[comp.os.coherent] Second Disk controller

foster@nzkites.actrix.gen.nz (Foster Schucker) (06/09/91)

Due to the small size of one of my systems, I only have two drive bays.
Currently there is a 5" and 3" floppy drive installed.  I use a hard-card
for my hard disk.  Since there is a disk controller on the mother board,
the hard card has it's own bios on the card to control the card controller.

Coherent is not amused by this set up. I sent a question into Tech Support
asking, and they state that the driver is not able to use the second
controller.

My questions are:
  1) Has anyone gotten a second controller to work?
  2) If I got the driver kit, is it possible to build a driver for the
     second controller.
     2a) If possible, is this a doable task in a few days?
  3) Anyone have ideas on how I can get Coherent to run on this system?

Thanks!
Foster Schucker == Wellington, New Zealand == foster@nzkites.actrix.gen.nz

root@mailgsm.mendelson.com (Geoffrey S. Mendelson) (06/10/91)

foster@nzkites.actrix.gen.nz (Foster Schucker) asks:
>
>Due to the small size of one of my systems, I only have two drive bays.
>Currently there is a 5" and 3" floppy drive installed.  I use a hard-card
>for my hard disk.  Since there is a disk controller on the mother board,
>the hard card has it's own bios on the card to control the card controller.
>
>Coherent is not amused by this set up. I sent a question into Tech Support
>asking, and they state that the driver is not able to use the second
>controller.
>
>My questions are:
>  1) Has anyone gotten a second controller to work?

	Not to my knowledge (but that is a self-limiting statment)

>  2) If I got the driver kit, is it possible to build a driver for the
>     second controller.

	Yes.
	
>     2a) If possible, is this a doable task in a few days?

	I doubt it. 
	
	You need a lot of time, patience and the source code of a working disk
	driver to start. It also helps if you can edit big files on your system,
	and have written device drivers before.
	
	Since you Hardcard has its own BIOS I asuume that it is realy a SCSI
	or (most likely) an IDE Host adapter and a 3 1/2" 1" high drive on the card.
	
	Since you may never be able to find out exactly what it is, I recommend:
	
>  3) Anyone have ideas on how I can get Coherent to run on this system?

Get a  3 1/2" drive that is compatible with the existing controler. There are
many 1" high low power SCSI drives on the market. There are also small IDE
drives, but they are not as common. You can then mount the drive on the side,
top or back of the computer. 

If you are handy, you can buy an empty card to go into a slot and then bolt 
the drive to it. If you mount the drive on a card, remove the drive before 
shipping the computer. 

------
Copyright (C) 1991, Geoffrey S. Mendelson.              All Rights Reserved.
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Geoffrey S. Mendelson           I've written and debugged almost eight thousand 
geoffrey@mendelson.com          LINES of C code under Coherent in the last two
mwcbbs!mailgsm!geoffrey         months.  :-)                     
(215) 242-8712                  And my wife still speaks to me!