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Even my tools are retro ….

A year or so ago I bought a Arium ML4100 logic analyzer off of ebay. ML4100

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 ….

One Response to “Even my tools are retro ….”

  1. rich Says:

    Very cool! If I had one of these, I would analyze the IOU
    and MMU chips, and watch how the graphics softswitches
    work (IE, the video scanner loads text screen from main
    RAM always).. it would be more fun to watch and document
    than looking at the schematics.

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