NorthStar HSIO-4 User's & Technical Manual page 36

002A
002A
002A
002A DB1B
E602
002C
002E
28FA
0030 DB1A
0032 E67F
0034 C9
0035
0035 DB1B
0037 E601
0039 28FA
003B 78
003C D31B
003E C9
003F
003F
003F
003F
003F DB1F
0041 E602
0043 28FA
0045 DB1E
0047 E67F
0049 C9
004A
004A DB1F
004C E601
004E 28FA
78
0050
D31F
0051
C9
0053
North Star HSIO-4
Port C input and output routines
IN PORTC+USTA
CINC
ANI 2
JRZ CINC
IN PORTC+UDAT
ANI 7FH
RET
COUTC IN PORTC+USTA
ANI
1
JRZ COUTC
MOV A,B
PORTC+USTA
OUT
RET
Port D input and output routines
CIND IN PORTD+USTA
ANI 2
JRZ CIND
IN PORTD+UDAT
7FH
ANI
RET
PORTD+USTA
COUTD IN
ANI 1
JRZ COUTD
MOV A,B
OUT PORTD+USTA
RET
;Check USART status
;Get RxReady bit
;Wait till character
;Read character
;Mask off top bit
;Check USART status
;Get TxReady bit
;Wait tili ready
;Output char is in B
;Output character
;Check USART status
;Get RxReady bit
;Wait till character
;Read character
;Mask off top bit
;Check USART status
;Get TxReady bit
;Wait tili ready
;Output char is in B
;Output character
31 User/Technical Manual
ready
reg
ready
reg