Scroll Mode Selection - Zenith Z-100 Reference Manual

Table 2.4 indicates the scroll modes obtainable with the VS command. The scroll
mode determines the manner in which information on the screen is handled
once the screen is full.
Table 2.4. Scroll Mode Selection
CODE SCRO L L MODE
Software compatible scroll mode.
Information is scrolled by actually moving screen memory contents.
Also the default scrolling mode.
Hardware jump scrolling.
Incompatible with some applications packages but faster than the
software mode.
May only be used when in 80 x 25 text or the graphics video modes.
Smooth scrolling.
Usable only in the graphics modes.
Moves characters upward in small segments resulting in a more pleas-
ing and readable display.
Example: VM6 S2 RETURN
In this example, the smooth scrolling mode would be selected.
System Operating Features
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