Re: Catbox, Catbox Sigs

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

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"
>>>>
>>>>
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>>>>
>>>
>>>
>>>
>>> --
>>> 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"
>
>

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Received on Tue Feb 2 19:36:54 2010