Re: A83: How about??


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Re: A83: How about??




Why make one when there 's already one out there. Oh well I'll do it then.
>From Conway
-----Original Message-----
From: Dimitri Hammond <dimitri@dynet.com>
To: Conway <conway@ssc.net.au>
Cc: Asembly list server <assembly-83@lists.ticalc.org>
Date: Friday, 22 May 1998 23:51
Subject: Re: A83: How about??


>
>Who cares where they are, make your own.  You had the right idea, just
>look up the program in the VAT, change that one little thingamajig at the
>beginning of the program header from 05 to 06 (or vice versa) and that's
>it! The calc will just see that and make the program uneditable.  It's
>fairly easy, I made a program that does it awhile back...
>
> -Dimitri
>
>
>On Fri, 22 May 1998, Conway wrote:
>
>>
>> Thank you, I didn't know that. Where are they. They don't seem to be at
>> ticalc.org.
>> -----Original Message-----
>> From: LGB240 <LGB240@aol.com>
>> To: assembly-83@lists.ticalc.org <assembly-83@lists.ticalc.org>
>> Date: Friday, 22 May 1998 21:27
>> Subject: Re: A83: How about??
>>
>>
>> >
>> >In a message dated 98-05-22 07:14:17 EDT, you write:
>> >
>> >There is already programs that do this on the 83.  ZPROT and ZUNPROT.
>> >> 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                 ]
>> >>  [  (   )                                                ]
>> >>   \__\ (____(   )______________/
>> >>         \_)        ) /
>> >>                   (_/
>> >>
>> >>
>>
>>
>


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