6 Feb
2006
6 Feb
'06
10:14 a.m.
Hi
Although, it would be nice to find someone with
an ICE for the V25, many in our group would be able to
help you with as little as an oscilloscope and a simple
disassembled listing from the EPROM. Using a digital
oscilloscope or a logic analyzer could speed things along.
There are a few members of our group in Germany that
would be able to help you out. The 186 is a relatively
well known processor.
Dwight
From: "werner busch" <wernerbusch at
t-online.de>
Dear Sirs,
we need Your help for analyzing a the software of a control unit.
We are a German Company and the unit is not longer supported by developer.
( company is down).
Target is to analyze some parts of the software and make some little changes.
( change 2 parameters dirct in software).
The cpu on control unit is a NEC V25 / V25+ (80186 derivate, 84-pin PLCC ),
software is on eeprom 512 KByte.
We want to trace the running program, analyze some parts, see registers etc.
Is this possible with one of your systems ?
Please tell us what we need to reach our target and what are the price for the
system we need.
Kind Regards
Busch-Automation
Werner Busch
7 Feb
7 Feb
8:13 a.m.
Depending on what the controller was controlling, it may be easier to
determine the set of requirements/control stratagy and recode from the
start for the target platform.
Unless the controller is highly specialised, whoever is responsible
for running the final system is taking a lot of risk by using
equipment that can not be replaced/repaired qucikly & easily. Suggest
to the person responsible for the process being controlled that it
could be wiser to replace the controller for a more modern unit where
off the shelf spares are available.
If you don't mind me asking, what is the function of the control unit,
and who is the manufacturer?
On 2/6/06, Dwight Elvey <dwight.elvey at amd.com> wrote:
Hi
Although, it would be nice to find someone with
an ICE for the V25, many in our group would be able to
help you with as little as an oscilloscope and a simple
disassembled listing from the EPROM. Using a digital
oscilloscope or a logic analyzer could speed things along.
There are a few members of our group in Germany that
would be able to help you out. The 186 is a relatively
well known processor.
Dwight
Simon
--
------------------------------------------------------------------------
"Well, an engineer is not concerned with the truth; that is left to
philosophers and theologians: the prime concern of an engineer is
the utility of the final product."
Lectures on the Electrical Properties of Materials, L.Solymar, D.Walsh
From: "werner busch" <wernerbusch at
t-online.de>
Dear Sirs,
we need Your help for analyzing a the software of a control unit.
We are a German Company and the unit is not longer supported by developer.
( company is down).
Target is to analyze some parts of the software and make some little changes.
( change 2 parameters dirct in software).
The cpu on control unit is a NEC V25 / V25+ (80186 derivate, 84-pin PLCC ),
software is on eeprom 512 KByte.
We want to trace the running program, analyze some parts, see registers etc.
Is this possible with one of your systems ?
Please tell us what we need to reach our target and what are the price for the
system we need.
>
>
>Kind Regards
>
>Busch-Automation
>Werner Busch 
11:19 a.m.
On 2/7/2006 at 4:13 PM Simon Fryer wrote:
If you don't mind me asking, what is the function
of the control unit,
and who is the manufacturer?
We run into this quite frenquently. As you probably realize, the big
problem is analyzing what the peripheral hardware does and how one programs
it--and all of the little program tweaks that were necessary to get it to
work as advertised. 512K of program code is not a drop in the bucket. And
it goes without stressing that checkout of any replacement involves
hands-on access to hardware. They might be better off having the original
design duplicated to maintain a stock of replacements--it might be cheaper
that way.
It's what you don't know that will kill you. That V25 may be hosting older
8080 code being run in emulation mode. In that case, replacement with,
say, an 80188 may not be straightforward.
FWIW,
Chuck
6893
days inactive
6894
days old
2 comments
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