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

[Default]

Morning John,

Just wondering if you had any luck with the program on that little bugger.

Thanks,

Tom

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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>>> >

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>>>     FTP site is: ftp://ttl.arcadetech.org/TTL/**Test_Equipment<ftp://ttl.arcadetech.org/TTL/Test_Equipment>

>>>     Archive site: http://seven.pairlist.net/**pipermail/techtoolslist/<http://seven.pairlist.net/pipermail/techtoolslist/>

>>>

>>>

>>>

>>

>> --

>> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9

>> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)

>>                  www.flippers.com

>> "Old pinballers never die, they just flip out"

>>

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>>

>

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