[Techtoolslist] 9010 Z-80 Pod Help needed

[David Shoemaker]

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 at flippers.com
[mailto:techtoolslist-bounces at flippers.com] On Behalf Of Justin Johnson
Sent: Saturday, March 09, 2013 7:09 PM
To: Techtoolslist at 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
_______________________________________________
Techtoolslist mailing list
Techtoolslist at flippers.com
http://seven.pairlist.net/mailman/listinfo/techtoolslist
FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment
Archive site: http://seven.pairlist.net/pipermail/techtoolslist/