NEC CP/M-86 - Roll up Screen

Advanced BIOS Functions
CMD# 4 - Roll Up Screen
This command enables the programmer to roll up the specified number of lines on
the screen, as shown in Figure 6-6. The function uses only the display request block
fields listed below. The contents
of the remainder of the area are ignored.
CMD#
LA
4
Number of lines to roll up
If the number of lines to roll up exceeds the number of lines that
have been written, the next line is erased.
YJ[)IO ""1.l\10R~
OlD
ROil 1'1'
_
_ 6
-----
27
50 ______ -4---'---'---'--' ............ ~
'" I \\
Figure 6-6 Roll Up Screen
6-25