Wanted - two 27C010-capable EPROM emulators

[Alexandre Souza]

    Can't you roll your own? It is SO easy to build one, if you don't mind 
the hassle!?

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----- Original Message ----- 
From: "Philip Pemberton" <classiccmp at philpem.me.uk>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Wednesday, August 31, 2016 7:07 PM
Subject: Wanted - two 27C010-capable EPROM emulators


> Hi there,
>
> Does anyone have a pair of spare EPROM emulators which are capable of
> emulating 27C010 EPROMs?
> Ideally two identical ones, but that's optional.
>
>
> I'm trying to reverse-engineer a Securicor Datatrak MkII navigation
> receiver and build a signal generator which can emulate a chain of
> Datatrak transmitters. I'm part of the way there, but I've hit something
> of an impasse:
>
>
>  * My emulator isn't good enough to run the firmware on a PC (it
> crashes when the RTOS starts to boot).
>
>  * My knowledge of the hardware is full of holes (especially the
> simple-but-custom ASIC). Porting a monitor ROM using EPROMs would take a
> fair while, even with the HP16700A to use as a "debugger". I'd like to
> try patching the firmware, but with bare EPROMs that'll take a while to
> get right.
>
>
> I could swear these things were as common as housebricks on ebay a year
> or so ago, but now they're not quite so common...
>
>
> Incidentally, if someone (preferable in the EEA) has a spare HP 16717A
> acquisition card (for the 16700A series logic analysers) for sale, I'd
> be very interested in getting another one -- my second 16717A seems to
> have died while in storage, and spying on the 68k has eaten up all the
> pod inputs on my one working card.
>
>
> Thanks,
> -- 
> Phil.
> classiccmp at philpem.me.uk
> http://www.philpem.me.uk/