NCR Corp has added two new members to its TowerView family of X-windowing graphics workstations: the modular X-Stations for business and technical users come in 15 and 19 versions. The new 68020-based models come in modular form to accomodate future display needs; offer X11.3 Server with Backing Store and Save Under support; there is automatic host application execution without user intervention; RS-232-C SLIP communications; full support of the TCP/IP network protocol; TFTP and downloadable X Server; 100 dots per inch resolution; support for 2 additional third party logic boards; multi-resolution video up to 1,280 by 1,024 pixels; 70Hz refresh rate on non-interlaced display; and local VT100 emulation. NCR plans to add colour X-Stations and support for the DECnet and Network File System network protocols next year. The 15 TowerView modular workstation is $3,400, the 19 $4,200; ships in December.