Re: [Gimp-print-devel] stc740 now understands ESC(U, but ...

[Karl H. K. <kh...@kh...>]

I'm feeling pretty lonely in this thread :-)

Karl Heinz Kremer <kh...@kh...> said: 

> On Wed, Jan 26, 2000 at 08:40:05AM -0500, Karl Heinz Kremer wrote:
> > Here is what I found out late last night: With the latest CVS
> > version my Epson stc740 handles the set unit command correctly,
> > but still produces only blank pages. I looked at the ESC/P code
> > and it looks like there is an extra byte after the ESC(S command.
> > I was too tired at that time to actually find the problem in 
> > the source code, so this either has to wait until tonight, or
> > until somebody else will have a chance to look at it.
> 
> ... OK, here is more information: There is an extra instance of
> ESC(S on line #815 in print-escp2.c. This only outputs the command,
> but does not print any parameters. When I remove this command I
> am having problems with ESC(c. The documentation I have lists
> four parameters for ESC(c, the code however uses eight. Is it
> possible that the MODEL_VARIABLE_4 printers use different types
> of "Set page format" commands? Which printers do use eight 
> parameters?
> 

I went through the documentation on the Epson developer site and
found the answer to my question: The 750 and 1200 are using the
"even newer" command set that is not understood by the 440/640/740
and 900 printers. They are however treated the same way in the 
plugin. I guess we have to add one more model variant to deal
with these printers. But before we introduce a new model group,
it probably makes sense to look at all Epson printers and see
if there are more differences. Does anybody have or know about
a matrix that lists all printers and the commands they support?

Karl Heinz