Well, there's another project for someone into
such: a generalised 'IBM 360/370
Style I/O Channel' adapter/interface to something modern/common. Although I
will speculate somebody with experience with IBM channel stuff will promptly
suggest it would be a nightmare. (My only experience with them is people from
the past attesting to how complex/arcane said channels were. Always left me a
little curious.)
I've never seriously looked at the IBM channel, but the DX11, the Unibus
-> IBM Channel interface, is 8 rows of M-series flip-chip cards, plus a
power control chassis + a PSU. And that only does the 'peripheral' side
of the interface, it can't be the 'master' (if that's the term).
So yes, I guess it is complicated...
-tony