Speaking of PS/2s...

From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Fri Dec 21 12:28:26 2001

> Date: Fri, 21 Dec 2001 08:15:58 -0800 (PST)
> From: Ethan Dicks <erd_6502_at_yahoo.com>
> Subject: Re: Speaking of PS/2s...
> To: classiccmp_at_classiccmp.org
> Reply-to: classiccmp_at_classiccmp.org

>
> --- Tony Duell <ard_at_p850ug1.demon.co.uk> wrote:
> > >
> > > On Tue, 18 Dec 2001, Doc Shipley wrote:
> > >
> > > > I have a 5870-121...with... a 120M ESDI drive...
> > >
> > > Are you sure the drive is ESDI? I think the model 70 shipped with an
> > > IDE drive.
> >
> > The IBM PS/2 Hardware Interface TechRef contains a pinout of the hard
> > disk connector. The signals look to be almost a subset of the MCA
> > signals. It certainly doesn't look like an ESDI interface.
> >
> > I guess you could call it 'IDE', but it's not the same interface as is
> > used on more normal PCs.
>
> I think it could be considered "IDE" in the original sense - Integrating
> the controller into the drive, but it is not ATA (AT-Attachment) IDE.

Right. IDE is catch all for different standards. I once got in big
arguement till blue in the face because I was younger and didn't get
the conception of ATA as IDE. :-) "Intergated Drive
Electronics".

There are two models of 700 and 720 series which are MCA thinkpads
using very rare MCA IDE 2.5" drives. If the HD dies, you're very
SOL literally. Requires $500 adapter, mods to thinkpad hardware to
accept notebook ATA drives.

MCA IDE would describe this correctly.

Cheers,

Wizard

> -ethan
 
Received on Fri Dec 21 2001 - 12:28:26 GMT