From 4bfd864f10b68b71482b35c818559068ef8d5797 Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Wed, 27 Nov 2024 20:54:24 +0100 Subject: doc: Add RFC documents --- doc/rfc/rfc110.txt | 227 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 doc/rfc/rfc110.txt (limited to 'doc/rfc/rfc110.txt') diff --git a/doc/rfc/rfc110.txt b/doc/rfc/rfc110.txt new file mode 100644 index 0000000..9d85f11 --- /dev/null +++ b/doc/rfc/rfc110.txt @@ -0,0 +1,227 @@ + + + + + + +Network Working Group J. Winett +Request for Comments: 110 MIT Lincoln Laboratory +NIC: 5809 25 March 1971 + + Conventions for Using an IBM 2741 Terminal as a User Console for + Access to Network Server Hosts + + Disclaimer + + This material has not been reviewed for public release and is + intended only for use with the ARPA network. It should not be quoted + or cited in any publication not related to the ARPA network. + + TO: NIC + FROM: Joel M. Winnet (LL) + SUBJECT: Conventions for Using an IBM 2741 Terminal as a User + Console for Access to Network Server Hosts + + An IBM terminal can be used to key in 92 different codes. These + include 88 graphics plus the 4 controls SP, BS, HT, and NL. Each of + these have defined ASCII codes except the cent graphic ([1]) and the + New Line Control (NL). When the NL character is keyed, the program + receiving the keyboard input can translate this signal into the + appropriate line end signal for the host which is being used. That + is, to a NL, CR, or LF code whichever is appropriate. There are 7 + other ASCII graphic characters ( {, }, [, ], ^, \, `) and 31 other + ASCII controls which cannot be keyed on a 2741 terminal. A + convention must be established so that all 128 ASCII codes can be + keyed from a 2741 terminal. This requires that one character be + chosen as an escape (or prefix) character which,a together with + following characters, can be converted into any desired ASCII code. + In addition to this escape character, there are three other functions + which are usually indicated by the typing of a single character key. + These are: + + a) character delete -- to cause this character and the preceding + character in the input line to be deleted. + + b) line delete -- to cause this character and all previous + characters in the current input line to be deleted. + + c) logical line end -- to cause all characters keyed after the + last logical line end character or last NL character up to this + character to be considered as one logical line with this + character being treated as if the NL key were entered. + Characters following the logical line end character up to + another logical line end character or a NL character are used + for form another input line. + + + +Winett [Page 1] + +RFC 110 Conventions for Using an IBM 2741 25 March 1971 + + + Since characters keyed are normally sent to the Server Host, a method + must be defined to allow characters keyed to be interpreted by the + user program. A system escape character can be used for this + purpose. On character at a time systems, the characters keyed + between two system escape characters can be interpreted by the user + program. On line at a time systems, characters keyed after the + system escape character and up to and including a NL character can be + interpreted by the user program. Lines interpreted by the user + program are not sent to the Server Host. + + For those host systems which require use of the INS or INR network + control commands, a method must be defined for causing these commands + to be sent. These can be sent on a command to the user program + either after keying the system escape character or through the use of + the 'attention' button on a 2741 terminal. This choice will depend + on the characteristics of the terminal user's operating system. + + Other commands to the user program might be to: + + a) suppress typeout of received messages + + b) restore typeout of received messages + + c) direct received message to a disk file + + d) direct keyed input to a disk file + + e) abort the user program + + The following characters are recommended for the special functions + listed above: + + 1. character escape $NOT [1] + 2. system escape | + 3. character delete @ + 4. line delete $CENT [1] + 5. logical linend # + + For the 7 ASCII graphics not on a 2741 terminal, the following + character escape and graphic pairs are recommended: + + $NOT < to translate to [ + $NOT > to translate to ] + $NOT ( to translate to { + $NOT ) to translate to } + $NOT " to translate to ^ + $NOT / to translate to \ + $NOT ' to translate to ` + + + +Winett [Page 2] + +RFC 110 Conventions for Using an IBM 2741 25 March 1971 + + + To permit the special function characters to be keyed, the following + character escape and graphic pairs are recommended: + + $NOT - to translate to $NOT + $NOT : to translate to | + $NOT , to translate to @ + $NOT . to translate to $CENT + $NOT = to translate to # + + To key in the ASCII control codes, it is recommended that the + character escape followed by two letters be used to specify a control + code. These two letters are derived from the mnemonic name of the + ASCII control function and are as follows: + + $NOT AC to translate to ACK X'06' + $NOT BE to translate to BEL X'07' + $NOT BS to translate to BS X'08' + $NOT CA to translate to CAN X'18' + $NOT CR to translate to CR X'0D' + $NOT D1 to translate to DC1 X'11' + $NOT D2 to translate to DC2 X'12' + $NOT D3 to translate to DC3 X'13' + $NOT D4 to translate to DC4 X'14' + $NOT DE to translate to DEL X'7F' + $NOT DL to translate to DLE X'10' + $NOT EM to translate to EM X'19' + $NOT EN to translate to ENQ X'05' + $NOT EO to translate to EOT X'04' + $NOT ES to translate to ESC X'1B' + $NOT EB to translate to ETB X'17' + $NOT EX to translate to ETX X'03' + $NOT FF to translate to FF X'0C' + $NOT FS to translate to FS X'1C' + $NOT GS to translate to GS X'1D' + $NOT HT to translate to HT X'09' + $NOT LF to translate to LF X'0A' + $NOT NA to translate to NAK X'15' + $NOT NU to translate to NUL X'00' + $NOT RS to translate to RS X'1E' + $NOT SI to translate to SI X'0F' + $NOT SO to translate to SO X'0E' + $NOT SH to translate to SOH X'01' + $NOT SP to translate to SP X'20' + $NOT ST to translate to STX X'02' + $NOT SU to translate to SUB X'1A' + $NOT SY to translate to SYN X'16 + $NOT US to translate to US X'1F' + $NOT VT to translate to VT X'0B' + + + +Winett [Page 3] + +RFC 110 Conventions for Using an IBM 2741 25 March 1971 + + + Note that the controls SP, BS, and HT can be specified using the + character escape character or directly by keying the appropriate key + on a 2741 terminal. + +Endnote + + [1] The following identifiers are substituted for graphics not in + ASCII: + + $CENT Cent sign + $NOT Logical NOT ("bent bar") + + See the PDF version of this document for graphics that cannot be + represented in ASCII format. + + + [This RFC was put into machine readable form for entry] + [into the online RFC archives by Lorrie Shiota, 10/02] + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +Winett [Page 4] + -- cgit v1.2.3