Oki Microline 3320 - Communication Procedure Flowchart

C – 5
Ready/Busy
Received one
character?
Yes
Is DSR valid?
No
Buffer overflow?
Error?
Parity error
No error
Store the received
character in buffer.
Is the
printer in DESELECT
state or is the paper
low?
No
No
Yes
Yes
No
DSR High?
Yes
Store 40 H in buffer.
Yes
Yes
No
Yes
Is remaining
buffer space < 256?
Yes
No
Turn on the SSD signal.
Turn off the SSD signal.
Printer busy?
No
Output one character from the
buffer to printer.
No
Yes
No
Has 200 ms or
1s elapsed after SSD was
turned on?
Is remaining
buffer space > 256 during
receive time out?
2.3 Communication Procedure Flowchart
2.3.1 Mode a
Figure C-2-2