Re: 9010 Z-80 Pod Help needed

Mine has the twisted pair. Im guessing there is no way this could function as it would be pulling the unit under test z80 IORQ down to ground.

Justin

Sent from my Verizon Wireless 4G LTE DROID

Rodger Boots <rlboots2@gmail.com> wrote:

>Oh, crap. 8085 pod manual ALSO calls for a 585141 ribbon cable. This
>appears to be the flat cable. The pod manuals don't give an alternate
>number for the twisted pair style cable.
>
>
>On Sun, Mar 10, 2013 at 4:11 PM, Rodger Boots <rlboots2@gmail.com> wrote:
>
>> UUT ribbon cable is 585141 according to pod manual.
>>
>>
>> On Sun, Mar 10, 2013 at 4:05 PM, Justin Johnson <rugd2go@comcast.net>wrote:
>>
>>> I swapped the Z80 and the 6532. Here is the interesting part: When I
>>> swapped the Z80 no change but when I swapped the 6532 pin 28 of U4 was now
>>> high. I thought that was a good sign so I decided to run the self test
>>> again and it failed. I then checked Pin 28 of U4 again and it was low
>>> again. What I suspect is that when I purchased the new cables for the POD
>>> the guy shipped me a 8085 40 pin cable rather than the z-80 and pin 20 of
>>> the cable grounded. When I ohm out the 40 pin cable pin 20 is connected to
>>> the ground lug that goes to the screw on the metal standoff. The number on
>>> the 40 pin cable is 685495. Can someone verify the cable number is correct?
>>>
>>> Thanks
>>>
>>> Justin
>>>
>>>
>>>
>>>
>>> On Mar 9, 2013, at 10:50 PM, Rodger Boots wrote:
>>>
>>> Probably a better chance of the Z80 being bad (or pin 20 not connected).
>>>>
>>>> On Sun, Mar 10, 2013 at 12:44 AM, Justin Johnson <rugd2go@comcast.net
>>>> >wrote:
>>>>
>>>> I have a 6502 pod so I will try swapping the 6532 IC tomorrow and see
>>>>> what
>>>>> happens. If nothing else I can eliminate something.
>>>>>
>>>>> Thanks
>>>>>
>>>>> Justin
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Mar 9, 2013, at 10:33 PM, Rodger Boots wrote:
>>>>>
>>>>> Rereading the original complaint it appears bit 3 (not bit 5) was
>>>>> failing.
>>>>>
>>>>>> Bit 3 is IORQ (pin 20).
>>>>>>
>>>>>>
>>>>>> On Sat, Mar 9, 2013 at 11:12 PM, David Shoemaker <davids@oz.net>
>>>>>> wrote:
>>>>>>
>>>>>> Sounds like replacing the 6532 is in order (it's an IO chip). Those
>>>>>> are
>>>>>>
>>>>>>> used in all the pods I think so you could try a swap and see if that
>>>>>>> fixes
>>>>>>> the problem.
>>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: techtoolslist-bounces@**flippe**rs.com <http://flippers.com><
>>>>>>> techtoolslist-bounces@**flippers.com<techtoolslist-bounces@flippers.com>
>>>>>>> >
>>>>>>> [mailto:techtoolslist-bounces@****flippers.com<techtoolslist-**
>>>>>>> bounces@flippers.com <techtoolslist-bounces@flippers.com>>]
>>>>>>> On Behalf Of Justin Johnson
>>>>>>> Sent: Saturday, March 09, 2013 7:09 PM
>>>>>>> To: Techtoolslist@flippers.com
>>>>>>> Subject: [Techtoolslist] 9010 Z-80 Pod Help needed
>>>>>>>
>>>>>>> Hi Guys,
>>>>>>>
>>>>>>> I'm hoping I can find some help fixing my Z-80 Pod. Here is the scoop
>>>>>>> and
>>>>>>> I
>>>>>>> will try to make this short. I purchased a Z-80 pod with the cables
>>>>>>> cut
>>>>>>> off. Found a new set of cables and tried a self test. The self test
>>>>>>> gave
>>>>>>> me the failure code 00. I then used a 40 pin socket and removed pin
>>>>>>> 29
>>>>>>> as
>>>>>>> suggested in the manual and placed the socket on the pod pins and
>>>>>>> reinserted
>>>>>>> the 40 pin connector into the pod for a bus test. I then got a CTL
>>>>>>> ERR
>>>>>>> 00000000 00001000- LooP. As I understand it that shows an issue with
>>>>>>> driving bit 5. Am I correct that this is address and data line 5? I
>>>>>>> used
>>>>>>> my
>>>>>>> logic probe and probed the data lines of U4 or R6532AP. I found that
>>>>>>> pin
>>>>>>> 28
>>>>>>> of
>>>>>>> U4 which is the R6532AP has Data line 5 low while the other data
>>>>>>> lines
>>>>>>> are
>>>>>>> high. Where do I go from here? Any help or suggestions would be
>>>>>>> appreciated.
>>>>>>>
>>>>>>> Thanks
>>>>>>>
>>>>>>> Justin
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>>>>>>> <ftp://ttl.**arcadetech.org/TTL/Test_**Equipment<ftp://ttl.arcadetech.org/TTL/Test_Equipment>
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>>>>>>>
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>>>>>> <ftp://ttl.**arcadetech.org/TTL/Test_**Equipment<ftp://ttl.arcadetech.org/TTL/Test_Equipment>
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>>>
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Received on Sun Mar 10 17:56:02 2013