Specifications

SECTION III
3.3 Scrolling and Flipping
The contents of the terminal's memory (what you enter at the keyboard and data received
from the host) are displayed on the screen. The contents of the screen are stored in the
terminal's memory.
"Scrolling" is the process of moving data from one line to an adjacent line (up or down).
Data scrolls past the terminal's screen, like a film scrolls through a film projector. Data also
scrolls in memory: as new data is received, existing data is pushed "up" a line.
To set the rate at which data scrolls,
in Set-Up (Line 2), choose
JUMP ON or
SM-n
where n =the number of scanning lines persecond (1,2,4,8).
If scrolling is set to JUMP ON, data scrolls as fast as it is received.
3.3.1 Scrolling and Page Size
If there were a one-to-one match between memory and screen (where each handled 24
lines of data), a line of data which scrolls "off" the screen would also scroll "out of" memory.
On the Ampex 230 plus, the screen handles 24 lines of data, but memory handles 96
lines. In this situation, the screen acts as a window into memory (see Figure 3-2).
Screen size matches
memory size
Memory size exceeds
screen size;
the screen acts as a
window into memory
Figure 3-2. Screen Relative to Memory Size
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