[Techtoolslist] Alpha Electronics Dynamic Integrated Digital IC Tester on eBay

Sun Feb 16 21:32:40 EST 2020

Wasnt me John, sorry to hear you lost the auction.

On Sun, Feb 16, 2020, 9:05 PM John Robertson via Techtoolslist <
techtoolslist at flippers.com> wrote:

> Well, someone else wanted it just a bit more than I did...oh well. If
> they are on TTL and get around to safely archiving the code I'd
> appreciate a copy as I have two units to get running...
>
> John ;-#)#
>
> On 2020/02/10 9:40 a.m., John Robertson via Techtoolslist wrote:
> > Many moons ago I accidentally erased the code from one of these Dyna
> > IC testers, but another unit has finally shown up on eBay and I have
> > an active bid on it.
> >
> > My plan is to archive the good code after first verifying that I can
> > read and write to the old unit (the blown one) with some random code.
> > The current eBay one appears to still be alive! This time I use the
> > Fluke 9010 to extract the code...
> >
> > Then I will release it to the wild on the TTL FTP site, and fix both
> > my Alphas here.
> >
> > Of course the Alpha device is perhaps worthless as the Chinese chip
> > testers do everything the Alpha does and more for a just a few bucks,
> > but it is a piece of history that needs proper archiving, and I
> > screwed it up last time!
> >
> > Ebay item 264629134572
> >
> > John :-#)#
> >
> > On 2013/08/16 8:39 a.m., John Robertson wrote:
> >> On 08/16/2013 7:25 AM, Default wrote:
> >>> Morning John,
> >>>
> >>> Just wondering if you had any luck with the program on that little
> >>> bugger.
> >>>
> >>> Thanks,
> >>>
> >>> Tom
> >>
> >> Hi Tom,
> >>
> >> No, I haven't had any time to look at it further. As I said I was
> >> able to get some valid code, but apparently not enough to get this to
> >> boot.
> >>
> >> Code is on the ftp site under Alpha if anyone wants to look at it...
> >>
> >> John :-#(#
> >>> On Sat, Jul 27, 2013 at 11:55 AM, Fabrizio Vasile
> >>> <fabrizio.vasile at gmail.com
> >>>> wrote:
> >>>> Hi John,
> >>>> maybe  this thread can help you:
> >>>>
> >>>> http://www.eevblog.com/forum/**testgear/dallas-nonvolatile-**
> >>>> ram-chips-battery-surgery/**msg263224/#msg263224<
> http://www.eevblog.com/forum/testgear/dallas-nonvolatile-ram-chips-battery-surgery/msg263224/#msg263224>
>
> >>>>
> >>>>
> >>>>
> >>>> ----- Original Message ----- From: "John Robertson" <jrr at flippers.com
> >
> >>>> To: <techtoolslist at flippers.com>
> >>>> Sent: Friday, July 26, 2013 11:08 PM
> >>>>
> >>>> Subject: Re: [Techtoolslist] Alpha Electronics Dynamic Integrated
> >>>> Digital
> >>>> IC Tester on eBay
> >>>>
> >>>>
> >>>>   Update to TTL:
> >>>>> Tom tried reading the data and was unsuccessful and since then the
> >>>>> device
> >>>>> won't boot - so he sent it to me, I then tried reading the DS-1230
> >>>>> with my
> >>>>> Xeltek and got what appears to be a fair bit of reasonable data.
> >>>>> My earlier
> >>>>> read of my DS-1230 got a some of what also looks like it may be
> >>>>> valid data
> >>>>> so I'm hoping that these two files can be merged to produce a
> >>>>> working image.
> >>>>>
> >>>>> Not that I have any time though to do this.
> >>>>>
> >>>>> Anyone here familiar enough with Z80 code interested in looking at
> >>>>> the
> >>>>> two files and see if anything can be done?
> >>>>>
> >>>>> I'm putting the two files on the FTP site so folks can take a
> >>>>> look-see...
> >>>>>
> >>>>> John :-#)#
> >>>>>
> >>>>>
> >>>>> On 07/16/2013 4:26 PM, Default wrote:
> >>>>>
> >>>>>> Hi Group,
> >>>>>> I couldn't help myself.  I figured at $19.95, this would be a cool
> >>>>>> little device to have even if it doesn't work.
> >>>>>> Get it in the mail, read the documentation that came with it and
> >>>>>> couldn't find a battery.  Hmm, that's odd.  But there is a power
> >>>>>> jack.  And everything looks brand new, not even dust!
> >>>>>> Pop it open, no battery but a funny thing what looks like to be a
> >>>>>> RAM
> >>>>>> stacked on something else, a few custon chips, etc.  No standard
> >>>>>> EPROMs that I could dump, bummer.
> >>>>>> kids are in bed, back to the schematic and it'll take between 9 and
> >>>>>> 12VAC.  Looked through my wall wart collection and found a 12VAC
> >>>>>> one.
> >>>>>> Wired it up, hit the switch and...
> >>>>>> COMMAND? scrolling across the screen!  Figure i'll let it run for a
> >>>>>> half hour if there is a battery somewhere and it needs to be
> >>>>>> charged.
> >>>>>> My question to the group is, how do I dump the program on this
> >>>>>> thing?
> >>>>>> Thanks
> >>>>>>
> >>>>>>
> >>>>>> On Tue, Jul 9, 2013 at 3:46 PM, John Robertson <jrr at flippers.com
> >>>>>> <mailto:jrr at flippers.com>> wrote:
> >>>>>>
> >>>>>>      I chatted with the seller and he confirms that it does NOT
> >>>>>> power
> >>>>>>      up. So chances are the battery backed up system ROM has failed.
> >>>>>>
> >>>>>>      Item 390623172259
> >>>>>>
> >>>>>>      He reduced the price on his own from the original asking
> >>>>>> $59.95 to
> >>>>>>      $19.95.
> >>>>>>
> >>>>>>      Pity. I was hoping to find a good one to extract the program
> >>>>>> from
> >>>>>>      to save mine...
> >>>>>>
> >>>>>>      If someone here buys it and CAN extract the ROM data I'd
> >>>>>> sure like
> >>>>>>      a copy!
> >>>>>>
> >>>>>>      John :-#(#
> >>>>>>
> >>>>>>      __________________
> >>
> >
>
> --
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