Path: utzoo!utgpu!water!watmath!clyde!bellcore!decvax!decwrl!sun!pitstop!sundc!seismo!uunet!mcvax!unido!rmi!kkaempf
From: kkaempf@rmi.UUCP (Klaus Kaempf)
Newsgroups: comp.sys.amiga
Subject: Re: Boot-block contest ( )
Keywords: .tech (split? vote NO!)
Message-ID: <878@rmi.UUCP>
Date: 13 Feb 88 14:36:46 GMT
Reply-To: kkaempf@rmi.de (Klaus Kaempf)
Organization: RMI Net, Aachen, W.Germany
Lines: 34
Posted: Sat Feb 13 15:36:46 1988

In <2798@dasys1.UUCP> kb@dasys1.UUCP (Stan Ziel) writes:
> But is there really anything useful to put in the boot
> block? I mean if you want to do anything at boot time,
> there is the startup-sequence to use.

Yes, there is. No, the startup-sequence might be too late.

The following is untested, but it should work. Both the
trackdisk.device and the AmigaDOS won't allocate buffers for
unused drives, so it will give you a bit of extra MEMF_CHIP.
Might be necessary for some games or if you don't have
enough RAM. Never needed it because I got 4.5megs and I find
programming much more fascinating than playing games. :-)

Try inserting something like this in your bootblock:

#include <resources/disk.h>

/* ... whatever you want ... */

struct DiskResource *dr;

if((dr = OpenResource(DISKNAME)) != NULL)
 {
 dr->dr_UnitID[1] =
 dr->dr_UnitID[2] =
 dr->dr_UnitID[3] = DRT_EMPTY;
 }

/* ... fire up AmigaDOS ... */

!ralph

Ralph Babel, Falkenweg 3, D-6204 Taunusstein, FRGermany