Scanner and Console Teletype Service Routine

This document is an assembly source code file for the 'SCNSRF' Scanner and Console Teletype Service Routine (version 415), dated June 4, 1969. It contains detailed definitions of data structures, line parameters, interrupt service routines, and buffer management logic for scanner and teletype devices in the system. The routine handles console TTY operations, data set interactions, and includes specific logic for various teletype models and scanner line configurations.