[comp.sys.amiga] question on *1.1*

plav@cup.portal.com (10/11/88)

Now, nobody laugh TOO hard at this one...

Does (did) AmigaDOS1.1 have trouble dealing with more than 2 floppy
drives?  This is a serious question.

  "Why?"

Last weekend I had the need to run the Microbotics RAM test program on
my Starboard2.  The docs specifically require the use of 1.1, and
suggest using the supplied 'minimally configured' Workbench disk.

I hadn't used the diags since long before I added a second external
drive to my vintage A1000.  Imagine my surprise when the machine GURUed
just as the test program began to load.  Removing ONE of the external
drives (makes no difference which one...) will allow the test to run
to completion.

The GURU is the same every single time - and I have seen it occaisionally
in other unrelated situations - 8700000B.265f48F1.

Opinions?  The task address seems ridiculous.  Maybe it's not a DOS
problem, but trouble with the Microbotics disgnostics?  Maybe the power
supply is getting ready to give up?  But regular, everyday operation seems
fine...  Anybody with similar hardware wanna try it?

Since this isn't exactly of general interest to the net, an email reply
might be best.  In any event, thanks for your time!


Rick Plavnicky
{...}!sun!cup.portal.com!plav

plav@cup.portal.com (Rick M Plavnicky) (10/15/88)

In article <9938@cup.portal.com> I posted a few questions regarding DOS 1.1,
external drives, and a recurring problem I had.

Everyone who replied used email, as I suggested.  Thanks to all of you!

The troubles I wrote of are solved now.  It was unrelated to the drive or
OS; my hardware is fine.

Dave Haynie was one of the people that replied, and he wrote something
that I think some of you might find valuable, or at least reassuring.  I
know I did.

> Just for reference, the A1000 supply generates something like 8Amps at
> +5V.  The motherboard draws less than three, and they specify the
> expansion port at 1 amp, but it's really capable of more.  I used to
> power a Los Gatos backplane card and the (very power hungry) A2052 on
> my A1000.  Ran it like this for over a year, right up until the time I
> got my 2000.  Also had a total of 1 meg installed in the thing.  The
> +12V supply isn't quite as hefty, but it's just about as over-speced,
> percentage wise (can't recall just how much juice, but unless you're
> hooking up a 5.25" hard disk or something, don't worry).  And when you
> think about it, have you EVER heard of anyone having an A1000 power
> supply problem?  I suspect it might have happened somewhere, but I have
> yet to hear of such a problem.  A2000s generally have more than enough
> power, since most folks don't even come close to loading up their 20
> Amps @ +5VDC and 8 Amps @ +12VDC.  The A500 -- well, 2 out of 3 ain't
> bad...
> 
> 					-Dave

Again, thanks .net!


Rick Plavnicky
{...}!sun!cup.portal.com!plav