Identity of PiHER 8C2K2 chip?

[bwinkel67]

This circuit board isn't for the QL (it's a programmable Spectrum Joystick Interface board by Downsway). I can't identify the PiHER 8C2K2 chip. Most I could track down was a PiHER 8C22K and 8C220K chips and still no clear description (maybe a microswitch?)

[ones' complement]

Surely nothing more than DIP resistor packs (pull ups?).

(Looks like variation on https://www.jupiter-ace.co.uk/hardware_ ... oller.html)