Bus error while initializing VM in MiNT 1.14.x

["Konrad M.Kokoszkiewicz" <draco@mi.com.pl>]

> > 1) After a cold restart, when the MiNT welcome message appears, two bombs
> > come on the screen. Now, if you do a WARM restart (Ctrl/Alt/Del), the VM
> > will initialize and start. It was completely unpredictable before.
> 
> Could you track down where the buserror occurs?

OK, I traced the code down to this error. As I guessed before, it occurs in 
MiNT code. As fas as I was able to check it, it is the line 190 of util.c, 
inside kmalloc(). It is as follows:

	*p++ = KMAGIC

or in compiled code:

	move.l	#KMAGIC,(a0)+

I have no idea, what the register a0 (pointer p) is supposed to point to, but 
after the bus fault it contains $00000004. So it seems it remains 
uninitialized that time.

Notice the bus fault occurs only after a cold restart; after a warm reset it 
does not occur and VM initializes.

Gtx

Konrad M.Kokoszkiewicz

mail:draco@nidus.mi.com.pl
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http://www.orient.uw.edu.pl/~conradus/
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