The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: Andrew Kohlsmith
Subject: Re: Design a simple switch circuit to control CD ROM
Date: Fri, 27 Dec 2002 09:32:50 -0500
NNTP-Posting-Date: Fri, 27 Dec 2002 09:32:54 EST
Organization: WorldCom Canada Ltd. News Reader Service
>>Third, the odds of doing this are pretty much nil. Assuming you're
>>talking about an IDE/EIDE drive, there is NO way to duplicate commands on
>>the IDE bus with "a series of switches", and a "simple interface" is
>>basically going to consist of some type of portable computer with an IDE
>>interface built in.
> The purpose is to design something that most people thought it would
> be impossible. I have a few CDROM drives laying around my house and
> would like to put it in my car since it can read CDR and CDRW and it
> sounds great without skipping. I know that I can buy almost
> anything with money. If I decide to buy one, I would rather purchase
> the MP3 player instead. I think it is possible to modify the existing
> CDROM drive controller to extend its' function.
Actually you should be able to do it with some switches and quite a bit of
logic (think latches and lots of them) -- it'd be far simpler to use
something like a PIC16F84 to do it. The IDE commands are actually pretty
straightforward (play, stop, eject, etc.) and they're available online.
You don't need a full blown portable computer when a small cheap
microcontroller will do it with ease. and an IDE interface is nothing more
than a standard 8-bit (or 16-bit) parallel bus.
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup