Re: Booting problem (Prodos)

[shack@crash.cts.com (Randy Shackelford)]

In article <37bgsa$qkh@er5.rutgers.edu>, Kid <neiderma@er5.rutgers.edu> wrote:
>
>>The boot block looks for and runs a file called "PRODOS" in the root
>>directory of the disk. It must be a sapling file (>512 bytes) and be a
>>SYS
>>(type $FF) file.
>
>What could be stripped out of ProDOS-8 (the SYStem file) if I wanted
>to save disk space on a 5.25" disk?  Say keeping most of the disk
>IO routines (chucking LOCK and UNLOCK and VERIFY and whatnot) and
>most of the slot stuff and all the video stuff.  I was thinking
>that it would be nice if I could make the ProDOS file maybe 2/3 or
>1/2 of what it is now, but be able to boot it and run ShrinkIt and
>ZLink.  

Yipes, ten years and some people still don't understand ProDOS. The only
stuff in the PRODOS file is the code for the kernel, code to relocate the
kernel and set up the machine, and device drivers for 5.25 drives and clocks.
LOCK, UNLOCK, VERIFY, and whatnot do not exist in the kernel. They are in
ProDOS BASIC, incorrectly called BASIC.SYSTEM by many people. 

If you're worried about space, just use an older version. 1.1.1 uses 30 blocks
and is the smallest.

>This would be for my own use.  Just to try out.  Thanks for not
>saying it's a silly idea. :)

It's a terrible idea actually
--
Randy Shackelford                                Huh huh, that was cool.
shack@crash.cts.com