>Leo,
>
>First off, if it has built in PLAY/STOP buttons, you could probably
>just control those directly.
>
>If it's an IDE drive, then I'd imagine it should be fairly
>straightforward. You just need to be able to read and write 16-bit
>wide data to the drive, and there was a thread not so long ago
>regarding connecting IDE devices to microcontrollers. If you're
>using one of the smaller PICs, you could probably hack something
>together using a 16-bit shift register, or a latch.
>No need to worry about DMA or anything like that.
>Check out the ATA and ATAPI specs - AFAIK the CD play, stop, pause
>etc... commands are all accessible via ATAPI.
>
>If, on the other (third!) hand, it's a SCSI drive, well... I haven't
>got a clue!
>
>Good luck, (and it's not such a crazy idea!)
>
>Ben
>
>
>> I have a question to ask to this community; anyone have idea about the

>> of interface needed to build to permit the use of older 2X or 4X CDROM
>> reader for play musical CDROM, without the PC??
>>
>> It seems a crazy idea??
>
>
>--
>/***************************************************************\
>* Ben Stragnell             * .....benKILLspam.....codepuppies.com               *
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>\****************************************************************/
>

>
> Hi,
> my 2X CDROM reader have volume knob, eject  and forward button and a 3mm
> stereo audio jack.
>
> I never see the schematics of CDROM reader.
> I suppose there are two separate section, one for IDE interface and the
> other for audio section.
> Also I suppose that the audio section to start need power and some logical
> levels.
>
> Do you agree?
>
> Ciao
>
> Leo

> how would you play the audio? dot you need a soundcard?
>
> >Leo,
> >
> >Simple test - power up the CDROM with no IDE connection,
> and see if
> >the audio controls work. If so, just use those!
> >
> >Cheers,
> >Ben
> >
> >
> >Leonardo De Palo wrote:
> >>
> >> Hi,
> >> my 2X CDROM reader have volume knob, eject  and forward
> button and a 3mm
> >> stereo audio jack.
> >>
> >> I never see the schematics of CDROM reader.
> >> I suppose there are two separate section, one for IDE
> interface and the
> >> other for audio section.
> >> Also I suppose that the audio section to start need power
> and some logical
> >> levels.
> >>
> >> Do you agree?
> >>
> >> Ciao
> >>
> >> Leo
>