I was studying PCMCIA bridges of three different types back when I was also noodling out the T-REX ASIC under the PCMCIA Card Cage for the PB 1400.

The one I can't seem to find had a Bridge Chip almost identical to T-REX and I was half hoping a lot of the pinouts would match up between them.

Now that prices are way down I've got a DOA 2300c MoBo and one of the comrades has gifted me with a certified DOA 1400 MoBo. Now I'm going to go at it from the other direction, desoldering every component leading to/from the Card Cage's interboard connectors on the 1400 MoBo and matching them up with the signals on the Duo's Docking Connector . . .

. . . doing the same for the traces leading from the clock multiplier legs of the Duo's Proc is the other side of this 10 years running SuperDuo hack. [}] ]'>