HP Vectra Technical Reference Manual page 46

On Exit: AH
=
Light Pen state
Data Definition
o
Not activated
1 Activated
BX
=
Horizontal pixel position of light pen
CH
=
Vertical pixel position of light pen (200 line mode)
DH
=
Row position of light pen
DL
=
Column position of light pen
Registers Altered: AH, BX, CH, DX
This function sets the active display page in the alphanumeric mode. Valid page numbers are 0
through 7 for 80 X 25 modes, and 0 through 7 for 40 X 25 modes. This function is not valid
for graphics modes.
On Entry: AH
=
F1 O_SET_PAGE (OSH)
AL
=
Page number (0 through 7)
On Exit: No values returned.
Registers Altered: AX
F10_SCROLLUP (AH
=
06H)
This function scrolls the contents of a window up a specified number of lines. The window is
defined by the row and column addresses stored in the CX and DX registers. The number of lines
to be scrolled is passed in register AL. If AL is set to 0, the function interprets this as a command
to scroll all lines.
On Entry: AH
=
F1 O_SCROLl-UP (06H)
AL
=
Number of lines to scroll (0
=
scroll all)
BH
=
Attribute to place in blanked lines
CH
=
Row address of upper left corner of window (0... 24)
CL
=
Column address of upper left corner of window (0 79)
DH
=
Row address of lower right corner of window (0 24)
DL
=
Column address of lower right corner of window (0 ...79)
Video 37