Re: C= key interface

From: Jim Brain <>
Date: Mon, 12 Dec 2011 15:03:34 -0600
Message-ID: <>
On 12/12/2011 1:00 PM, Ethan Dicks wrote:
> Hi, Jim, I have an older one - the board has no soldermask, so I don't 
> know what rev that would be. Are there any changes I should be aware 
> of (features I might like to implement)? Thanks, -ethan Message was 
> sent through the cbm-hackers mailing list 
You know, one never knows how important source control can become until 
one finds situations like this.

I looked and found 5 revisions of the PCB.  The changes are:

8: Initial 3.0
9: PS/2 connector was backwards, changed diodes to be less tight
15: 3.0a, changed LED to be switched cathod, to allow SX64 signal use.  
Added J5 to support selectively getting power from C128/C128D
19: moved PS/2 to point out the side of the DB25,
26: Added Vcc pin near 8812 for pigtail (C128D users)

Hope that helps.

Jim Brain

       Message was sent through the cbm-hackers mailing list
Received on 2011-12-12 22:00:04

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