FENIX IMVICO
TK-41 OPERATION MANUAL
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3.5.9- PARALLEL PORT ERROR DETECTION FLOW CHART
Fig.3.13-
Serial port error detection flow chart.
BEGIN
END
WRITE BYTE
IN DATA BUS
/STB PULSE
/ACK = 0
YES
NO
END OF
TRANSMISSION
YES
NO
READ PINS
ST1 & ST2
IDENTIFY
ERROR
/ERR = 0
YES
NO
PE = 1
YES
NO
BUSY = 1
YES
NO
Paper-near-end
YES
NO
