AWCTTYPA@UIAMVS.BITNET ("David A. Lyons") (02/01/89)
>Date: Mon, 30 Jan 89 19:24:20 est >From: GREYELF@WPI >Did you know CTRL-OPEN Triangle-Enter causes an absolute drop to the >monitor at any time on a Laser? So much for copy protection, if it >loads into memory, it can be copied. Interesting feature (no, I didn't know that). It isn't necessarily as simple as "if it loads into memory, it can be copied," though. What if the program stores important parts of itself (tables of addresses to important subroutines, which would always be called through the tables) in areas of memory that will be overwritten when you go into the monitor? Like the text screen at $400-7FF, the early part of the keyboard buffer ($200+), and certain zero-page locations ($00xx). Quite a few years ago this was actually a fairly common practice. > Mike. --David A. Lyons bitnet: awcttypa@uiamvs DAL Systems CompuServe: 72177,3233 P.O. Box 287 GEnie mail: D.LYONS2 North Liberty, IA 52317 AppleLinkPE: Dave Lyons