Hi Nasta, > [...] > >Two more plus a CF socket adds hot-swappable CF card capability... > > [...] > >PC87C307, an AD1816, a 91C96 (or possibly 91C111?). That more or less >covers all the necessary ISA components. > > [GF description] > >all on a 100x160mm PCBneed I say more :-)
Would it be worth considering to make a Q40/Q60 extension card with the IO components you have in mind for XY-Fire (plus one or two goodies)? The card wouldn't have much size constrainst, and almost no high-frequency challenges, so placement and routing shouldn't be too tricky. The card could be a "playground" to get familiar with the chips and write the software. All the best Peter