The 7171 provided high-density 3270 emulation for serial ASCII terminals. It presented 2 32-device control units (up to 64 devices per unit), and (AFAIK, uniquely) provided a way to go "transparent" to do 8-bit file transfer from ASCII devices. Yale University did a lot of work on the microcode, and IBM "assumed" it into a very profitable product.
It was a *really* simple, elegant device -- it was LOTS simpler than either the Series/1 or the 3174 AEA (ASCII Emulation Adapter), and was pretty much the only way to do graphics support for things like Tektronix tubes, Zeta plotters for RSCS, etc. David Boyes Sine Nomine Associates > -----Original Message----- > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On > Behalf Of Scott Ray > Sent: Monday, July 17, 2006 2:01 PM > To: [email protected] > Subject: Re: Any resale value for an MP2003, 3174, 7171 > > What is a 7171? > > -----Original Message----- > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On > Behalf Of George Haddad > Sent: Monday, July 17, 2006 1:40 PM > To: [email protected] > Subject: Re: Any resale value for an MP2003, 3174, 7171 > > Scott Ray wrote: > > I might be interested... let me check.. > > > > > Interested in the 7171 ? > >
