SECTION 6
Conversions and Interfaces
PEN*KEY
R
6200/6300 Hand-Held Computer Programmer’s Reference Guide 6-35
INT 10h, Function AH = 07h: Scroll Active Page Down
BIOS, FONTMAP
Allows active display page to scroll down number of lines indicated by AL. If AL
= 0, entire window is blanked. Information outside scroll window indicated by
CH, CL, DH, and DL values is not altered. Works in all display modes. For
320x200 graphics modes, position determining window area based on 40x25
display. For 640x200 and 640x480 graphic modes based on 80x25 display.
On Entry:
AH = 07h
AL = Number of lines to scroll
BH = Attribute for blank lines
CX = UpperĆleft corner
CH = Row
CL = Column
DX = LowerĆright corner
DH = Row
DL = Column
On Return:
None
INT 10h, Function AH = 08h: Read Character and Attribute at Cursor Position
BIOS, FONTMAP
Reads the character and the attribute at the current cursor position, for the
selected page. Works for all video modes. The page need not be active for this to
operate correctly.
On Entry:
AH = 08h
BH = Display page number
On Return:
AH = Attribute of character
AL = Value of character at the cursor position
6. Conversions and
Interfaces
