I have an Emplant. Thanks to this thread I have moved "get Emplant working with MacOS and DOS" closer to the top of my TO-DO list.
As far as the emplant, The PAL chipe were upgraded with the emplant software updates. a couple were changed out with the upgrade from the emplant to emplant pro software then then a couple more were changed with the upgrade to e586.......
You might want to check your board.
@Jim Drew, how do you tell which version of pal chips in the emplant board