Seems to me that someone makes a program that outputs to the screen in different colors for each end, each character, each control line change, etc. etc. Know I've been offered that at a sizable price, could be shareware for that on simtel.net possibly; I should go look for one. http://www.simtel.net/simtel.net/msdos/commprog-pre.html is likely. If you're good with Serial programming, do what I usually do - build into your program, code to write a text log file out with time stamping and source etc., I find that log files are more storable than a graphical display, they can help provide evidence of bugs in other peoples' hardware/firmware even if the bug's spoor is rather large and diffuse, too. (Don't try to hire me to work with Process Basic firmware, unless I get to FIX the durn stuff, seen more problems in that stuff than I'd like to ever meet again ) Should re-do that code some time here, only as a Dos app, keep needing it. "Never time to do it right, just to do it again", huh?! Mark tenaglia@BIGFOOT.COM wrote: > Hi Adam > > I full agree with you; actually I use a single inexpensive 486 - 66Mhz and i > see the serial of TX and RX traking using the COM1: and the COM2: but the > problem that I have is to see the temporal correlation between the two > signaling. > > For example if I have a fast polling and immediate replay of the device, I > cannot see the correlation between the polling ask caracter and the > correlate answer caracter. > > The problem is related to the sniffing program that I use, for example if > the program was able to show with separate color the TX and the RX on the > same line I can easily understand the calling caracter and the answer > caracter. > > Ciao > > Leoo > > > When I needed to spy on serial communications, I used a seperate computer > with > > two serial ports. It ran a program that shuttled the info from one > interface to > > the other, and vice versa. You could easily add a $10 two serial port > card to > > you computer and do it with one computer, which gives you some advantages > over > > programs which insert themselves into the serial stream (like COMMCHK) > > > > -Adam > > > > tenaglia@BIGFOOT.COM wrote: > > > > > > Hi PICer friends, > > > > > > actually I use the COMMCHK program to check the data transfer between my > PIC > > > software and the external device with my full satisfaction, until today. > > > > > > Today I have used the COMMCHK to see the data interchange between two > > > device, and now the COMMCHK show its limits. I can see on the two > windows > > > the transmits and the receive without temporal advice. In other word I > > > cannot see the call, the answer and other related command, sensing and > > > information exchange and its correlation in timing. > > > > > > Someone of as use similar serial port scope program able to show the > time > > > correlation between transmit and receive?? > > > > > > Thanks > > > > > > Ciao > > > > > > Leo > > -- I re-ship for small US & overseas businesses, world-wide. (For private individuals at cost; ask.)