Split Display [+]; Draw Ellipse/Circle [+] - Husky MP2500 Manual

Split display [+]

Entry
Exit
Description

Draw ellipse/circle [+]

Entry
Exit
192
AH=66H
AL=control bits
BH=top row of lower section of LCD (0..7)
BL=top row of lower section of virtual screen (0..24)
Returns nothing
Splits the LCD screen horizontally into two parts and
assigns each to a separate part of the virtual screen.
Each part may be scrollable or fixed.
The control bits are as follows:
D0, D1: if 01, no split. If 10, split.
D2: if 0, no scrolling of top part. If 1, allow scrolling
D3: if 0, no scrolling of bottom part. If 1, allow scrolling
If scrolling is allowed, that part of the LCD will scroll to
display output in that part of the virtual screen.
If scrolling is not allowed, that part of the LCD will
remain fixed in the current part of the virtual screen
(although you can change the view by moving the
cursor into the window and using function 74H).
This facility can also be controlled by using the HOT
key (WH in the default (developer) keyboard mode,
SWH in user keyboard mode).
AH=70H
DS=data segment of data buffer
BX=offset into segment
Returns nothing
H MP2500 System Developer's Guide
USKY