I work on old systems with big parallel buses, so a while ago I bought a big HP 16500C chassis with something like 128 logic analyzer channels.
It can handle a full 68000 bus no problem, but it’s cumbersome and unwieldy. (The X11 interface mentioned in the article is nifty though, I remember having the same issue with fonts.)
I love my Saleae and even the cheap USB logic analyzers work fine with Sigrok. But everything is either 8 or 16 channels.
I realize it’s a niche-of-a-niche use case, but is anyone making USB logic analyzers with 64+ channels at a hobbyist price point (or DIY)?
I upgraded from two 16500A boat anchors [1] ($20 a piece) to a 1670G [2]. But you’re right: I much prefer my DSLogic UPro 16. Like many others, I’ve started designing my own 64 channel logic analyzer, but like just as many, I never completed it. There are almost no use cases. When I need to debug wide busse, it’s usually in an FPGA and then a signaltap is the way to go.
Not 64 channels, but for 32 channels I'm a fan of the DSLogic U3Pro32 [0]. DreamSourceLab did historically violate the GPL license of Sigrok, but have since made the source code for their fork available [1], unfortunately last i checked the U3Pro32 wasn't supported in upstream Sigrok.
It does have trigger in and trigger out - so you might be able to use multiple together - though I've not tried.
Trivia: I looked through old sales brochures and did the math and calculated that the price of that HP 16500C new, adjusted for inflation, would be over $80,000. I paid $200, and I’m sure there are plenty that people have just given away for free.
It can handle a full 68000 bus no problem, but it’s cumbersome and unwieldy. (The X11 interface mentioned in the article is nifty though, I remember having the same issue with fonts.)
I love my Saleae and even the cheap USB logic analyzers work fine with Sigrok. But everything is either 8 or 16 channels.
I realize it’s a niche-of-a-niche use case, but is anyone making USB logic analyzers with 64+ channels at a hobbyist price point (or DIY)?