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- Newsgroups: comp.sys.amiga.hardware
- Path: FreeNet.Carleton.CA!de351
- From: de351@FreeNet.Carleton.CA (K. C. Lee)
- Subject: Re: 4 IDE electronic design ?
- Message-ID: <DoB42A.JKz@freenet.carleton.ca>
- Sender: de351@freenet2.carleton.ca (K. C. Lee)
- Reply-To: de351@FreeNet.Carleton.CA (K. C. Lee)
- Organization: The National Capital FreeNet
- References: <31477CF5.17E9@cybera.anet.fr> <391.6646T1303T1518@babylon.inka.de> <1015.6647T4T1993@stack.urc.tue.nl>
- Date: Fri, 15 Mar 1996 11:32:34 GMT
-
-
- Mark van der Molen (elvis@stack.urc.tue.nl) writes:
- >
- > Even if you would have the schematics you wouldn't be able tobuild an idefix
- > interface i think...it need some programmable gate array logic chip or
- > soethuing like that...(that's what some tech wiz told me anyway)
-
- That's not true. The IDE interface is as simple as one can build... All
- you really need is a couple of /IDE_CS1 and /IDE_CS2 lines which can be
- generated with a $0.5 74F139 using a address line (can probably steal A5
- from the battery backed clock). The rest of the IDE signals (ie. data
- lines & address lines) are the same. You would have a pair of
- master/slave drives on each interface. The upper limit is the capacitance
- and loading on the IDE bus.
-
- Now the harder part is to hack existing driver in KS or write your own.
-
- > Mark
- >
- > Any schematics appreciated btw)
-
- BTW 1G hard drives are pretty cheap these days, why bother. ;)
-
- K. C. Lee
-
- Disclaimer: If you have problem understanding what I said, don't do the
- hack. :) You'll also need additional info on the IDE interface and pin
- outs on the real time clock.
-
-
-