Sadly I'm in the UK, so those discs are hard to get a hold of, looks like I'll have to get a new PS1 one day.There are discs like CodeBreaker and the like, instead of using a parallel device, it's just inserted and booted first before swapping the disc out with another game.
Thanks, but they're hard to get a hold of to, someones selling a boot disc on ebay, but i have to owe someone money at the moment :/gameshark uses discs and the 2nd memory card slot