MCA/EISA boards (was: Re: OT: Mylex problems)

From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Sun Feb 3 19:21:43 2002

> Date: Sun, 3 Feb 2002 23:52:08 -0600 (CST)
> From: Tothwolf <tothwolf_at_concentric.net>
> To: <classiccmp_at_classiccmp.org>
> Subject: MCA/EISA boards (was: Re: OT: Mylex problems)
> Reply-to: classiccmp_at_classiccmp.org

> On Sun, 3 Feb 2002, Richard Erlacher wrote:
> > From: "Tothwolf" <tothwolf_at_concentric.net>
> > >
> > > I was referring to the wide variety of non-RAID host adapters
> > > BusLogic/Mylex used to make. I think they were the last company offering
> > > EISA and VLB adapters, although they also discontinued their ISA product
> > > line right after getting rid of those two.
> >
> > I've got a couple of EISA SCSI controllers from BusLogic. These can
> > be had at surplus for $5 or so whenever you want one. These two
> > belong to someone else, but I doubt he'd object to parting with them.
> > Since EISA and VLB are of limited interest, the boards for that are
> > pretty cheap nowadays.
>
> I bought 4 BusLogic EISA controllers of somesort last year for $2ea
> surplus, but haven't yet tested them. They have 4 EPROMS on them, that
> much I remember. I also ended up with some assorted and still untested
> Adaptec EISA boards in with them. I found a boxed MCA scsi controller from
> BusLogic (BT646?) a couple years ago, but don't have a PS/2 I want to put
> it in yet. I'm waiting till I find a decent MCA based 486 before I use it.
> I've got a few other assorted BusLogic/Mylex non-raid boards laying around
> somewhere. I wouldn't mind finding some VLB or different EISA cards tho,
> since they would be good for testing driver software.
>
> And speaking of MCA, what kind of slots are available in a P70? I've got a
> couple 3c527 boards I was thinking about using, but they are 32 bit.

P70: 1 x 32bit, 1 x 16bit slots, either 16MHz or 20. P75: 2x
32bit, 2x 16bit slots, 486dx 33 only.

Desktop: 70: 2x 32bit, 1x 16bit. -Axx is desirable, version of
486-25 exists (denoted as -Bxx).

Tower: 80: 5x 32bit, 2x 16bit. <--- is best for scsi buslogic to go
in if the boxen has -Axx which is 25Mhz 386dx w/ cache.

XP 90 3 slots (scsi card native and can accept pentium card), 77i
(5 slots onboard IDE or add your own SCSI card for better
performance, all IBM scsi controllers are dog slow except for
fast F/W and raid.) are far more later than last three by 2 years or
so and supports faster CPUs better, more memory also. 85 and 95 are
towers and holy grail of either is raid native and has pentium 90
complex processor card installed. Whew!

On most desktops and towers one of their slots has video slot
extensions but it's standard MCA slot in any case.

Cheers,

Wizard
Received on Sun Feb 03 2002 - 19:21:43 GMT