Date   : Sat, 24 Oct 2009 16:17:38 +0100
From   : mu.list@... (Mark Usher)
Subject: Master 512 & Gem

I had tried both methods 1 & 2. I rewrote disc 2 again with method 2, then
tried method 1 again. Still no joy.
Then I rewrote the 640k boot disc with method 1 and hey presto gem would
boot from disc 2. Quite bizarre.

At least it is working now. Now all I need is Norton Commander v1.0 -
actually on the DABS list as working. I tried v2.0 but that doesn't work.
Probably because of the screen res. Oh and the Econet compatible version of
DOSPlus.

Might just build myself a 1Meg extension board now.

-Mark


> -----Original Message-----
> From: bbc-micro-bounces+mu.list=aon.at@... [mailto:bbc-
> micro-bounces+mu.list=aon.at@...] On Behalf Of David
> Harper
> Sent: 23 October 2009 17:12
> To: 'BBC micro mailing list'
> Subject: Re: [BBC-Micro] Master 512 & Gem
> 
> Mark Usher wrote
> 
> 
> > Hi all.
> >
> > I have just been trying to boot GEM on a Master 512.
> > I downloaded the 2.1 set of disks from cowsarenotpurple and
> transferred
> > them
> > across.
> >
> > First boot disk is fine and boots up DOS as expected. I insert the
> second
> > disk and type
> > A>GEM
> > Which then proceeds to load
> > A>ADDMEM 333
> > Additional Memory Allocation = 333
> > A>CD \GEMSYS
> > A>GEMVDI
> >
> > Then the screen changes to blank white, disc access stops and the GEM
> > desktop doesn't initialise. Tried rewriting the image to another disc
> but
> > still the same.
> 
> Which of the sets of software have you downloaded from the site? (Some
> of
> them contain disk images, and some the original files just zipped
> together.)
> 
> If you are using the disk images (either the whole images (the "Method
> 1"
> set) or the split images (in the "Method 2" set)) then how are you
> writing
> them to the disks? Depending on which program you are using, you might
> need
> different settings for 640kb disks (Disk 1) and 800kb disks (Disks 2, 3
> &
> 4). In particular, the tracks are in a different order on the two types
> of
> disk. 640kb disks are like ADFS - all the tracks on one side followed
> by all
> the tracks on the other. These might best be treated as SSD disk
> images.
> 800kb disks are more like standard DOS - tracks on alternate sides. So
> they
> are more like DSD images.
> 
> If you have got the system going with Disk 1 (as you clearly have), an
> alternative approach for the other disks would be to download the
> "Method 3
> & 4" package. This contains all the files from the other three disks as
> simple Zips. You could unzip these on a PC then take the files across
> to the
> 512 on 360kb or 720kb disks, or else via the serial port.
> 
> Best of luck!
> 
> David Harper
> 
> 
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