Joe,

I really want to experience using the eprom programmer first hand but
haven't been able to find a USB based on that's below $100 that says it
supports VPP of 25v.  I think to spend more than that on tools that may not
be used again isn't smart...although I have broken that guideline many
times!  I think using a USB to RS-232 or USB to parallel adapter makes for
a good rabbit hole too.  I successfully cancelled the programmer I already
ordered as it didn't have high enough programming voltage even though it
said it supported the TMS2564-JL chips.

So, Joe, I'd like to take you up on your generous offer to read the old
ones and program the new ROMs.   I was able to confirm this morning that
the ROMs I ordered are the correct versions.  They should be here to my
house by Thurs this week.  I'll reach back out to you once they've arrive.

I've also ordered a new battery for the B1 real time clock.  It is dead.
That should be here tomorrow. Will be interesting if the battery is part of
the boot up problem.

Thanks

Rick




> If you have the pocket depth then I would suggest a Galep-5 (made by
> Conitec) EPROM programmer.
>
> I have its baby brother (Galep-4) but that needs a parallel port.
>
> It's a USB device and will handle the older stuff like 2564s quite happily
> and also the new serial EEPROMs
>
> David
>
>
>
>
>
>
> ---------- Forwarded message ----------
> From: "J. L. Trantham" <[email protected]>
> To: "'Discussion of precise voltage measurement'" <
> [email protected]>
> Cc:
> Bcc:
> Date: Sun, 29 Mar 2020 09:29:33 -0500
> Subject: Re: [volt-nuts] Solartron 7081
> Rick,
>
> The older programmers, generally, require a Parallel Port.  Parallel Ports
> seem to have vanished though I have a Win7 machine with one.  Haven't tried
> to use any of the older software with it though.
>
> I have several older machines with WinXP and these almost all came with a
> Parallel Port.  And, you could add additional Parallel Ports with PCI
> cards.
> I have three programmers connected to one of my computers.
>
> My favorite computer for this is the Dell Latitude D610 which I think was
> the last Dell Laptop with a Parallel Port.  Also has USB and Serial.  These
> seem to be relatively cheap on theBay.  Depending on the 'total cost',
> might
> be worthwhile to get an older computer with WinXP and an older programmer
> rather than the usual several hundred dollars for a newer USB programmer.
>
> I just looked at my 7081's and (re)discovered that they both have their
> 'Calibration Seals' in place when calibrated by Ametek (formerly Solartron)
> several years ago.  I would like to avoid opening them if possible.  I'll
> chase down the EPROM files referenced earlier in the thread to be able to
> compare your chips with.  If your chips are bad (can't be read or
> programmed), I'll use those files to program your new chips.
>
> I went looking for my stash of EPROM's but, so far, I can't find it.  I
> don't remember if I have those chips or not.  I did find some TMS2516's so
> maybe I do have the chips if I can find the 'mother lode'.  Hopefully, you
> can get the chips.
>
> Joe
>
> -----Original Message-----
> From: volt-nuts [mailto:[email protected]] On Behalf Of
> David
> C. Partridge
> Sent: Sunday, March 29, 2020 3:45 AM
> To: 'Discussion of precise voltage measurement'
> Subject: Re: [volt-nuts] Solartron 7081
>
> If you have the pocket depth then I would suggest a Galep-5 (made by
> Conitec) EPROM programmer.
>
> I have its baby brother (Galep-4) but that needs a parallel port.
>
> It's a USB device and will handle the older stuff like 2564s quite happily
> and also the new serial EEPROMs
>
> David
>
>
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