Remapping the HP150 keyboard
hp-fix at xs4all.nl
Sat Apr 18 17:30:14 CDT 2009
I got the user/service manual, it's handy when fixing the thing.
I'll try it out when I'm going to play with the multi-programmer.
> -----Oorspronkelijk bericht-----
> Van: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] Namens Tony Duell
> Verzonden: zaterdag 18 april 2009 22:29
> Aan: cctalk at classiccmp.org
> Onderwerp: Re: Remapping the HP150 keyboard
> > And now something completely different......(free after
> monty python)
> > Did you ever use the HP 59401A HP-IB analyzer ?
> Yes, I have one, and have a fair idea how it works.
> The lower PCB is the PSU (the +5V switching regulator is
> somewhat odd), the data capture RAM and data path circuits
> The upper PCB contains 2 seaprate sections. The display
> driver in the front left corner and the main control state
> machine, based round those 4 ROM chips in the middle.
> I can provide a _lot_ more info on it if you need it.
> > It's fun to look at the HP-IB(us) the display flickers
> nice, but is =
> > there realy meaning full use for these analyzers ?
> It's not very useful for mass stroage devices (it can't hold
> enough data, and if you single-step it, the host connected to
> said mass storage device generally times out and gives an
> error). But I've found it very useful for examping data
> to/from HPIB instruments, and for testing HPIB interfaces,
> printers, etc.
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