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From: wsm@ccadfa.adfa.oz.au (Wayne Myles)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.ps2.hardware
Subject: Re: repost: Hardcard in a Model 30-286?
Message-ID: <1881@ccadfa.adfa.oz.au>
Date: 6 Sep 90 13:02:34 GMT
References: <1990Aug28.125529.8486@clmqt.marquette.Mi.US>
Organization: Computer Centre, University College, UNSW, ADFA, Canberra, Australia
Lines: 49

jimd@clmqt.marquette.Mi.US (Jim Drosen) writes:

>I've had no luck installing a hardcard in a Model 30-286 which has the
>standard 20 meg internal drive.  The docs for the hardcard are lost.
>It has an OMTI controller and a Miniscribe drive.

First, could you specify what species of HardCard it is?  Is it truly
a "HardCard" (ie, from Plus Development) or just a generic drive-on-a
card?  I'm afraid I can only help you with the "Plus" types.  To save
time, I'll assume that it is a Plus...

If it is an early Plus HardCard (20MB), there is a jumper about 2"
above the bus connector, which has two positions.  The default position
configures the drive as drive C: at c800, the alternate configures it
as the second hard disk, at ca00 (from memory.)

If it is one of the newer cards, the HardCard II-40 or -80, it's not
much harder.  You say there are switches, so it's more likely to be
one of these.

The easiest thing to do is to configure the switch block as the second
drive, viz:

	SW1    SW2    SW3      BIOS Addr     I/O Addr        Drive sel
(default)ON     ON     ON     c8000-c9fff    170-177,376-377   0
	 ON     ON     OFF    ca000-dbfff    320-327,32e-32f   0

(You want the second one.)  You may also need to change the IRQ level,
which has two settings, 11 and 12...

	SW4    SW5    IRQ level
	ON     OFF       11
	OFF    ON        12
	others		 ?? undefined.  Smoke?  :-)

Alternatively, if you have none of the above products, look for a jumper
that implies something like primary/secondary address, c800/ca00, or
something like it.  Set up the HardCard (whatever it may be) as the 
secondary controller.

Finally, if it is a HardCard (tm), you will need to install the device
driver that comes with it before you can use the drive properly.  It's
a hassle, but once it's installed, it purrs away beautifully, and boy is
it ever *fast*!  (Admittedly, not as fast as an IDE, ESDI or SCSI disk,
but it beats the pants of my MFM CDC drive!)

Good luck,

Wayne Myles