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'[OT] OLD CDROM reader & PIC'
1999\02\20@164552 by cacciavite

picon face
Ciao PIC'er friend,

I have a question to ask to this community; anyone have idea about the type
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??

Grazie  for your suggestion.

Ciao

Leo

1999\02\20@172202 by Ben Stragnell

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face
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 type
> 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??


--
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* Ben Stragnell             * spam_OUTbenTakeThisOuTspamcodepuppies.com               *
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1999\02\20@233218 by Mark Willis

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cacciavite@BIGFOOT.COM wrote:
>
> Ciao PIC'er friend,
>
> I have a question to ask to this community; anyone have idea about the type
> 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??
>
> Grazie  for your suggestion.
>
> Ciao
>
> Leo

 Wearnes (English Co.?) used to make a 2x CD-Rom drive that was ATAPI
(IDE) compatible, which had a Play & Pause/Stop buttons.  No PIC
required.  My first 486 box ended up with one, I liked it but ended up
upgrading to a 4x Hitachi eventually, and using a CD player to play
music.  I've seen a few other CD-Rom drives with similar button
controls, don't recall the names (including some newer faster drives,
BTW.)  Check at your local swap meet, & ask a couple friends to watch
for you, maybe?

 OTOH, your Sony Walkman type CD players play Music CD's just fine,
usually, as well, and can possibly be found cheaper & easier, provided
you aren't needing to seek the music tracks on a CD-Rom but are just
playing a CD!

 Mark

1999\02\21@050900 by cacciavite

picon face
Great Ben,

I have followed your suggestion on an 8X CDROM on a working PC. Simple
removing the flat IDE cable, and stops the starting of WIN95, the LED
blink... it works... sound come out for the stereo hearphone.

Also work well the eject button and skip button.

Grazie e Ciao

Leo

-----Messaggio originale-----
Da: Ben Stragnell <sparespamKILLspamCODEPUPPIES.COM>
A: .....PICLISTKILLspamspam.....MITVMA.MIT.EDU <EraseMEPICLISTspam_OUTspamTakeThisOuTMITVMA.MIT.EDU>
Data: sabato 20 febbraio 1999 23.53
Oggetto: Re: R: Re: [OT] OLD CDROM reader & PIC


{Quote hidden}

logical
>> levels.
>>
>> Do you agree?
>>
>> Ciao
>>
>> Leo
>

1999\02\23@173806 by felix centeno

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face
if your drive has a play buttom you can only put the +5 and +12 V and is
ready,
Idid it before.


-----Mensaje original-----
De: cacciavitespamspam_OUTBIGFOOT.COM <@spam@cacciaviteKILLspamspamBIGFOOT.COM>
Para: KILLspamPICLISTKILLspamspamMITVMA.MIT.EDU <RemoveMEPICLISTTakeThisOuTspamMITVMA.MIT.EDU>
Fecha: Sabado, 20 de Febrero de 1999 05:45 p.m.
Asunto: [OT] OLD CDROM reader & PIC


{Quote hidden}

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