DSP56K(4) | Linux Programmer's Manual | DSP56K(4) |
dsp56k - DSP56001 interface device
#include <asm/dsp56k.h>
ssize_t read(int fd, void *data, size_t length); ssize_t write(int fd, void *data, size_t length);
int ioctl(int fd, DSP56K_UPLOAD, struct dsp56k_upload *program); int ioctl(int fd, DSP56K_SET_TX_WSIZE, int wsize); int ioctl(int fd, DSP56K_SET_RX_WSIZE, int wsize); int ioctl(int fd, DSP56K_HOST_FLAGS, struct dsp56k_host_flags *flags); int ioctl(int fd, DSP56K_HOST_CMD, int cmd);
The dsp56k device is a character device with major number 55 and minor number 0.
The Motorola DSP56001 is a fully programmable 24-bit digital signal processor found in Atari Falcon030-compatible computers. The dsp56k special file is used to control the DSP56001, and to send and receive data using the bidirectional handshaked host port.
To send a data stream to the signal processor, use write(2) to the device, and 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.
The following ioctl(2) calls are used to control the dsp56k device:
/dev/dsp56k
linux/include/asm-m68k/dsp56k.h, linux/drivers/char/dsp56k.c, http://dsp56k.nocrew.org/, DSP56000/DSP56001 Digital Signal Processor User's Manual
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2020-08-13 | Linux |