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From: bryce@COGSCI.BERKELEY.EDU (Bryce Nesbitt)
Newsgroups: comp.sys.amiga
Subject: Re: PD Boot Disks / Posting of PD INSTALL program
Message-ID: <8705210803.AA16321@cogsci.berkeley.edu>
Date: Thu, 21-May-87 04:03:56 EDT
Article-I.D.: cogsci.8705210803.AA16321
Posted: Thu May 21 04:03:56 1987
Date-Received: Sat, 23-May-87 10:07:09 EDT
References: <504@myrias.UUCP> <1868@cbmvax.cbmvax.cbm.UUCP> <1541@cadovax.UUCP> <1890@cbmvax.cbmvax.cbm.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 102
Keywords: Draco compiler shareware includes
Summary: Comming right up...


> [This person] comes in
> periodically with bootable slideshow disks that he gives them for that
> purpose.  I've heard this happens at other stores.  Apparently it is
> technically illegal.  [goes on to talk about INSTALL]


After reading your message, I took the hacker approach, reached deep into
my assembler archives, and cooked up:

----------- Public domain install ----------

begin 777 install
M```#\P`````````"``````````$```!B0``!$P```^D```!B+'@`!$/Y````A
M(DZN_F@L0$'Y`````")()CP```#_<``A0``$1/P``"(9T8%1R__Z1(!3@"%`D
M``1P`&$``*QF"D'Y```$`'8D8`A!^0``!"1V%"0(3J[_Q"(`9PA.KO_0<`!.B
M=7`43G4O"B(\``$``7`B3J[_.B1`2H!G%'#_3J[^MG+_LH!F#B)*<").KO\NB
M)%]P`$YU%4``#Q5\````#A5\``0`"$(J``F3R4ZN_MHE0``00>H`%""(6)!"!
MJ``$(4@`""`*)%].=2\)</\30``((T``%'``$"D`#TZN_K`B7W`B3N[_+DCG3
M(!(L>``$)DB?_````#AP-R!/0AA1R/_\80#_9&<``&@O0``.'WP`!0`(0?D`1
M``0X(D]P`'(`3J[^1$J`9D@_?``#`!PO?```!```)$*O`"PO2P`H(D].KOXX4
M$"\`'V8F/WP`!``<(D].KOXX/WP`"0`<0J\`)")/3J[^.'X`'B\`'V````1^,
M_R)O``YA`/]2W_P````X3-](!"`'3G4```/L````!0````$```$6````3```<
M`$(````2````!@````````/R```#Z@```1-$3U,``````````W`L>``$0_H`.
M$$ZN_Z`@0$J`9A!3@$YU9&]S+FQI8G)A<GD`(&@`%G``3G4`````````````;
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M`````````````````````````````````````````````````````````````
M````````````````````1&ES:R!I;B!D<FEV92!$1C`Z(&ES(&YO=R!B;V]T4
M86)L92X*26YS=&%L;"!$1C`Z(&9A:6QE9`IT<F%C:V1I<VLN9&5V:6-E````D
%`````_(*_
``
end
------------------

The parser code relies on some stuff that you do not have, so it was
omited. This version of install works for drive DF0: only.

This code will only make the disk bootable.  Unless a "devs:system-
configuration" file is created it will come up with the standard yucky
colors and font.  Unless a "s:startup-sequence" file does something
(like start a slide show), this will be a very boring disk indeed.


Without workbench disk files you will not be able to use:

RAM: PRT: PAR: SER:, narrator, clipboard, the disk validator,
mathtrans.library, icon.library, translator.library, info.library,
mathieeedoubbas.library, version.library, diskfont.library or any CLI
commands

You may be able to snake out of the RAM: restriction with VD0: or VDK: and
the public domain "MOUNT" command that someone (Perry?) had.

------------------------------

You do NOT need to require CLI knowledge to execute a script that would copy
workbench files from a user's disk to the product disk.  A file that was
passed 'round a while back called "ICONEXEC" will give a Workbench icon to
a CLI command.	I do not have a copy, but it probably ended up on a FISH
disk.

----- Some technical info ----
The boot record is of this format:

	dc.b "DOS",0        ;Signifies DOS type disk
	dc.l 0		    ;Checksum goes here
	dc.l 880	    ;Unused and/or root key
	...		    ;Code

See the V1.1 ROM Kernal Manual Appendix L for the passed args to the
code.  The code in the the install above serves just to kick DOS in
the pants.  Just before that happens is a great time to make all sorts of
clean patches and replacements.  After DOS is up certain things may
get a bit messier to replace.

The huge array of zeros is the empty part of the boot record.  This is
fenced off in it's own area of the DATA hunk for easy non-source
modification.  The checksum is computed on the fly, so feel free to
cusomize the code in any way you see fit.


OO
\/  send all litigation to:  bryce@cogsci.berkeley.EDU