Re: ProDOS-8 CDAs

[nathan@cco.caltech.edu (Nathan Mates)]

In article <LRamZB9w165w@graphics.rent.com> scraft@graphics.rent.com (Steve Craft) writes:
>I noticed that DiversiCache and the other older DSR utilities can create 
>their own CDAs from within ProDOS-8.  If there any way I can load some of 
>my favorites from within ProDOS-8?
>
   Well, I guess this is news-posting day for me. Well, if you look up in the
ToolBox Reference, Volume 1, you'll see a command to install a CDA given a
handle to it. This is a long and arduous procoss (I believe Roger Wagner
sells a program to do this, though), but here's the basic process:

1. Under ORCA, save the executable code from the CDA to a binary file (use
   the MakeBin command), relocated to some fixed location. Since you will
   probably want several active at once, make sure they won't overlap.
2. Then, write a quick ml program to copy a program from one fixed location
   to another. Basically, just copy 00/2000,x to 0x/yy00,x for the whole
   program. I've done this, and may post my source code and executable in
   a bit.
3. Once the program is relocated, make a handle to the program (usually, I
   make it in the first 4 bytes of the relocated thing), and install the
   CDA
4. If this is totally confusing, but me, and I'll post some more detailed
   stuff. :)

Nathan



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