SECTION 6
Conversions and Interfaces
6-38 PEN*KEY
R
6200/6300 Hand-Held Computer Programmer’s Reference Guide
INT 10h, Function AH = 0Eh: Teletype Character Write
BIOS, FONTMAP
Writes characters to display as if serial terminal. Functions in all display modes.
Carriage return homes cursor on current line. Line feed advances cursor to next
line. Backspace backs up cursor to beginning of current line. Bell beeps buzzer.
All other characters are displayable. Cursor is advanced after writing character.
If end of line reached, cursor advances to next line. If last line position of display
written to, display scrolls up one line.
On Entry:
AH = 0Eh
AL = Character to write
BH = Page
BL = Foreground color in graphics mode
On Return:
None
INT 10h, Function AH = 0Fh: Return Current Video State
BIOS, FONTMAP
Returns information stored in Function 0 and 5 locations.
On Entry:
AH = 0Fh
On Return:
AH = Number of screen columns
AL = Mode currently set
BH = Active display page
INT 10h, Function AX = 1000h: Set Palette Register
BIOS
Sets the selected palette register to the color value in BH.
On Entry:
AH = 10h
AL = 00h
BH = Color value
BL = Palette register (00ć0Fh)
On Return:
None
INT 10h, Function AX = 1001h: Set Border Color
BIOS
Sets the color of the screen border to the color value in BH.
On Entry:
AH = 10h
AL = 01h
BH = Color value
On Return:
None
6. Conversions and
Interfaces
