Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!pacbell.com!att!rutgers!maverick.ksu.ksu.edu!unlinfo.unl.edu!hoss!greg From: greg@hoss.unl.edu (Lig Lury Jr.) Newsgroups: comp.sys.apple2 Subject: Re: Apple IIe SCSI Card. Is It Worth Using? Message-ID: <1991Apr16.223806.9428@unlinfo.unl.edu> Date: 16 Apr 91 22:38:06 GMT References: <1991Apr8.224042.18754@nevada.edu> <41090@cup.portal.com> Sender: news@unlinfo.unl.edu Organization: University of Nebraska - Lincoln Lines: 34 Nntp-Posting-Host: hoss.unl.edu Organisation: GBBS/ACOS Sysop Support M_Ray_Brooksby@cup.portal.com writes: >Someone asked why would you every want to run DOS 3.3 from a hardisk. The >obvious answer is there is still some great software only remembered in the >DOS 3.3 format. Remembered? I am unfamiliar with that usage. If you mean it only works under DOS 3.3, there are various patches you can make to DOS 3.3 file games to make them work under ProDOS. The most common problem are files which start at $07FD, which is protected under ProDOS. By removing this opening vector, adding a new vector at $0800 to a space after the program, and adding code to restore those three bytes and jump to where the $07FD vector pointed at makes most games work. I did this to a lot of mine when I got tired of all those 5.25" DOS 3.3 disks. If you are thinking about copying some old games on self-booting non-standard protected DOS, that isn't really possible, without some major deprotection and re-writing of code. This is regardless of whether you format your drive with a special DOS 3.3 or ProDOS. They were meant to be booted, so boot them. With special hard drive DOS 3.3, you aren't guaranteed that it will work with all your DOS 3.3 programs. It is about time you gave up the archaic system and get with the rest of the Apple II world with ProDOS. >M. Ray Brooksby >RayB@cup.portal.com >I'm full of opionions...none of which belong to anybody... -- /// ____ \\\ "It says, `Golgafrincham Ark Fleet, Ship B, Hold 7, Telephone | |/ / \ \| | Sanitizer, Second Class,' and a serial number." "A telephone \\_(\____/)_// sanitizer? A dead telephone sanitizer?" "Best greg \_\\\/ hoss.unl.edu kind." "But what's he doing here?" "Not a lot."