That's
just a subset of DEC vs IBM, an old but vigorous one. ?You
couldn't stick a VT100 on a mainframe (terminal emulator packages
aside) and you couldn't stick a 3270 on a VAX,
I think you could (either way), with the appropriate 3rd
party stuff. DEC was not completely unaware of block mode
terminals (VT62? And I think a VT-100oid?).