On Wed, Jan 18, 2017 at 10:28 AM, Ethan Dicks <ethan.di...@gmail.com> wrote: > > I know the 3151 is a later model in the sequence - it appears to > emulate the IBM 3101, plus the ADM-3A, ADM-5, ADDS Viewpoint A2, > Hazeltine 1500, and various Televideo TVI 9xx models. >
There are also plug in ROM cartridges (similar form factor to a PCMCIA card with a completely different connector) for the 3151 terminals which provide additional emulation capabilities. I have a 94X4114 cartridge which adds VT220 emulation capability to a 3151. Got that from Will on eBay a couple of years ago. Probably not easy to find if you go looking for one.