Commodore Amiga A500 Technical Reference Manual page 129

OUTPUT: AL
=
CHAR READ (if recognized, else 0)
AH
=
ATTRIBUTE (COLOR) (If recognized, else 0)
All characters above 80h are recognized if the RAM font
vector is other than 0, else not
WRITE CHAR & ATTRIBUTE AT CURSOR POSITION (AH
=
09H)
INPUT: BH
=
ACTIVE DISPLAY PAGE
CX
=
NUMBER OF TIMES TO WRlTE
CHARACTER
AL
=
CHAR TO WRlTE
BL
=
CHARACTER ATTRIBUTE
OUTPUT: None
WRITE CHAR AT CURSOR POSITION (AH
=
OAH)
INPUT: BH
=
ACTIVE DISPLAY PAGE
CX
=
NUMBER OF TIMES TO WRlTE
CHARACTER
AL
=
CHAR TO WRlTE
BL
=
Character Attribute if in a graphics mode
otherwise ignored
OUTPUT: None
SET COLOR PALETTE (AH
=
OBH)
INPUT: BH
=
0 FOR BACKGROUND COLOR IN BL
1 FOR COLOR SET NUMBER IN BL
BL
=
BITS 0-4 IF BH
=
0
0 FOR COLOR SET GREENIREDIYELLOW
F BH= 1
1 FOR COLOR SET CYAN/MAGENTNWHITE
IF BH=1
WRlTE DOT (AH
=
OCH)
INPUT: DX
=
ROW NUMBER (MODE DEPENDENT)
CX
=
COLUMN NUMBER (MODE DEPENDENT)
AL
=
COLOR VALUE
OUTPUT: AH
=
?
READ DOT (AH
=
ODH)
INPUT: DX
=
ROW NUMBER (MODE DEPENDENT)
CX
=
COLUMN NUMBER (MODE DEPENDENT)
OUTPUT: AH
=
?
AL
=
COLOR VALUE