Path: utzoo!attcan!uunet!husc6!bloom-beacon!tut.cis.ohio-state.edu!ucbvax!pro-harvest.UUCP!edward
From: edward@pro-harvest.UUCP (System Administrator)
Newsgroups: comp.sys.apple
Subject: Re: How do you do DVORAK?
Message-ID: <8905150650.AA03263@crash.cts.com>
Date: 14 May 89 20:50:31 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: pnet01!pro-sol!pro-newfrontier!pro-nfmail01!pro-harvest!edward@nosc.mil
Organization: The Internet
Lines: 86

Network Comment: to #800 by obsolete!voder!pyramid!octopus!chan%ucbvax.berkeley.edu

I discovered that the IIe ROMs contained a Dvorak keyboard arrangement when
I was reading "Understanding the Apple IIe", by Jim Sather.  The
instructions were simple enough, the IIe was out-of-warranty, and I was
bored.  So, armed with soldering iron and chip-puller, I carefully followed
the directions in the book, and behold! it didn't work!  So I bought the
Apple IIe Reference Manual and perused the schematics.  The circuit that I
designed doesn't resemble Sather's, but -it works-, and has done so for
five years.  I assume that I got it right. :)

I have an enhanced IIe with a revision B motherboard, and that's the only
machine that I've ever tried this on, so I don't know if this will work on
an original Rev. A motherboard.  If it does, please tell me.

You'll need these parts: an SPST switch (push-on/push-off) -- Radio Shack
275-617 is the one that I used [Note: the part number is from the 1988
catalog]; a 24-pin DIP socket; and approximately 75 cm (2.5 feet) of
30-gauge wrapping wire.

(1) On the DIP socket, bend pin 18 outwards; when this socket is inserted
between the Video ROM and its motherboard socket, this pin should not be
connected to the motherboard.

(2) Connect pin 18 to pin 12 of the socket, using the wrapping wire.  Make
only two or three turns of wire on pin 12, or the pin may not seat fully
when inserted in the Video ROM socket.

(3) Remove the Video ROM, located at F4 on the motherboard.  (The Apple
part number is either 342-0133, if you have an unenhanced IIe, or
342-0265-A if your IIe is enhanced.)  Insert your wire-wrapped DIP socket
into the now-vacant Video ROM socket.  Pin 1 is towards the right front of
the board, as you are looking at it; pin 18, which is sticking outwards
from the socket, should be to your left.  Then reinsert the Video ROM.

(4) Remove one of the unused connector cut-out covers on the back panel; I
used number 12, which is the horizontal one above the power supply.  Cut an
opening in the center of the cover and mount the push-button in it.  Now,
cut the remainder of the wrapping wire in half, and solder one lead to each
terminal of the switch.  Then replace the cover, with the switch mounted in
it.

(5) Remove any interface cards that you have installed, and route this pair
of wires from the connector cut-out to connector J19 (middle of the
motherboard, on the right side).  You don't really need to remove the
interface cards, but it may help.

(6) Connect the SPST switch to connector J19, wire-wrapping the
connections.  I actually found a two-socket Molex connector which fit onto
J19, so I used that.  I found the Molex accidentally while digging through
a box of spare parts, and I don't know of a part number or a source for it.

(7) That's all, folks.  When the switch is out, and J19 is open, then you
have a QWERTY layout.  Push the switch in, and you're using Dvorak.

----------

However, the Dvorak layout on the IIe is not the same as that of the IIgs
or the IIc: three of the keys are misplaced.  This is the layout, as it
appears on the IIe (unshifted characters only):

QWERTY  1 2 3 4 5 6 7 8 9 0 - =
Dvorak  1 2 3 4 5 6 7 8 9 0 [ ]

QWERTY  q w e r t y u i o p [ ] \
Dvorak  / , . p y f g c r l ; = \

QWERTY  a s d f g h j k l ; '
Dvorak  a o e u i d h t n s -

QWERTY  z x c v b n m , . /
Dvorak  ' q j k x b m w v z

The incorrect keys are the apostrophe/quote (IIe), which should be
semi-colon/colon (IIc, IIgs); slash/question mark (IIe), which should be
apostrophe/quote (IIc, IIgs); and semi-colon/colon (IIe), which should be
slash/question mark (IIc, IIgs).  The grave accent/tilde key, wherever it
appears, doesn't change, nor do the backslash/pipe (aka vertical bar) or
the "a" and "m" keys.

Disclaimer: Don't Try This At Home, Kids!

 ProLine: edward@pro-harvest               | pro-harvest +1 312 253 8239
   UUCP: crash!pro-harvest!edward          | 24 hour operation
   ARPA: crash!pro-harvest!edward@nosc.mil | 300/1200/2400 bps  
InterNet: edward@pro-harvest.cts.com       | Online since 1 April 1989