Compuprint 10200 Programmer Manual Manuel d'utilisateur télécharger pdf (Page 221)

Interfaces

217

nDataAvail (NFault)

Compatibility Mode: Set low to indicate that an internal printer error has occurred.

Negotiation Phase: Set high to acknowledge 1284 compatibility. In Nibble or Byte Mode it is

then set low to indicate printer-to-host data is available following host

setting HostBusy (nAutoFd) high.

Nibble Mode: Set low to indicate that printer is ready to send to host.

Then used to send data bits 0 then 4.

Reverse Data Transfer

Phase:

Byte Mode: Used to indicate that data is available.

Reverse Idle Phase: Used to indicate that data is available.

nDataAvail (NFault)

Compatibility Mode: Set low to indicate that an internal printer error has occurred.

Negotiation Phase: Set high to acknowledge 1284 compatibility. In Nibble or Byte Mode it is

then set low to indicate printer-to-host data is available following host

setting HostBusy (nAutoFd) high.

Nibble Mode:

Set low to indicate that printer is ready to send to

host. Then used to send data bits 0 then 4.

Reverse Data Transfer

Phase:

Byte Mode:

Used to indicate that data is available.

Reverse Idle Phase: Used to indicate that data is available

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Compuprint 10200 Programmer Manual Manuel d'utilisateur Page 221