A year or so ago I bought a Arium ML4100 logic analyzer off of ebay.
This model was sold from 83 on into the late eighties … one of the reasons i bought it was that it a) cheap ($100) b) I could pick it up locally (its heavy) and c) it came with a 32 channel logic pod.
At the time I did not get around to learning how to use it but along the way I picked up a 6502 processor pod for the little beasty. That POD came with a dip clip that you attach right to the 6502 chip to monitor all the signals (well almost all).
For the last little while I have been contemplating buying some more tools – one I was considering was the Intronix 34 Channel logic analyzer $389. I stil plan to get one but before commiting to that, I decided to give the ML4100 a shake down to see what I could do with it
For a test subject I used one of the Olimex PIC demo boards I bought from Sparkfun and a PIC 18F4550 chip I bought from Digikey in it. I took the sample code to toggle one port, which lit the led and utilized that. I put one of the test leads on and tried to get the LA to trace the signal … it took me a while to zone in the right settings but I managed to dial it in. To confirm I put a second test lead on another PIC port and toggled that right after the first one …. It was pretty cool ….
So far now I will play with what I have … when I want some nice graphics and protocol support (i2c, SPI and RS-232 decode) I’ll pick up the LA1034 ….