Motorola MC68306 User Manual page 148

CHRCHK
Figure 6-10. Serial Module Programming Flowchart (3 of 5)
6-40
A
FRCHK
HAVE
N
FRAMING ERROR
?
Y
SET FRAMING
ERROR FLAG
PRCHK
HAVE N
PARITY ERROR
?
Y
SET PARITY
ERROR FLAG
A
GET CHARACTER
FROM RECEIVER
SAME
Y
AS CHARACTER
TRANSMITTED
?
N
SET INCORRECT
CHARACTER FLAG
B
MC68306 USER'S MANUAL
B
RSTCHN
DISABLE CHANNEL'S
TRANSMITTER
RESTORE CHANNEL
TO ORIGINAL MODE
RETURN
MOTOROLA