On Sat, 9 Aug 2014 16:22:11 -0500, Paul Gilmartin wrote: >On Sat, 9 Aug 2014 14:11:55 -0700, Jon Perryman wrote: > >>What makes a fullscreen editor not a line mode editor? I can't think of any >>ISPF edit commands that require full screen features other than entering the >>command thru the command area in the screen. Granted, the full screen >>features make life easier and the command area is very small. >> >Imagine I have a VT-100-type TELNET TSO session. Can I use ISPF Edit, >however cumbersomely in that session? (Very hypothetical; kinda like >enumerating and contrasting the different ways to clear a register in >assembler code, frequently discussed in these fora.) > Back in the 80's I worked at a place that had an IBM 7171 ASCII Device Attachment Control Unit, to which we could connect terminals like VT100's and, ISTR, a line from a modem to which a PC running a VT100 emulator could dial in, logon, and use ISPF.
From a bitsavers manual: The IBM 7171 also provides ASCII to IBM 3270 protocol conversion. The IBM 7171 appears to the host processor as one or two IBM 3274 model1D control units. The attached ASCII display terminals and printers appear to the host system as IBM 3278 or 3277 terminals and IBM 3286 printers. IBM 3270 emulation allows the IBM 7171 attached devices to communicate with IBM interactive packages while utilizing existing 3270 programs with no host modification required. IBM 3270 emulation extends the capabilities of the ASCII device by providing 3270 type functions. Bill ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
