Considering all the problems and low used prices
involved. You might consider getting an old Grid 1520
which also has the advantage of an additional EPROM slot
which can contain info configuring various aspects of the
computer, including a system boot.
I wouldn't mind a Grid, but unless it has an ISA slot,
preferably two, it won't work for my application
Mine has two slots. IIRC one is a 16 bit ISA slot and the
other is 8 bit. They're both located in an expansion pod
that hands on the bottom of the Grid.
Joe