14 Jul
2014
14 Jul
'14
1:41 p.m.
The keyboard I'm using now is a 1988 1391401 Model M with a modular
jack. As best I can tell there's no switch or other external mechanism
on it for changing to an XT compatible mode.
It could be possible that you would have a separate DIN keyboard cable
as there's 6 pins on the modular jack but only 5 are used on AT
keyboards, so there could be a separate DATAXT pin on there that's
used with the other pins. I'd open mine to check but I don't have a
long and thin enough socket to open it up.
Hayden,
On 14/07/2014 12:52 PM, Sean Caron wrote:
I always wondered about this because I could swear
that I saw at
least one XT Model M in the day...
Does anyone know if you can identify a switchable Model M from the
keyboard cable being terminated into a modular type jack on the
keyboard side? Or was going from the modular jack to a hard-wired
PS/2 cord just a cost reduction at some point in time after the
keyboard was introduced?
Best,
Sean
On Mon, Jul 14, 2014 at 2:12 PM, steve shumaker <shumaker at att.net>
wrote:
> On 7/14/2014 9:48 AM, geneb wrote:
>
>> On Mon, 14 Jul 2014, Liam Proven wrote:
>>
>> On 14 July 2014 16:19, Jules Richardson
>> <jules.richardson99 at gmail.com>
>>> wrote:
>>>
>>>> Really? That's the first I've heard of that. Did they
>>>> auto-detect, or was there a switch/jumper (inside?) to
>>>> change them over?
>>>>
>>>
>>> I remember switchable keyboards from the 1980s. Usually there
>>> was a little slide-switch underneath, labelled "PC" or more
>>> commonly "XT" and "AT".
>>>
>>
>> I think the Northgate Omni keyboards were like that. I've got
>> one of those stashed around here too. :D
>>
>> g.
>>
>>
> now *that* was a nice keyboard... Northgate Omnikey Ultra!
>
>
>
> Steve
>