[Coco] WHAT MANNER OF UNHOLY WIZARDRY IS THIS?

[Bill Pierce]

Art,
H. Allen Curtis did several articles in Rainbow, Hot coco and Color Computer Magazine on installing and embedding ML to a basic pgram. I remember one called "*paint" (star paint) that not only was the code at the end of the basic file, but it would add itself to Basics cmds by having one line added to the beginning of the program. It would dynamically know it's own start address no matter how many lines of basic you added. IIRC, it peeked an address in basic's direct page to get the end of basic, then subtracted the program size to get the start.  He did several programs like that one. I remember using that technique to add commands to basic until I finally found a memory map of the basic cmd tables in Hot Coco (Micro80 days) and found out how to do it that way. That article was aslo by H.Allen Curtis.



Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3 
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-----Original Message-----
From: Arthur Flexser <flexser at fiu.edu>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sun, Apr 20, 2014 8:54 pm
Subject: Re: [Coco] WHAT MANNER OF UNHOLY WIZARDRY IS THIS?


The question is how does that end-packed binary get executed simply by
isting the program and not running it?  Or did I misunderstand your
escription, Juan?
Art

n Sun, Apr 20, 2014 at 8:38 PM, Juan Castro <jccyc1965 at gmail.com> wrote:
> Yeah, and now I get it: the BASIC program has a binary part appended
 after it, and it gets loaded along.

 On Sun, Apr 20, 2014 at 9:07 PM, Bill Pierce <ooogalapasooo at aol.com>
 wrote:
 >
 > Juan
 > Niether can RSDOS and never has as far as I know... the correct syntax
 is:
 > LOAD"FILENAME/EXT:n"
 >
 >
 >
 > Bill Pierce
 > "Today is a good day... I woke up" - Ritchie Havens
 >
 >
 > My Music from the Tandy/Radio Shack Color Computer 2 & 3
 > https://sites.google.com/site/dabarnstudio/
 > Co-Webmaster of The TRS-80 Color Computer Archive
 > http://www.colorcomputerarchive.com/
 > Co-Contributor, Co-Editor for CocoPedia
 > http://www.cocopedia.com/wiki/index.php/Main_Page
 > E-Mail: ooogalapasooo at aol.com
 >
 >
 >
 >
 > -----Original Message-----
 > From: Juan Castro <jccyc1965 at gmail.com>
 > To: CoCo List <coco at maltedmedia.com>
 > Sent: Sun, Apr 20, 2014 7:39 pm
 > Subject: [Coco] WHAT MANNER OF UNHOLY WIZARDRY IS THIS?
 >
 >
 > Get the DSK image "ADV2" in this page.
 > http://sites.mpc.com.br/ric/cp400/eadv.htm
 > Now load the BASIC program called "#" and list it, don't run.
 > It gets the address of the end of the BASIC program, subracts 6 and
 > UMPS TO IT! And an INTERACTIVE DISK MENU POPS OUT OF NOWHERE!
 > What is going on here?
 > (Unrelatedly, it seems HDB-DOS can't LOAD or LOADM files with
 > n:FILENAME.EXT" syntax. It gives me a ?FN ERROR.)
 > Juan
 > --
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 > oco at maltedmedia.com
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 >
 >
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