HP Vectra Technical Reference Manual page 44

Video Driver Function Definitions
The following function definitions provide a detailed description of each of the functions in the
video driver.
This function sets the display mode of the video adapter. The new mode is determined by the
value passed in the AL register. Refer to the Vectra Technical Reference Manual, Volume I for
additional information on the various video display modes available on the MultiMode Video
Display Adapter.
On Entry: AH
=
F10_SET_MODE (OOH)
AL
=
Mode
Data Definition
00 40
x
25 Black and White Alphanumeric
01 40
x
25 Color Alphanumeric
02 80
x
25 Black and White Alphanumeric
03 80
x
25 Color Alphanumeric
04 320
x
200 Color Graphics
05 320
x
200 Black and White Graphics
06 640
x
200 Black and White Graphics
07 Only valid if a monochrome display adapter is present.
On Exit: No values returned
Registers Altered: AX
This function sets the size of the cursor displayed in the alphanumeric display modes. Each
character cell in the alphanumeric display modes is eight scan lines high. The cursor size is
defined by specifying the starting and ending scan lines within the character cell. The scan lines
are numbered from 0 (top of cell) to 7 (bottom). The starting and ending scan lines are passed in
registers CH and CL. This function performs no operation if the MultiMode Video Display
Adapter is in one of the graphics modes.
On Entry: AH
=
F10_SET_CURSIZE(01H)
CH
=
Starting scan line
CL
=
Ending scan line
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