[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Why is this code exiting to the basic prompt?



BLuRry wrote:
> Oh wait... that's an acia command register.  Probably disables
> interrupts, etc.  It certainly turns off the serial card (or resets
> back to 300 baud anyway)
>
> Guess what, Nick?
>
> YOU SOLVED THE RIDDLE.
> YOU SICK LITTLE MONKEY.
>
> Games that now work:
> Agent USA
> BallBlazer
> Frogger
> Cyclod
> Vindicator
> (and quite a few others probably... I haven't been able to test all
> 200+ games ya know)
>
> Cheers!
> -B


7fd: jmp 2466
2466: 6da0.719f > 400 (each byte is xor'd with BB -- this is obviously
the crack screen)
248B: wait for keypress, clear strobe, jmp 2400

So the crack screen was barfing your screen holes? and a reset puts
things back?


Glenn