isa 486 computer-on-a-board type things

[Alexandre Souza - Listas]

>> BTW, anyone can enlight me, why these system-on-a-board were made?
> Lots of slots.  If the system board goes bad, you can replace just the 
> system board instead of taking the whole machine apart to replace the 
> backplane.

Hmm, seems me a good proposition :oD Now that you said that, I see how 
interesting it is/was

But how it cares with the PCI slot selection line?