Re: 9010 Z-80 Pod Help needed

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
>> [mailto: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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Received on Sun Mar 10 01:44:34 2013