HP analyzer probes

From: Philip Pemberton <philpem_at_dsl.pipex.com>
Date: Tue Jun 29 18:48:46 2004

In message <m1BfQmq-000JD0C_at_p850ug1>
          ard_at_p850ug1.demon.co.uk (Tony Duell) wrote:

> My guess it that it will work, but you probably won't be able to run at
> the specified maximum speed.
That's what I thought.

> My expeirience is that for classic computer work, any logic analyser,
> even a 10MHz one, is a lot better than nothing, provided you know what it
> can and cna't do.
Well, in this case, I'm still trying to get the hang of the front panel
controls on the 1651B. The badly-OCRed copy of the Getting Started Guide I've
got is just about usable, but a lot of the OCR errors are subtle - changing
commands and suchlike in non-obvious ways.
I'll probably buy a manual later, but the manual comes after the pods and
cable kit on my list of priorities.
Speaking of manuals, I've got the service manual for the 1652B - no
schematics, just a boardswapping guide. Yecch.

> In other words, I'd be inclined to make up kludge-pods for this analyser
> and at least try it out.
I've got it hooked up to a PICmicro development board - it's rigged up to the
1-wire bus output. At least I know Pod 1 bit 0 works - now to test the other
31...

> I don't know what machines you normally work on,
8-bit micros mainly. 6502, 8080, Z80, that sort of thing. I was going to get
one of the 80-channel HP analysers, but I decided I didn't need to probe that
many lines at once - I don't do much work on 16- and 32-bit CPUs.

> but I suspect it would be easily enough for 8 bit micros, HP calculators
> (including desktops), and so on
If I need an 80 channel analyser, I'll probably build my own - it can't be
that hard to shove a bunch of FIFOs and an oscillator on an ISA-bus card,
then write some software to drive it.

Later.
-- 
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem_at_dsl.pipex.com              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.dsl.pipex.com/  | 48xCD, ARCINv6c IDE, SCSI
... 640K ought to be enough for anybody. - Bill Gates
Received on Tue Jun 29 2004 - 18:48:46 BST

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