RE: filmscanners: To Ed H; was: Vuescan for Minolta Scan Multi Pro

2001-11-24 Thread Joel Rittvo 

So there is a program that listens to the bus and logs everything that goes
through it?  Do they make any basic sense or are they like assembler or
machine language, if those terms are still in use?

> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Rob Geraghty
> Sent: Saturday, November 24, 2001 9:23 PM
> To: [EMAIL PROTECTED]
> Subject: Re: filmscanners: To Ed H; was: Vuescan for Minolta Scan Multi
> Pro
>
>
> > Not trying to steal trade secrets here, and wouldn't know what
> to do with
> > them anyway, but could you briefly explain how you learn to "talk" to a
> new
> > scanner in its "language"?  Do you run through its software and
> have some
> > way of reading or logging the info that goes back and forth between the
> > computer and the scanner?
>
> Yes, you trace the SCSI commands.  It's just a matter of recording the
> commands and responses sent over the SCSI bus.  Actually
> understanding them
> is the hard part!
>
> Rob
>
>
>

Re: filmscanners: To Ed H; was: Vuescan for Minolta Scan Multi Pro

2001-11-24 Thread EdHamrick 

In a message dated 11/24/2001 5:25:05 PM EST, [EMAIL PROTECTED] writes:

> could you briefly explain how you learn to "talk" to a new
>  scanner in its "language"?  Do you run through its software and have some
>  way of reading or logging the info that goes back and forth between the
>  computer and the scanner?

I use a program called "Bus Hound" to log the USB, SCSI and
Firewire commands that are used to talk to scanners.  I also
often have documentation on a scanner's basic command set.

The rest is just hard work decoding the commands that the
vendor's software sends to the scanner.  For instance, on
the Nikon scanners, I changed the "analog gain" command,
logged the commands from a scan, changed it again, logged
the commands from another scan and then looked to see
what fields in the commands changed.

Regards,
Ed Hamrick

Re: filmscanners: To Ed H; was: Vuescan for Minolta Scan Multi Pro

2001-11-25 Thread Rob Geraghty 

> So there is a program that listens to the bus and logs everything that
goes
> through it?

Vuescan has a mode which dumps SCSI commands.   don't know what other tools
Ed may use.

> Do they make any basic sense or are they like assembler or
> machine language, if those terms are still in use?

I've no idea.  I'd imagine they're byte sequences not textual commands.

Rob