+++ /dev/null
-'\" t
-.\" Copyright (c) 2000 lars brinkhoff <lars@nocrew.org>
-.\"
-.\" %%%LICENSE_START(GPLv2+_DOC_FULL)
-.\" This is free documentation; you can redistribute it and/or
-.\" modify it under the terms of the GNU General Public License as
-.\" published by the Free Software Foundation; either version 2 of
-.\" the License, or (at your option) any later version.
-.\"
-.\" The GNU General Public License's references to "object code"
-.\" and "executables" are to be interpreted as the output of any
-.\" document formatting or typesetting system, including
-.\" intermediate and printed output.
-.\"
-.\" This manual is distributed in the hope that it will be useful,
-.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-.\" GNU General Public License for more details.
-.\"
-.\" You should have received a copy of the GNU General Public
-.\" License along with this manual; if not, see
-.\" <http://www.gnu.org/licenses/>.
-.\" %%%LICENSE_END
-.\"
-.\" Modified, Thu Jan 27 19:16:19 CET 2000, lars@nocrew.org
-.\"
-.TH DSP56K 4 2012-08-05 "Linux" "Linux Programmer's Manual"
-.SH NAME
-dsp56k \- DSP56001 interface device
-.SH SYNOPSIS
-.nf
-#include <asm/dsp56k.h>
-.sp
-.BI "ssize_t read(int " fd ", void *" data ", size_t " length );
-.BI "ssize_t write(int " fd ", void *" data ", size_t " length );
-
-.BI "int ioctl(int " fd ", DSP56K_UPLOAD, struct dsp56k_upload *" program );
-.BI "int ioctl(int " fd ", DSP56K_SET_TX_WSIZE, int " wsize );
-.BI "int ioctl(int " fd ", DSP56K_SET_RX_WSIZE, int " wsize );
-.BI "int ioctl(int " fd ", DSP56K_HOST_FLAGS, struct dsp56k_host_flags *" flags );
-.BI "int ioctl(int " fd ", DSP56K_HOST_CMD, int " cmd );
-.fi
-.SH CONFIGURATION
-The dsp56k device is a character device with major number 55 and minor
-number 0.
-.SH DESCRIPTION
-The Motorola DSP56001 is a fully programmable 24-bit digital signal
-processor found in Atari Falcon030-compatible computers.
-The \fIdsp56k\fP special file is used to control the DSP56001, and
-to send and receive data using the bidirectional handshaked host
-port.
-.PP
-To send a data stream to the signal processor, use
-.BR write (2)
-to the
-device, and
-.BR read (2)
-to receive processed data.
-The data can be sent or
-received in 8, 16, 24, or 32-bit quantities on the host side, but will
-always be seen as 24-bit quantities in the DSP56001.
-.PP
-The following
-.BR ioctl (2)
-calls are used to control the
-\fIdsp56k\fP device:
-.IP \fBDSP56K_UPLOAD\fP
-resets the DSP56001 and uploads a program.
-The third
-.BR ioctl (2)
-argument must be a pointer to a \fIstruct dsp56k_binary\fP with members
-\fIbin\fP pointing to a DSP56001 binary program, and \fIlen\fP set to
-the length of the program, counted in 24-bit words.
-.IP \fBDSP56K_SET_TX_WSIZE\fP
-sets the transmit word size.
-Allowed values are in the range 1 to 4,
-and is the number of bytes that will be sent at a time to the
-DSP56001.
-These data quantities will either be padded with zero
-bytes, or truncated to fit the native 24-bit data format of the
-DSP56001.
-.IP \fBDSP56K_SET_RX_WSIZE\fP
-sets the receive word size.
-Allowed values are in the range 1 to 4,
-and is the number of bytes that will be received at a time from the
-DSP56001.
-These data quantities will either truncated, or padded with
-a null byte (\(aq\\0\(aq) to fit the native 24-bit data format of the DSP56001.
-.IP \fBDSP56K_HOST_FLAGS\fP
-read and write the host flags.
-The host flags are four
-general-purpose bits that can be read by both the hosting computer and
-the DSP56001.
-Bits 0 and 1 can be written by the host, and bits 2 and
-3 can be written by the DSP56001.
-
-To access the host flags, the third
-.BR ioctl (2)
-argument must be a pointer
-to a \fIstruct dsp56k_host_flags\fP.
-If bit 0 or 1 is set in the
-\fIdir\fP member, the corresponding bit in \fIout\fP will be written
-to the host flags.
-The state of all host flags will be returned in
-the lower four bits of the \fIstatus\fP member.
-.IP \fBDSP56K_HOST_CMD\fP
-sends a host command.
-Allowed values are in the range 0 to 31, and is a
-user-defined command handled by the program running in the DSP56001.
-.SH FILES
-/dev/dsp56k
-.\" .SH AUTHORS
-.\" Fredrik Noring <noring@nocrew.org>, lars brinkhoff <lars@nocrew.org>,
-.\" Tomas Berndtsson <tomas@nocrew.org>.
-.SH SEE ALSO
-.IR linux/include/asm-m68k/dsp56k.h ,
-.IR linux/drivers/char/dsp56k.c ,
-.UR http://dsp56k.nocrew.org/
-.UE ,
-DSP56000/DSP56001 Digital Signal Processor User's Manual
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
OSDN Git Service
