connecting between isa backplanes

[medical-nerd]

Hiya

I'm having a 'retro' computer midlife crisis.

I have a couple of PICMG SBC's and backplanes for these which have a couple of AT/PCI expansion sockets.
I want to connect between the AT connector on the host backplane and another on a passive backplane with 14 AT/ISA connectors.

The SBC probably won't have enough drive for the extension cables and extra sockets so  I'm prepared to put a prototype board in each with wirewrapped buffers to give enough drive for the extra cards, this 'shouldnt' be too critical as the boards should only be driven at 8Mhz - obviously I have a lot of reading of the ISA specs to do before designing this.

Has anyone done this before at a hobbyist level who can point me to the appropriate docs to start with. with so many connections to buffer I don't want to get into some stupid timing issue that I won't be able to debug - I want to leave that for the cards I want to build!!

Cheers

Steve