SEETXT Subroutine (338)
| 8-109
|
Michael S. Wolfberg, Moore School of Electrical Engineering,
University of Pennsylvania, Philadelphia, Pennsylvania
SEETXT is a subroutine for the DEC 338 Display which can
be called instead of the normal typeout subroutine. In
addition to typing, it displays all printed characters on the
screen corresponding to the last twenty lines which have
been typed out.
The program includes the option of suppressing the typing so
that output can occur at a much higher rate than ten characters
per second. The user has the option of controlling the
length of a delay loop in the subroutine so that output rate
may range from nearly immediate to Teletype rate.
The maximum number of lines displayed, the scale, and
intensity may be altered at any time. There is also the
option of clearing the screen or displaying a blinking
marker at the current typing position.
| Minimum Hardware: | PDP-8 with 338 Display
|
| Catalog:
| November 1969
|