[Techtoolslist] leland off road pal dump needed u85

[Fabrizio Vasile]

We are speaking of PAL and not bipolar PROM.

Anyway, you CANNOT dump a  registered PAL with the ABI 4000 neither with 
other PAL dumper.Among the other things the ABI dumping program is 
heavely  based on the Charles MacDonald analysing program.Charles is the 
desighner of the 27C020 PAL adapter and the standalone PAL dumper

I think I have some experience with PAL since I'm (Caius) the maintainer 
(along with my mate Porchy) of the PAL archive on 
http://www.jammarcade.net/pal-dumps/


Il 07/09/2016 16:36, Steve Larkins ha scritto:
> I believe Tony is using the ABI to dump the contents of the PROM as pointed
> out here:
>
> http://www.macros-arcade.com/paldump.htm
>
> On 7 September 2016 at 14:30, Fabrizio Vasile <fabrizio.vasile at gmail.com>
> wrote:
>
>> Neither 27C020 EPROM adapter and ABI 4000 can read secured registered
>> PLDs.As I said, we can only try to read as PAL16R8 in a regular programmer
>> hoping it's unsecured.
>>
>>
>>
>> Il 07/09/2016 13:44, tony htbs ha scritto:
>>
>>> I tried to read it as a eprom did not work
>>> And I have a abi 4000 and I can read it
>>> I have not been able to compile the file I just get errors trying to
>>> convert it
>>> Need another program  for conversion
>>>
>>> Sent from my iPhone
>>> Hitech tony
>>>
>>>
>>> On Sep 7, 2016, at 2:45 AM, Fabrizio Vasile <fabrizio.vasile at gmail.com>
>>>> wrote:
>>>>
>>>> Unfortunately there is no way to reverse registered secured PLDs thru an
>>>> automated process.All you can do is study the behaviour of the device and
>>>> try to reproduce it manually.Anyway, about this Leland Offroad Track Pak
>>>> PAL16R8, try to read it in a standard EPROM programmer which supports this
>>>> device, it could be unsecured.
>>>>
>>>>
>>>> Il 07/09/2016 03:17, John Robertson ha scritto:
>>>>
>>>>> On 03/16/2015 1:49 PM, Fabrizio Vasile wrote:
>>>>>>
>>>>>> Il 16/03/2015 21:33, Clay Cowgill ha scritto:
>>>>>>
>>>>>>> I was aware of this possibility of dumping PLD like a normal EPROM but
>>>>>>>> there could be issue with some programmers.
>>>>>>>>
>>>>>>> Shouldn't be.  It's a five volt part and since you're not writing
>>>>>>> data to
>>>>>>> the part the lack of OE shouldn't be an issue.  (I suppose if you were
>>>>>>> particularly concerned you could just buffer the output pins with a
>>>>>>> '244
>>>>>>> connected to the 2716's CE's and OE.)
>>>>>>>
>>>>>> /*I mean the programmer you are going to use for dumping a PLD as
>>>>>> EPROM must *//**//*actually drive the pins both high and low for this to
>>>>>> work.Some programmers only drive LOW the pins and use pull-up resistors to
>>>>>> force them HIGH.
>>>>>>
>>>>>> Anyway, like Charles MacDonald explain here:
>>>>>>
>>>>>> http://dreamjam.co.uk/emuviews/old2009.php
>>>>>>
>>>>>> you can also read a PAL as a 27C020 EPROM using this simple adapter:
>>>>>>
>>>>>> http://dreamjam.co.uk/emuviews/temp/adapter2.png
>>>>>>
>>>>>> *//*/*You will get a 256KB dump that can be analized with his
>>>>>> analysing software in order to recompile equations in a GAL16V8
>>>>>> replacement*/
>>>>>> */
>>>>>>
>>>>>>> -Clay
>>>>>>>
>>>>>> Back to reading PALs.
>>>>> On a customers Leland Offroad Track Pak I have a PAL16R8 (08-2) to
>>>>> read, and it was suggested here that the 16R8 could be read with the
>>>>> correct technology:
>>>>>
>>>>> http://marc.info/?l=classiccmp&m=141212179614845&w=2
>>>>>
>>>>> So, has anyone here found a way to read the registered PALs? Or do I
>>>>> just need to look a little harder on MAME to find the decrypted PAL images?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> John :-#)#
>>>>>
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