SECTION 6
Conversions and Interfaces
6-46 PEN*KEY
R
6200/6300 Hand-Held Computer Programmer’s Reference Guide
INT 10h, Function AX = 1122h: Set INT 43h for ROM 8x14 Font
BIOS
Sets INT 43h vector to point to default ROM BIOS 8x14 font and updates video
ROM BIOS data area. Video controller not reprogrammed. Provides font
selection in graphic display modes.
On Entry:
AH = 11h
AL = 22h
BL = 00 = Character rows specified by register DL
01 = 14 rows
02 = 25 rows
03 = 43 rows
CX = Bytes per character
DL = Character rows per screen
On Return:
None
INT 10h, Function AX = 1123h: Set INT 43h for ROM 8x8 Font
BIOS
Sets INT 43h vector to point to default ROM BIOS 8x8 font and updates video
ROM BIOS data area. Video controller not reprogrammed. Provides font
selection in graphic display modes.
On Entry:
AH = 11h
AL = 23h
BL = 00 = Character rows specified by register DL
01 = 14 rows
02 = 25 rows
03 = 43 rows
CX = Bytes per character
DL = Character rows per screen
On Return:
None
INT 10h, Function AX = 1124h: Set INT 43h for ROM 8x16 Font
BIOS
Sets the INT 43h vector to point to the default ROM BIOS 8x16 font and updates
the video ROM BIOS data area. The video controller is not reprogrammed.
Provides font selection in graphic display modes.
On Entry:
AH = 11h
AL = 24h
BL = 00 = Character rows specified by register DL
01 = 14 rows
02 = 25 rows
03 = 43 rows
CX = Bytes per character
DL = Character rows per screen
On Return:
None
6. Conversions and
Interfaces