Re: Catbox, Catbox Sigs

You are correct.. Pat give the man a cookie! Pin 24 was only reading about
1v

Kevin

On Tue, Feb 2, 2010 at 6:56 PM, John Robertson <pinball@telus.net> wrote:

> Kevin Moore wrote:
>
> Turned out to be quite a simple fix. Bad rom socket.. Replaced and it's up
> and running self test now.
>
> Thanks for your help guys.
>
> Kevin
>
> Ah, I bet pin 24 wasn't making contact - that would pull the data lines all
> low...
>
>
> John :-#)#
>
>
> On Tue, Feb 2, 2010 at 6:25 PM, John Robertson <pinball@telus.net> wrote:
>
>> Kevin Moore wrote:
>>
>> Thanks for providing the sig, I was about to run calcsignature to get it.
>>
>> Anyways, Rom test came back as 0000, and since I know the rom is good that
>> can't be right :(
>>
>> How well do the flukes do the bus test? Since I've not ran into a
>> situation where the bus test has failed before.
>>
>> Ram test are showing faults but that may be due to some other problem.
>>
>> Haven't had a chance to fully get into this guy yet, but wanted to let you
>> guys know what little progress I've made :)
>>
>> Kevin
>>
>>
>> The BUS test (Fluke 9010A) is pretty good. It shows when address or data
>> lines are stuck high, low or shorted together or to ground or Vcc. It also
>> monitors Reset, NMI and any other CPU controlling inputs.
>>
>> Rom test of 0000 is interesting as I recall a blank 2K x 8 Eprom is
>> something like 56xx. 0000 sounds like data lines shorted to ground. Have you
>> tried reading any of the Eproms addresses? You should see some data in most
>> of the addresses occupied by the Eprom, certainly the last few addresses
>> will be occupied as they are the Reset and NMI vectors for the 6502 CPU.
>>
>>
>> John :-#)#
>>
>>
>>
>> On Tue, Feb 2, 2010 at 2:24 PM, John Robertson <pinball@telus.net> wrote:
>>
>>> Kevin Moore wrote:
>>>
>>> Haven't run the Fluke on it, but everything else. I'm assuming it's
>>> probably an addressing problem.
>>>
>>> Thanks,
>>>
>>> Kevin
>>>
>>> Considering the simplicity of the CatBox running the 9010A with the
>>> 6502 pod should show the problem up in seconds.
>>>
>>> The CatBox Eprom Fluke signature should be "B2DB" for the Checksum
>>> version of the software - all versions (except my prototype Cat Box) as far
>>> as I know are Checksum versions.
>>>
>>>
>>> John :-#)#
>>>
>>>
>>> On Tue, Feb 2, 2010 at 11:52 AM, John Robertson <pinball@telus.net>wrote:
>>>
>>>> Kevin Moore wrote:
>>>>
>>>> Thanks, I have all that. I was just wondering if they had done a sig
>>>> analysis profile. Before I start hitting it with the logic probe :)
>>>>
>>>>
>>>> Ah, no, not to my knowledge. I usually fire up the Fluke 9010 about
>>>> this time with non-working CPU based equipment... If you have a second Cat
>>>> Box you can use that to troubleshoot the sick one...
>>>>
>>>> I would start (after verifying proper voltages) with substituting the
>>>> RAM, then the CPU and finally the Eprom. This is the order I find failures
>>>> in most CPU based equipment.
>>>>
>>>> If there are PROMs, then they are about as suspicious as RAM, however no
>>>> PROMs in the Cat Box. ROMs are almost as reliable as Eproms in my
>>>> experience.
>>>>
>>>> John :-#)#
>>>>
>>>>
>>>> On Tue, Feb 2, 2010 at 11:06 AM, John Robertson <pinball@telus.net>wrote:
>>>>
>>>>> Kevin Moore wrote:
>>>>>
>>>>>> Is there a Catbox Sig manual for the Catbox, or for that matter one
>>>>>> using an HP5004a to do sigs on the catbox?
>>>>>>
>>>>>> I've got another cat box that the logic board isn't running.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Kevin
>>>>>>
>>>>>> Hi Kevin,
>>>>>
>>>>> I have a scan of the Atari CAT BOX book, includes schematic - its up on
>>>>> Tech Tools List FTP site under CAT BOX...
>>>>>
>>>>> FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment
>>>>>
>>>>> Mail List Archive site:
>>>>> http://seven.pairlist.net/pipermail/techtoolslist/
>>>>>
>>>>> Hope that helps! ROM images, POD sheets, etc. also found there...
>>>>>
>>>>> John :-#)#
>>>>>
>>>>> --
>>>>> 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"
>>>>>
>>>>>
>>>>> ---------------------------------------------------------------------------
>>>>> ** Unsubscribe, subscribe, or view the archives at
>>>>> http://www.vectorlist.org
>>>>> ** Please direct other questions, comments, or problems to
>>>>> chris@westnet.com
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> 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"
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> 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"
>>>
>>>
>>>
>>
>>
>> --
>> 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"
>>
>>
>>
>
>
> --
> 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"
>
>

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Tue Feb 2 20:04:00 2010