Comwatch 1.0 for RS232 <-> HP48


Does anybody know where I can download Comwatch 1.0 freeware ? Or is there another way of "viewing" the serial communication between the PC and the HP48.

I would like to see what is happening.

Next question: is the 48 an 8-bit or 16 bit sender ?

Thanks in advance,



Google for it.



Sender at 128 bits

Comwatch does exist in several webs.

Try yahoo


Also see:



Yeah, I tried to get comwatch from the internet, but on one way or the other it just will not download on my PC...

Possibly Related Threads…
Thread Author Replies Views Last Post
  Hand Held Products RS232 to HP-IL aj04062 11 3,485 08-31-2013, 07:12 PM
Last Post: Paul Berger (Canada)
  HP Calculator Communications - USB -> RS232/Serial on Win7/64? Thomas Chrapkiewicz 10 3,010 10-12-2011, 03:13 PM
Last Post: Gerry Schultz
  HP-30b successfully re-flashed to a WP-34s in Vista with SAM-BA 2.10 & USB-RS232 converter Bart (UK) 4 1,626 08-22-2011, 05:47 AM
Last Post: Hubert Weikert
  Need help with HP82164A HP-IL/RS232 Interface Ilyas B. 11 2,762 11-13-2009, 02:28 AM
Last Post: Ilyas.B.
  FSl164A hp-il/RS232 Interface Power Supply Andy Delano 5 1,741 10-19-2009, 06:02 AM
Last Post: Marcus von Cube, Germany
  Tape Drive copy to PC with 71B IL/RS232. Raymund Heuvel 1 950 01-13-2009, 09:23 PM
Last Post: Egan Ford
  Electri-Calc LT bill platt 6 2,057 12-04-2008, 11:26 PM
Last Post: bill platt
  71B <> PC via RS232. Egan Ford 1 873 09-02-2007, 01:27 PM
Last Post: Etienne Victoria
  Fwd: RS232 Homebrew for interface from RS232 to Ham Radio Marcus von Cube, Germany 0 707 11-10-2006, 05:26 AM
Last Post: Marcus von Cube, Germany
  50g "RS232" port James M. Prange (Michigan) 6 2,766 08-04-2006, 04:22 PM
Last Post: Eric Smith

Forum Jump: