I have a vague memory of a computer (probably in the 16 bit era?) saving money on providing two joystick ports by using a DB25 housing with the middle pins removed, leaving two 9 pin clusters at the ends, into which two DE9 joysticks could be plugged. The case plastic covered over the middle of the connector.

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spiritplumber 5 days ago | parent [-]

It was an accessory to let you use Amiga joysticks on the PC, from the mid 90s. I had one.

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jameshart 5 days ago | parent [-]

Could well have been, though I’m still picturing a computer in my mind. Wasn’t the SAM Coupe, but that’s the sort of thing I’m recalling.

But: it was probably quite common on joystick interfaces, now you mention it. Thinking along those lines and searching for ‘twin joystick adapter’ let me actually find an example: https://www.ebay.com/itm/276075015721

Worth noting that in the image that shows two joysticks plugged in they really don’t look like they fit all that well…

	▲	spiritplumber 4 days ago \| parent [-]
		yeah it was basically that but I don't remember if it had USB or if it still had the old 15 pin analog at the other end.