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/rfc311.txt | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 doc/rfc/rfc311.txt (limited to 'doc/rfc/rfc311.txt') diff --git a/doc/rfc/rfc311.txt b/doc/rfc/rfc311.txt new file mode 100644 index 0000000..4830d99 --- /dev/null +++ b/doc/rfc/rfc311.txt @@ -0,0 +1,112 @@ + + + + + + + UCSB Computer +NETWORK WORKING GROUP Research Lab. +REQUEST FOR COMMENTS # 311 Roland F. Bryan +NIC #9341 29 February 1972 + + + NEW CONSOLE ATTACHMENTS TO THE UCSB HOST + + + + The MLC/360M + --------------- + + The UCSB 360-75 is equipped with an interface unit that allows + attachment of any type of I/O device to the Multiplexor Channel and + for that device to be operated by program control as though it were a + standard IBM Control Unit. The interface, referred to as the + Multi-Line Controller/360M (MLC/360M), operates on the Multiplexor + Channel and provides 32 independently addressed I/O connections that + are grouped into 16 pairs to accommodate full- duplex I/O operation. + Each input group has a 16-bit input buffer plus related synchronizing + and control logic to make it a stand-alone control unit on the 360 + channel. Similarly, each output group has a 32-bit buffer plus logic. + Attachment is achieved by connection through a data-set type connector + and I/O signal levels conform to EIA standards (RS-232 Spec.). + + + Both the I/O group hardware and the supporting software for the + MLC/360M are readily modified to produce any variations required for + attachment and operation of non-standard devices. + + + Since our primary support was for 201B data-sets at 2400 baud, we + first implemented the 16 I/O group pairs to accommodate this type of + modem in our time-shared user environment. The I/O groups have now + been variously modified to support a wide range of applications, from + 300 baud acoustic coupled use to 9600 baud for multi-station classroom + operation. + + + + New Consoles + --------------- + + + In addition to our standard attachments, which are mostly Culler-Fried + graphic display consoles and educational classrooms + + + + + [Page 1] + + using such consoles, we have a Tektronix 4002A and an NIH General + Purpose Graphics Terminal (GPGT). + + + The Tektronix terminal can now be operated on the ARPANET and will + provide our users with upper and lower case ASCII for easier operation + with other sites. A report on this console's capability will be + forthcoming. + + + The GPGT was developed by the University of IOWA for use in + Bio-Medical applications. The unit is a delay-line refreshed video + display with graphic capability and is the only dynamic type display + in use on our host computer at present. We are evaluating its + performance in our On-Line System environment. Since a user at this + terminal is also able to reach into the network, we will have some + future comments on its operation for interested persons. + + + + + + + + + + + + + + [ This RFC was put into machine readable form for entry ] + [ into the online RFC archives by BBN Corp. under the ] + [ direction of Alex McKenzie. 12/96 ] + + + + + + + + + + + + + + + + + + + [Page 2] + -- cgit v1.2.3