Music with assembler - /dev/dsp in pulseaudio?

Question

I want to make "music" or better just output a little "beep" with this assembler program:

play.s:

datei:
.ascii "/dev/dsp"

.globl play
play:
movl $5, %eax
movl $datei, %ebx
movl $1, %ecx
int $0x80
pushl %eax
movl %eax, %ebx
movl $4, %eax
movl 12(%esp), %ecx
movl 8(%esp), %edx
int $0x80

music.s:

.globl _start
#.lcomm buffer, 100
buffer:
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
.byte 0,255,0,255,0,255,0,255,0,255
_start:
pushl $buffer
pushl $100
loop:
call play
jmp loop
movl $1, %eax
movl $0, %ebx
int $128

I assemblered both with:

as music.s -o music.o as play.s -o play.o

and linked both with:

ld play.o music.o -o music

But then I registered that I do not have a "/dev/dsp"-file. So is there any similiar to /dev/dsp in pulseaudio?

Answer 1

The legacy /dev/dsp interface is not enabled by default.

To emulate it, try padsp (included with PulseAudio), or osspd.

Alternatively, output the sample data to stdout and pipe it into aplay.