Keys - Non-Ace was RE: ACE Key codes (xx2247 etc.)

ben bfranchuk at
Mon Apr 25 21:10:55 CDT 2016

On 4/25/2016 7:21 PM, Jerome H. Fine wrote:
>  >Paul Koning wrote:
>>>> On Apr 24, 2016, at 8:54 PM, Jerome H. Fine <jhfinedp3k at>
>>>> wrote:
>>>> Kyle Owen wrote:
>>>> On a related note, a former DEC field engineer gave me this key (and
>>>> keychain). He thought it was a PDP-8 key at first, but it's not the
>>>> standard XX2247. It says KBM1100...any ideas what this might go to?
>>> I have followed this thread, but have not been interested enough
>>> to keep any of the old posts.
>>> ...
>>> The above post suggests that XX2247 was used for the PDP-8.
>>> If so, was any specific key used for the PDP-11?
>> XX2247 was the standard key for the PDP-11.  And the VAXen, at least
>> until DEC switched to plastic blank "keys" instead.
> Thanks to Tony Duell,  Jay West, Dennis Boone and Paul Koning.
> The reason I was asking is that I want a "hidden" HELP command
> for one of the PDP-11 programs that I wish to enhance.  That HELP
> command will require a "hidden" value, so what better number than
> 2247 for the value that will be required.  The command will not
> actually be hidden, of course, since there will be some documentation.
> But until the code associated with the HELP command is activated
> by using the HELP command, the user will not see the "hidden" stuff.
> It helps to have a sense of humour and look for a bit of fun when
> code is being written.
> Jerome Fine

Like:  This key is for the PDP-8 ... NOW FORMATING ALL DISK PACKS TO 12 BIT
FORMAT.Hit any other key to abort.

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