attachment-0001
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META content="MSHTML 5.00.2614.3500" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Hello all!</FONT></DIV>
<DIV> </DIV>
<DIV>I had a problem connecting to 1284 with 1284.4 based printer.</DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Though we have been succesfull in getting the
printer ID through nibble mode (04 command while negotiation). But we have
not be successful in implementing the bi-di feature using 1284.4 and using
00 command while negotiation. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>For example: If we send a Init command in the
compatibility mode and negotiate for nibble mode in reverse data channel, the
negotiation is successful but the interface enters the Host Busy Data Not
Available phase, when we are actually expecting a InitReply from the printer.
Even if enter the HNB-DNA phase (Idle Phase), there is no response from the
printer. We know for sure the printer supports Bi-Di and also 1284.4
protocols.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I am not sure if we have done the right thing. I
have both the 1284 and 1284.4 standards withme, but neither informs how to send
the command (whether the Init command should be sent in the compatibility mode
or other mode) and receive the corresponding reply.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I request anybody who have worked on the driver for
the printers to guide us in getting a solution and if there are any other forums
where I can get some help.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks & Regards,</FONT></DIV>
<DIV><FONT face=Arial size=2>Subramanya T. N.<BR>Prayog Automation
&<BR>Control Electronics,<BR>#98-E, 1st Floor, 16th Main
Road,<BR>Vijayanagar,<BR>BANGALORE - 560 040.<BR>Ph.: 91-80-3382399<BR>email: <A
href="mailto:prayog_automation@vsnl.com">prayog_automation@vsnl.com</A></FONT></DIV></FONT></DIV>
<DIV><FONT face=Arial size=2>Subramanya T. N.<BR>Prayog Automation
&<BR>Control Electronics,<BR>#98-E, 1st Floor, 16th Main
Road,<BR>Vijayanagar,<BR>BANGALORE - 560 040.<BR>Ph.: 91-80-3382399<BR>email: <A
href="mailto:prayog_automation@vsnl.com">prayog_automation@vsnl.com</A></FONT></DIV></BODY></HTML>