speaker

speaker

[ssams]

is this right site fir this message..? sorry if no
in one time i've read some articel about BIOS and port, i 
dont understand why from these articel, speaker is one 
peripheral that no BIOS or kernel have any modul to acces 
it, what about virus detection or alarm facilities from 
BIOS..?
i've sent a message to the articel owner but no replyu 
till here
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Re: speaker

[hp]

re, for instance, linux /dev/audio, /dev/dsp 
which the <pcspeaker> package conects to the speaker
I lost the exact URI, but coulkd mail you the source;
was at ftp.hu-berlin.de


ssams am Mittwoch, 15. Januar 2003 00:01:
> is this right site fir this message..? sorry if no
> in one time i've read some articel about BIOS and port, i
> dont understand why from these articel, speaker is one
> peripheral that no BIOS or kernel have any modul to acces

linux doesn't (didn't?) like those by bios supplied virus protectors.

> it, what about virus detection or alarm facilities from
> BIOS..?
> i've sent a message to the articel owner but no replyu
> till here

-- 
Linux,Assembly,Forth: http://www.lxhp.in-berlin.de/index-lx.shtml en/de
  >> lx -at- lxhp -dot- in-berlin -dot- de <<

speaker

[Jan Willem Stumpel]

Congratulations to the developers. 1.3.3 is better again. The EGA 
emulation on X is now perfect ("Captain Comic" works 100%).

I have a question about the PC speaker. "emulated" and "native" both 
work, and the beeps come out of the PC speaker in both cases. Was it the 
case (in the past) that "emulated" meant that simulated beeps came 
through the sound card, or has it always been like this? I cannot remember.

Regards, Jan

Re: speaker

[Bart Oldeman]

On Thu, 29 Dec 2005, Jan Willem Stumpel wrote:

> I have a question about the PC speaker. "emulated" and "native" both work, 
> and the beeps come out of the PC speaker in both cases. Was it the case (in 
> the past) that "emulated" meant that simulated beeps came through the sound 
> card, or has it always been like this? I cannot remember.

Emulated vs. native is comparable to graphics in X vs. graphics on the 
console. The setting only makes a difference on the console. In X (using 
XBell()) or a terminal (^G) the speaker is always emulated.

"Emulated" means that the port I/O that DOS does to generate sound is 
trapped and converted into an ioctl (KDMKTONE, see console_ioctl(4)).

"Native" causes the port I/O to be forwarded straight to the hardware.
It needs root but may be more accurate. Well, for simple PACMAN style 
beeping games I don't hear any difference, and for advanced PC speaker 
"abuse" even native is not enough. YMMV

Bart