Products > Test Equipment

HP Logic Analyzer Inverse Assemblers

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Hamster:
most if all the information is in this thread, however, some processors require pre-processors to work ( z80, etc ) , you can't just hook up the LA and then use the IA(s).

all the documentation for how to compile the IA for new version Systems have been posted.

i dont think i have ever seen anything that shows cpu to cpu layout.

go4retro:

--- Quote from: Hamster on July 15, 2024, 08:48:34 pm ---most if all the information is in this thread, however, some processors require pre-processors to work ( z80, etc ) , you can't just hook up the LA and then use the IA(s).

all the documentation for how to compile the IA for new version Systems have been posted.

i dont think i have ever seen anything that shows cpu to cpu layout.

--- End quote ---

My goal was to design some adapters that didn't fall into the trap of one of the links earlier in the thread:

https://pcbjunkie.net/index.php/logic-analyzer-adapters/

Obviously, his adapter for the Z80 lacks all the buffering, but even his 6502 adapter (which would not have needed any pre-processing, according to the current thread) uses the wrong pin mappings.

And, by looking at a few mappings in a single place, I might be able to deduce how best to create a mapping for a CPU not already supported (the TI ones in the cc-40/74/95 come to mind)

Jim

deanclaxton:

--- Quote from: deanclaxton on February 09, 2023, 12:44:33 am ---Gerbers attached for the 65C02 adapter, but I havent built/tested this yet. I'll update this post once I know its working ok - I'll slip in a few of these boards with my next order. This can be used with Phils inverse assembler (I'll have to get that running on the 16902).

The order of the STAT signals is correct for his inverse assembler. I designed and built a similar adapter for the 40 pin probes with all the termination parts on the adapter. This will be much faster to assemble!

--- End quote ---

I don't think I ever updated this thread after building my 65C02 adapter, but it works great. I'll try dig out a photo.

EDIT: cant find a good photo of it in use - the images are normally focused on what I'm testing and not the adapter, but here is a photo I took some time after building it.

Hamster:
I like it! Thoughts on releasing the plans?

gslick:
Good use of the Samtec connector. Makes it easier to put the newer style 90-pin logic analyzer modules to work that can be a pain to use for most things otherwise.

You might be able to sell a few of those if you built some up.

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