Hal Murray wrote:

Those are cables with typically 1 female connector at one end and 2 female
connectors at the other end.

I need 1 female and 1 male connector.

IDC male 40-pin for 80-conductor flat cable are apparently made from
unobtainium...

I don't think they make what you are looking for.

You might be able to fake it with a make-male gizmo. That is
plug a bunch of pins into a female connectot to turn it into a make connector.

If you can't find something targeted at that use, a normal
through-hole header might work. The board end will probably be too
short. Mumble. Solder two together, or push the pins off a bit, or ...


It won't work. You can't just solder two connectors together. That
will swap the odd & even pin numbers and short out the entire buss.


--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.