From mboxrd@z Thu Jan  1 00:00:00 1970
From: Maciej Hrebien <m_hrebien@wp.pl>
Subject: Re: OSS ioctls...
Date: Wed, 22 Dec 2004 21:40:20 +0100
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Richard Cooper wrote:
> 
> I am going to go insane...  Please help...
> 
> Here's my code:
> 
>    section .text
> 
>    %define SNDCTL_DSP_RESET 0x5000
>    %define SNDCTL_DSP_SPEED 0x5002
>    %define SNDCTL_DSP_SETFMT 0x5005
>    %define SNDCTL_DSP_GETFMTS 0x500B
>    %define SNDCTL_DSP_CHANNELS 0x5006
>    %define SNDCTL_DSP_POST 0x5008
>    %define SNDCTL_DSP_SETFRAGMENT 0x500A
>    %define AFMT_S16_LE 0x0010
> 
>    sys sys_open, dev_dsp, O_WRONLY; systrap "opening /dev/dsp"
>    mov [out_desc], eax
> 
>    sys sys_ioctl, [out_desc], SNDCTL_DSP_RESET, 0;               systrap
> "resetting dsp"
>    sys sys_ioctl, [out_desc], SNDCTL_DSP_GETFMTS, formats;       systrap
> "getting dsp formats"
>    sys sys_ioctl, [out_desc], SNDCTL_DSP_CHANNELS, channels;     systrap
> "setting dsp channels"
>    sys sys_ioctl, [out_desc], SNDCTL_DSP_SPEED, speed;           systrap
> "setting dsp speed"
>    sys sys_ioctl, [out_desc], SNDCTL_DSP_SETFMT, format;         systrap
> "setting dsp format"
>    sys sys_ioctl, [out_desc], SNDCTL_DSP_SETFRAGMENT, fragment;  systrap
> "setting dsp fragment size"
> 
>    section .data
> 
>    channels dd 1
>    speed dd 8000
>    format dd AFMT_S16_LE
>    formats dd 0
>    fragment dd $00080006
>    ass dd 0
> 

[cut]

Correct me if i'm wrong but as i remember the ioctl gets an
int (dd) as an argument - not an address. So [] is needed.

-- 
Maciej Hrebien