attempted with an invalid value in the command argument.

An invalid command argument is received during modload(1M) or

modunload(1M).

EIO The driver encountered an SBus bus error when attempting an access.

A read or write does not complete properly, due to a peripheral error or

a transfer timeout.

A BPPIOC_TESTIO ioctl call is attempted while a condition exists which

would prevent a transfer (such as a peripheral error).

ENXIO The driver has received an open request for a unit for which the attach

failed.

The driver has received a read or write request for a unit number greater

than the number of units available.

The driver has received a write request for a unit which has an active

peripheral error.

FILES /dev/bppn bi-directional parallel port devices

SEE ALSO ioctl(2), read(2), write(2), sbus(4)

modiﬁed 22 Aug 1994 7D-47

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