2.2 The IBM 7171 ASCII Device Attachment Control Unit - Index of

2.3.1 ASCII TerminalsASCII Display TerminalsBoth IBM and non-IBM ASCII display terminals can be attached. All terminaldependent information is contained in Terminal Definition Tables, which can becustomized by the user. Tables for the following terminals, or their equivalents, areprovided:• IBM 3101 (Models 1 or 2 in character mode)• IBM Personal Computer 1• Datamedia 1520/1521/3045 2• DEC VT100 3• LSI ADM 3A/31 4• TeleVideo 912/920/950 5IBM 3161 and IBM 3163• ROLM Cypress, Cedar, and Juniper Desktop Products 6.Hardcopy output of the current screen contents of terminals with local print capabilitycan be obtained on printers attached to an auxiliary device port.Basically, the attached ASCII display terminals appear to the host system asupper/lower case IBM 3278 or 3277 terminals attached to one or two IBM3274-1D control units. ASCII APL terminals are emulated as either a 3277 APLdisplay station with the Data Analysis feature or a 3278 APL display station withthe APL/Text feature. Refer to section 2.6.2, "ASCII Display TerminalRequirements" on page 2-11 for the minimum requirements for attached ASCIIterminals.3270 Emulation: The IBM 7171 provides support for ASCII display terminalswhen used with interactive host applications running under VM/SP or MVS. Aslong as existing IBM access methods are used within VM/SP or MVS, the userneed not be concerned with the details of the program interfaces to the IBM 7171.Figure 2-3 lists the 3270 features that the IBM 7171 emulates.Many host applications, such as VM/SP CMS, have formatted screens with specificdata entry areas. The screen image that the user sees on a 3270 is almostexactly what he would see on, for example, an IBM 3101 connected via the IBM7171. The operations that can be performed on the 3270 can also be performed onan ASCII terminal.The IBM Personal Computer when running the IBM 3101 Emulation Program uses thestandard IBM3101 Terminal Definition Table.2 A product of Datamedia Corporation.A product of Digital Equipment Corporation.4 A product of Lear Siegler, Incorporated.5 A product of Tele Video Systems, Incorporated.6 Products of the ROLM Corporation.2-6 IBM 7171 Reference Manual and Programming Guide