2018年2月3日 · Note that you can start more terminals by connecting to the same port (i.e., c3270 localhost:3270 again without changes), and they will connect to the other console devices after 010). In the same way, you can do telnet localhost 3270 for a telnet connection. Normally you want at least two terminals, one for the console and one for a user login ...

2020年4月10日 · IBM introduced the 3270 family of block mode terminals in 1971, for use with IBM mainframes (System/370 and successors). Then, in 1977, IBM introduced the 5250 family of block mode terminals for use with System/34 minicomputers, which was also used by the System/38 (1978), System/36 (1983), and AS/400 (1988).

2019年11月21日 · Based on the phosphors used for green and amber screens, this answer on Super User gives the following values: i.e. #FFB000 for dark amber, #FFCC00 for light amber, and variations around #33FF33 or #66FF66 for green.

2020年11月25日 · Since 3270 is a publicly documented protocol – and is easier to support now everyone uses it over TCP/IP (via TN3270) – many of these products actually still serve up the application over 3270. This can make the migration very seamless for end-users, continuing to use their existing 3270 terminal emulator, with (at worst) just some minor ...

2020年3月27日 · This question addressed the question of APL overstrikes on printing terminals. However, IBM also had 3270 video display terminals that supported APL, as well, and those, too, handled overstriking. ...

2024年2月12日 · *1 - The 3270 knew more than one single-key message, so adding only one key wouldn't help much. Even less is there a need to add a special interrupt service for only one, since the application gets all keys anyway. Both the 3270 PC and the 3270 AT used their own large keyboard with more than a dozen additional keys.

2023年2月7日 · When using a pre-built system image such as the "VM/370 sixpack" or "MVS Tur(n)key" under Hercules, when a user connects a 3270 terminal, a login screen comes up with a banned identifying the install (sixpack with one closer to the original VM/370 one, and Turnkey with a full custom one).

2019年1月21日 · As far as the mainframe was concerned, everything was either a full-blown 3270 or a plain TTY that only supported CR/LF/BS. Concurrent DOS Digital Research Concurrent DOS was the successor to MP/M-86 (which in turn was the 16-bit version of MP/M which was the multiuser version of CP/M).

2019年1月16日 · The original 3270 keyboards were heavy as well as big, since they had sheet metal cases rather than plastic. The original IBM PC keyboard repurposed the 10 left-hand keys as general purpose function keys, deleted the original 24 function keys, and compressed the layout of the right hand side to save space.

2022年1月11日 · While the 3270 offered a great way to offload low-level interactivity (aka editing) without leaving the basic terminal paradigm, later development stopped them being terminals but rather stations with local programming and local data processing.