Intermec PEN*KEY 6100, Programmer'S Reference Manual, Page: 175 / 328

SECTION 6 Conversions and Interfaces
PEN*KEY
R
6100 Computer Programmer’s Reference Guide 6-39
INT 10h, Function AH = 06h: Scroll Active Page Up
BIOS, VROTATE
Allows active display page scroll up the number of lines indicated by AL. If AL =
0, the entire window is blanked. Information outside the scroll window indicated
by the values in CH, CL, DH, and DL is not altered. Works in all display modes.
For 320x200 graphics modes, the position that determines the window area is
based on a 40x25 display. For 640x200 and 640x480 graphic modes, the position
used is based on a 80x25 display.
On Entry:
AH = 06h
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 = 07h: Scroll Active Page Down
BIOS, VROTATE
Allows the active display page to scroll down the number of lines indicated by
AL. If AL = 0, the entire window is blanked. Information outside the scroll winĆ
dow indicated by the values in CH, CL, DH, and DL is not altered. Works in all
display modes. For 320x200 graphics modes, the position used to determine the
window area is based on a 40x25 display. For 640x200 and 640x480 graphic
modes, the position used is based on a 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 Attribute & Character at Cursor Position
BIOS, VROTATE
Reads character and attribute at current cursor position for selected page.
Works for all video modes. The page can be inactive 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