Date: Fri, 8 Jul 94 09:28:14 PDT
From: haddock@lifesci.lscf.ucsb.edu (Steven Haddock)
To: macgifts@SUMEX-AIM.Stanford.EDU
Subject: Guide to remapping PowerBook 5XX keyboard

This document tells how to make the row of function keys on your
500-series PowerBook serve as PageUp, PageDown, Home, End, and Forward Delete. 

The instructions are modified from the "PowerBook Key Remapping guide" 
created by Quinn "The Eskimo!" <quinn@cs.uwa.oz.au>. Thanks to Quinn!  

The exact changes made are:

Original Key          New Function
-----------------------------------
F5                    End
F6                    Home
F7                    PageDown
F8                    PageUp
F12                   ForwardDelete

(Using F7 for PageUp seems more natural to me, but I made them to match the 
existing up and down arrows on the keyboard. You can, of course,
switch them however you like.)

Warnings:
 * These changes are "hardwired" into your system, so if you come across a
   program that needs the functions keys, you won't be able to access them.

 * Work on a copy of your system. I made a RAM startup disk and did the 
   changes there first to check it out.

-----------------------------------------------------------------------
**Instructions for modifying your keyboard**

 1) Open a copy of the System in ResEdit.
 2) Open the resource KMAP ID=0 (not KCHR).
 3) Change the byte at offset $64 from $60 to $77 (F5 now sends End) 
 4) Change the byte at offset $65 from $61 to $73 (F6 now sends Home)
 5) Change the byte at offset $66 from $62 to $79 (F7 now sends PgDn)
 6) Change the byte at offset $68 from $64 to $74 (F8 now sends PgUp)
 7) Change the byte at offset $73 from $6F to $75 (F12 now sends FwdDel)
 8) Close the KMAP resource

 9) Open the ROv# resource with ID 1660 
10) Select the last set of '*****'. (On mine it was number 16).
11) Select 'Insert New Fields' from the Resource menu.
12) Set the type to KMAP and the Res ID to 0
      (This makes the System look to your KMAP resource instead of ROM).
l3) Save and close the System file
-----------------------------------------------------------------------

Notes:
 * The offsets are in the leftmost column of the KMAP resource; you change 
   the values in the *middle* column. 

 * Don't worry about the letters you see on the right of the KMAP resource
   when it's open. They are just the ASCII for the keycodes. In fact, 
   when you've make the modifications correctly the lowercase alphabet 
   should read 'wsycte' instead of '`abcde' and 'nup' instead of 'nop'.

 * These function keys are not to be confused with the FKEY (command-shift-#)
   resources used by the system.

 * Not all programs make use of these keys, so try them out in something 
   that you know does (like Microsoft Word).

Customization:
 * If you want to use other Function Key, you can find out the numbers to 
   change from by opening the KCHR resource ID 0. Press the key you want
   to reassign, and note the value next to 'Key:' (not Char:). Find this 
   number in KMAP resource 0 and change it instead. (For example change 
   the 65 instead of 60 to use F9 as Home). 

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

I can't guarantee anything except that these changes work fine on my 520c.
Hope you use them as much as I do.

--Steve
..................................................................
.   Steven Haddock              .     haddock@lifesci.ucsb.edu   .
.   Marine Science Institute, UCSB, Santa Barbara, CA    93106   .
..................................................................