Demo OCS MadeInCroatia/Binary crash
 

Hello,


I've noticed a crash with demo MadeInCroatia/Binary who started with WinUae 4.4.0.


The trackloader starts and then stops before crashing.


QuickStart mode A500.


Thank you.

Interesting.

What happen is that, at some time, bit #13 of INTENA is improperly set and directly cleared: [

000002BC MOVE.L #$a0002000,(A5,-$0036) <-$dff09a

].
It trigger L6 IRQ because of INTREQ EXTER bit re-set by a previous (CIA-B TOD ALRM?) pending.
The demo destroy exec, on vectors there is the old ROM jump, then system crash.

For some reason on real Amiga this strange combination works...

You missed the next line of disassembly which is the important bit. It is again due CPU IPL timing (and was previously worked around).

Yes, I've seen the $78 setup ;). So you already have plans to fix it in the next version?

Your original post sounds like interrupt never happens in this situation when running on real hardware. Which is not right.

I'll probably add some hack to "fix" this.

No no, sorry, I wasn't clear :)

:great

Coder is a talentless hack, obviously ;P.
In any case, there's a better solution than trying to fix that old junk: look for an updated version ("official" v1.1). It should have this line in bootblock (notice 1998):

@a/b exact. found on the scene archives. thanks

ftp://ftp.scene.org/mirrors/the_scen...Croatia_AF.DMS

work fine on winuae 4.4

"Fixed". If long write, check IPL after first word has been written.