When you select a mode for port operation, the parport suite uses the IEEE 1284 mode negotiation protocol to write the requested mode as an extensibility byte.
There is another way to do this which is to use a daisy chain command byte to, for example, select device x in ECP mode. This is an old mode which is no longer in the standard and which is officially deprecated.
After much experimentation I have discovered that the device with which I am trying to communicate only supports this old, deprecated mode of sleecting the address. Any ideas as to what I should try to do?
Regards
John
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This archive was generated by hypermail 2b29 : Mon Feb 12 2001 - 05:05:50 EST