fax on a mac?

fax on a mac?

Post by Chuq Von Rospa » Sat, 27 Jan 1990 06:21:29

With all of the discussions of Weather Fax, does anyone know of a way to use
a macintosh to view (or print) fax broadcasts to avoid buying all the
hardware?

--


The only people who will tell you writing isn't hard work aren't writers.

 
 
 

fax on a mac?

Post by Richard Cri » Sat, 27 Jan 1990 15:32:37



Quote:>With all of the discussions of Weather Fax, does anyone know of a way to use
>a macintosh to view (or print) fax broadcasts to avoid buying all the
>hardware?

The only ports into the mac are the serial port and the SCSI port, both of which
require

--
Just the facts Ma'am

 
 
 

fax on a mac?

Post by Richard Cri » Sat, 27 Jan 1990 15:40:25


Quote:>With all of the discussions of Weather Fax, does anyone know of a way to use
>a macintosh to view (or print) fax broadcasts to avoid buying all the
>hardware?

The only I/O ports on a Mac are the 2 serial ports (printer and modem)
and the SCSI port (neglecting the ADB keyboard/mouse port). These ports
only accept digital data. Perhaps if you used a sound digitizer and wrote
an application to handle the protocols it could be done, but you still
have the need for the analog to digital conversion.

At least it seems that way to me.

(sorry for the last posting, seems like my "s" and "e" fingers got
confused)

--
Just the facts Ma'am

 
 
 

fax on a mac?

Post by Mark Zeni » Mon, 29 Jan 1990 07:21:54



> >With all of the discussions of Weather Fax, does anyone know of a way to use
> >a macintosh to view (or print) fax broadcasts to avoid buying all the
> >hardware?

> ... Perhaps if you used a sound digitizer and wrote
> an application to handle the protocols it could be done, but you still
> have the need for the analog to digital conversion.

With an FM/FSK fax, one bit of digitization (a zero crossing comparator)
works well.  The data is in the pulse widths.  If there is a free timer
chip or the like it should be almost free.

If I can do it with a .9 Mhz 6803 then a mac should have enough free cycles
to capture edge timings at 1500 to 2300 Hz.