One of the best copy protections on an Apple // floppy disk I ever saw was by burning a hole in the media. It was a easy game to copy but I could never get it to boot 100%. I examined all of the sectors data line by line and both disks were 100% alike that I could see. One day I had picked up the game disk and I saw a hole burnt in the middle of the media. I turned the media in the jacket and sure enough there was a hole in the middle of the data portion . I think that there was a block and sector that was supposed to be missing. I forget the name of the game program but it was interesting trying ot hack these games and I learned a lot. Sunburst software was one of the educational games disks that I could never copy no matter what tricks I tried.
-----Original Message----- From: Apple2list [mailto:[EMAIL PROTECTED] On Behalf Of John Sent: Tuesday, January 18, 2005 1:14 PM To: Apple2list Subject: Re: Apple II card question The original Apple 2 from 1977 had an integer basic ROM set on the motherboard. Apple came out with an Applesoft (floating point) rom set that they put on a card (with switch to toggle between integer and floating point (switching the switch with power off)). Most users used floating point more than integer so they swapped the ROMs from the motherboard (the integer basic ones) to the card and vice versa. The (marginal) benifit of this card now days is you don't need to load the integer basic routines into RAM on top of the DOS. I understand that this card was used by a number of "crackers" for causing an NMI when switched with power on, so they could drop to machine language and tinker with the code to bypass/remove copy protection on certain programs/floppies. Just my few cents... JW -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
