That would seem to make sense. EMS 3.0 exposed the hardware port behaviour somewhat although 3.2 'removed' the interface. To get 8MB they are in fact implementing it as four standard 2MB EMS boards. Of course that's a perfectly valid real configuration so long as you don't map two boards to the same...

Just because I have it in front of me The Intel Aboveboard (the original 2MB beastie) works like this I/O port defaults to 0x258/9 Memory region used is either C000:0 or D000:0 software selected The ports used are actually the one given then +0x4000 +0x8000, +0xC000 In the Intel case 0x258 top bit s...

One option would be to emulate the lo-tech EMS board as that has driver source and an open hardware design ?

Alan