Set Display Page; Scroll Up - Husky MP2500 Manual

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Set display page

Entry
Exit
Description

Scroll up

Entry
Exit
Description
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Chapter 21: INT 10H, Screen Handler
This function returns the lightpen address, in the IBM
BIOS, but MP2500 does not support connection of a
lightpen.
AH=05H
AL=page
Returns nothing
Selects the display page, in text modes (0..3).
AH=06H
AL=number of lines to scroll
BH=filler attribute
CH=top row
CL=left column
DH=bottom row
DL=right column
Returns nothing
Scrolls the area defined by CH, CL, DH and DL,
moving it up by the number of lines given by AL, filling
the 'blank' lines with the filler character given by BH.
If AL=00H, the area is cleared.
This function works in all screen modes. The IBM
BIOS function only works in text modes.
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