On 27-08-17 21:04, k...@aspodata.se wrote:
PC/AT and PS/2 have the same protocol and electrical spec. except they
have different connectors. The protocol is bidirectional.
PC/XT has the same pinout and connector as PC/AT but not the
same protocol and they won't work together.
The protocol is keyboard -> pc only.
See page 16 of
http://kbdbabel.sourceforge.net/doc/kbdbabel-vortrag-vcfe80-20070429.pdf
and
https://en.wikipedia.org/wiki/IBM_PC_keyboard
for details.
Regards,
/Karl Hammar
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Aspö Data
Lilla Aspö 148
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I can admit that: a friend of mine cannot part of his original IBM AT
keyboard. So it has a converter from big DIN to PS2 to usb to connect it
to his PC without PS2 ports.
Grtz.
Nick
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