Re: 9010 Z-80 Pod Help needed

From: Rodger Boots <rlboots2_at_gmail.com>
Date: Sun Mar 10 2013 - 01:50:55 EST

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@**flippers.com<techtoolslist-bounces@flippers.com>
>>> [mailto: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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>
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Received on Sun Mar 10 01:51:25 2013

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