Sharp MZ-5500 - Page 101

- - - - -
°Scroll inside the window
CRT, advance
CRT, reverse
°Scroll can be attained by a change in VMA.
°Scrolling stops when it r e ach e s the end (one window in use).
VRAM
CRT
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Or a
single
line revision
*When two windows are used in apart of the screen, it permits scrolling
"
from the bot tom end to the top end of the VRAM J whi.ch looks as if
scrolling within one window. In such an occaslon,
the following screen
\
setup and seraIl may be possible.
(i) Two windows scrolling in different directions.
(ii) One window scrolling and two windows not scrolling.
VRAM
CRT
5 A02
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-},Whe n the displ ay is divided vertically as shown above, each window can be
serolied in the same direction at the same time by changing SADl and 2 ,
without changing VMA.