Compuprint 10200 Programmer Manual User Manual
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Interfaces
214
PrtBusy (Busy)
Compatibility Mode:
Driven high to indicate that the printer is not ready to receive data.
Negotiation Phase:
Reflects the present state of the printer's forward channel.
Reverse Data Transfer
Phase:
Nibble Mode:
Data bits 3 then 7, then forward channel busy status
Byte Mode:
Forward channel busy status.
Reverse Idle phase:
Forward channel busy status.
AckDataReq (PError)
Compatibility Mode:
Driven high to indicate that the printer has encountered an error in the paper
path. The printer shall set nFault low whenever it sets PError high.
Negotiation Phase:
Set high to indicate 1284 support, then follows nDataAvail (nFault).
Nibble Mode:
Data bits then 6.
Reverse Data Transfer
Phase:
Byte Mode:
same as nDataAvail (nFault)
Reverse Idle Phase:
Set high until host requests data transfer, then follows nDataAvail (nFault).
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