RE: [hpoj-devel] preliminary PML/scanning support

[PASCHAL,DAVID (HP-Roseville,ex1) <dav...@hp...>]

Joe Piolunek wrote:
> The clock-setting feature works on the 600. Thanks for adding it. 
> 
> 'ptal-hp mlc:par:0 display' returns the lcd contents.
Hi, Joe.  Thanks for the success report.

> 'ptal-hp mlc:par:0 device' returns "(unavailable)" for each 
> OID requested. I 
> found the OIDs in ptal-hp.c and compared them to the output from 'hpo 
> listpml'. Those I looked for weren't in the list. Maybe the 
> 600 doesn't 
> support them?
It appears that the OfficeJet 500/600/700 and PSC 300 series don't support
any of these OIDs, just as you observed.

I just checked in some more ptal-hp changes to improve scanning somewhat.
Black&white scanning (-bw and -bwht) should now work on the OfficeJet
500/600/700 and PSC 300 series, but apparently only at 300 DPI (which is now
the default for these models).  Greyscale and color don't work yet on these
models, and nothing works yet on the T series.  I'm currently working with
an engineer in the All-in-One division to try to resolve the remaining
problems, and I should be able to make some more progress next week.

BTW, if you get ptal-mlcd error messages about lookupChannel failures while
scanning, try invoking ptal-mlcd with the "-porttype spp" switch.  I think
it might be some sort of parallel-port communication issue.

David