2 May
2012
2 May
'12
8:18 a.m.
Date: Tue, 01 May 2012 19:30:22 -0500
From: Jim Brain <brain at jbrain.com>
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Subject: Re: Wanted: Apple Keyboard Encoder MM5740AA/E
Message-ID: <4FA0801E.3060107 at jbrain.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 5/1/2012 12:43 PM, Pete Rittwage wrote:
Not quite yet. Mike Willegal has done pin mappings to use an AVR as a
drop-in replacement, but hasn't written any software yet.
-
Pete Rittwage
C64 Preservation Project
http://c64preservation.com
Hi guys,
I apologize if this isn't the place for this...
These come up on eBay every so often, but they are untested or I miss
them. Does anyone have any spares of this old chip? I've got an old
Apple II that I'd like to use the regular keyboard instead of a PS/2
adapter.
I purchased some of the "C" variant (MM5740AA/C) some time back, but
they
have a different key mapping than the Apple computers. If someone needs
those I can post for free or trade. I have no idea what keyboard they
were used in.
-
Pete Rittwage
Augusta, GA, USA
Any interest in an module that replicates the /E functionality?
(or, maybe there is already such a thing)
Jim
--
Jim Brain
brain at jbrain.com
www.jbrain.com
2 May
2 May
9:31 a.m.
On May 2, 2012 at 11:18 AM Pete Rittwage <peter at rittwage.com> wrote:
Interestingly, I pulled up the IC last night to see how easy a mapping to
AVR would be.
Please let Mike know he can have the PS2Encoder and/or C=Key code to help
the effort. (both GPL). I've just been in the code to add 16x8 KB scanning
routines to the encoder firmware, and that could pretty quickly be modified
to do 16x16 (handling the 10x9 of the Apple encoder). Both are AVR GCC.
I'm happy to help with modifying the firmware as well.
Jim
Any interest
in an module that replicates the /E functionality?
(or, maybe there is already such a thing)
Jim
--
Jim Brain
brain at jbrain.com
www.jbrain.com
Not quite yet. Mike Willegal has done pin mappings to use an AVR as a
drop-in replacement, but hasn't written any software yet.
10:08 a.m.
On Wed, May 2, 2012 12:31 pm, brain at jbrain.com wrote:
On May 2, 2012 at 11:18 AM Pete Rittwage <peter at rittwage.com> wrote:
Interestingly, I pulled up the IC last night to see how easy a mapping to
AVR would be.
Please let Mike know he can have the PS2Encoder and/or C=Key code to help
the effort. (both GPL). I've just been in the code to add 16x8 KB
scanning
routines to the encoder firmware, and that could pretty quickly be
modified
to do 16x16 (handling the 10x9 of the Apple encoder). Both are AVR GCC.
I'm happy to help with modifying the firmware as well.
Jim
Thanks Jim- I'll forward this to him.
-Pete
Any
interest in an module that replicates the /E functionality?
(or, maybe there is already such a thing)
Jim
--
Jim Brain
brain at jbrain.com
www.jbrain.com
Not quite yet. Mike Willegal has done pin mappings to use an AVR as a
drop-in replacement, but hasn't written any software yet.
4617
days inactive
4617
days old
2 comments
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brain＠jbrain.com -
peter＠rittwage.com