Re: A83: How about??

To: Conway <assembly-83@lists.ticalc.org>
Subject: Re: A83: How about??
From: Linus Akesson <lairfight@softhome.net>
Date: Fri, 22 May 1998 18:36:51 +0100
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <004401bd8572$55514f80$2d5924cb@conway>
Reply-To: assembly-83@lists.ticalc.org


That's the first program I ever made... It displays a menu over all programs
on the calc, then you can browse through them and toggle the protection. Easy
stuff, REALLY.

Linus

On 22-May-98, Conway wrote:

>I figure this is posible but I was wondering what you guys thought of. A
>program that protects and unprotects a program. I think for protecting
>programs you change one of the first bytes from 05h to 06h, and vice versa
>to unprotect a program. Now the only problem of this idea is how you chande
>it. Can you find the memory adress of this byte and then do something like
>this...
>        ld (hl), 05h
>If someone can confirm this I might actually get off my butt and make it.
>From
>                          ''~``
>                        ( o o )
>  ____.oooO__(_)__Oooo.____
> /  Steven Conway                         \
>[                                                        ]
>[   Conway@ssc.net.au                 ]
>[  (   )                                                ]
> \__\ (____(   )______________/
>       \_)        ) /
>                 (_/

References:

A83: How about??

From: "Conway" <conway@ssc.net.au>