M68KIT912DP256

Started by hc12 January 8, 2003
Hi All,

The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
Before I start working with it, I was wondering if any of you know of any
problems or gotchas with the kit not already documented in errata.

Thanks,
Rich



My board ran fine straight out of the box. I have had to be careful with
using the P&E BDM module. In my experience, the BDM prefers to be directly
connected to the PC's parallel port. If things get flakey, try a direct
connect. Caution, This was marginal enough that diagnosing the cause was
difficult because back-to-back tests would give differing results. 607-656-2597 -----Original Message-----
From: hc12 [mailto:]
Sent: Tuesday, January 07, 2003 9:48 PM
To: hc12
Subject: [68HC12] M68KIT912DP256 Hi All,

The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
Before I start working with it, I was wondering if any of you know of any
problems or gotchas with the kit not already documented in errata.

Thanks,
Rich
--------------------
">http://docs.yahoo.com/info/terms/



> My board ran fine straight out of the box. I have had to
be
> careful with
> using the P&E BDM module. In my experience, the BDM
prefers
> to be directly
> connected to the PC's parallel port. If things get
flakey,
> try a direct
> connect. Caution, This was marginal enough that
diagnosing
> the cause was
> difficult because back-to-back tests would give differing
results.

The P&E BDM module has quite a short cable. As a
consequence, it is convenient to extend it with a DB25
cable. The problem is that not all DB25 cables are equal.
Some (usually very old and thick cables) work fine and
others almost work, or work most of the time, but not
reliably (i.e., "flaky"). But, if you use a IEEE 1284 cable,
the P&E BDM module will always work.

Btw, don't even think of extending the ribbon cable. Doing
so will result in the same "flaky" behavior as a cheap DB25
cable.

Bfn,

Bob Furber

__________________________________________________________

Connect your micro to the internet the easy way
www.microcommander.com

Microcontroller with an obscenity of I/O & features
..in a small footprint www.steroidmicros.com
__________________________________________________________


Could you define direct connection to the parallel port please. Does this
mean I can wire the DB25 directly to the BDM and if yes how do I do that?
-----Original Message-----
From: Kellogg Dave [mailto:]
Sent: Wednesday, January 08, 2003 11:35 AM
To: '
Subject: RE: [68HC12] M68KIT912DP256 My board ran fine straight out of the box. I have had to be careful with
using the P&E BDM module. In my experience, the BDM prefers to be
directly
connected to the PC's parallel port. If things get flakey, try a direct
connect. Caution, This was marginal enough that diagnosing the cause was
difficult because back-to-back tests would give differing results. 607-656-2597 -----Original Message-----
From: hc12 [mailto:]
Sent: Tuesday, January 07, 2003 9:48 PM
To: hc12
Subject: [68HC12] M68KIT912DP256 Hi All,

The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
Before I start working with it, I was wondering if any of you know of any
problems or gotchas with the kit not already documented in errata.

Thanks,
Rich
--------------------
">http://docs.yahoo.com/info/terms/

--------------------


Bob -
I have even had problems using 6 foot cables marked IEEE 1284.

I have been very successfully in extending the 6-pin cable, by substituting
a cable made from CAT-5E wire. Each signal line has its twisted twin
grounded.
607-656-2597 -----Original Message-----
From: Bob Furber [mailto:]
Sent: Wednesday, January 08, 2003 11:57 AM
To:
Subject: RE: [68HC12] M68KIT912DP256 > My board ran fine straight out of the box. I have had to
be
> careful with
> using the P&E BDM module. In my experience, the BDM
prefers
> to be directly
> connected to the PC's parallel port. If things get
flakey,
> try a direct
> connect. Caution, This was marginal enough that
diagnosing
> the cause was
> difficult because back-to-back tests would give differing
results.

The P&E BDM module has quite a short cable. As a
consequence, it is convenient to extend it with a DB25
cable. The problem is that not all DB25 cables are equal.
Some (usually very old and thick cables) work fine and
others almost work, or work most of the time, but not
reliably (i.e., "flaky"). But, if you use a IEEE 1284 cable, the P&E BDM
module will always work.

Btw, don't even think of extending the ribbon cable. Doing
so will result in the same "flaky" behavior as a cheap DB25 cable.

Bfn,

Bob Furber

__________________________________________________________

Connect your micro to the internet the easy way
www.microcommander.com

Microcontroller with an obscenity of I/O & features
..in a small footprint www.steroidmicros.com
__________________________________________________________
--------------------
">http://docs.yahoo.com/info/terms/


I simply plugged the BDM module straight onto the back of my PC (DB25M <-->
DB25F). This way my only reliable configuration. BTW, I have a full tower
Gateway.

To make up for the lost cable length, I extended the 6-pin side using CAT-5E
cable and using the twisted twins as ground shields. 15 feet worked OK, but
I generally keep it down to about 5'. 607-656-2597 -----Original Message-----
From: Stephen Mac Neil [mailto:]
Sent: Wednesday, January 08, 2003 12:31 PM
To:
Subject: RE: [68HC12] M68KIT912DP256 Could you define direct connection to the parallel port please. Does this
mean I can wire the DB25 directly to the BDM and if yes how do I do that?
-----Original Message-----
From: Kellogg Dave [mailto:]
Sent: Wednesday, January 08, 2003 11:35 AM
To: '
Subject: RE: [68HC12] M68KIT912DP256 My board ran fine straight out of the box. I have had to be careful with
using the P&E BDM module. In my experience, the BDM prefers to be
directly
connected to the PC's parallel port. If things get flakey, try a direct
connect. Caution, This was marginal enough that diagnosing the cause was
difficult because back-to-back tests would give differing results. 607-656-2597 -----Original Message-----
From: hc12 [mailto:]
Sent: Tuesday, January 07, 2003 9:48 PM
To: hc12
Subject: [68HC12] M68KIT912DP256 Hi All,

The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
Before I start working with it, I was wondering if any of you know of any
problems or gotchas with the kit not already documented in errata.

Thanks,
Rich
--------------------
">http://docs.yahoo.com/info/terms/

--------------------
">http://docs.yahoo.com/info/terms/


Appreciate these posts. I had given up on the P&E pod and gone back to
good old Debug12. (I continue to use the Metrowerks editor tho'.) Since
my target uses the PLL for 16MHz bus speed, the only way to debug is to
write the contents of suspect variables to the LCD screen on the
target. [Actually not such a bad way to proceed.]

Anyway these posts give me encouragement to try the P&E pod again..

Bruce
_______________________________________
Kellogg Dave wrote:

> I simply plugged the BDM module straight onto the back of my PC (DB25M <-->
> DB25F). This way my only reliable configuration. BTW, I have a full tower
> Gateway.
>
> To make up for the lost cable length, I extended the 6-pin side using CAT-5E
> cable and using the twisted twins as ground shields. 15 feet worked OK, but
> I generally keep it down to about 5'. > 607-656-2597 > -----Original Message-----
> From: Stephen Mac Neil [mailto:]
> Sent: Wednesday, January 08, 2003 12:31 PM
> To:
> Subject: RE: [68HC12] M68KIT912DP256 > Could you define direct connection to the parallel port please. Does this
> mean I can wire the DB25 directly to the BDM and if yes how do I do that? >
> -----Original Message-----
> From: Kellogg Dave [mailto:]
> Sent: Wednesday, January 08, 2003 11:35 AM
> To: '
> Subject: RE: [68HC12] M68KIT912DP256 > My board ran fine straight out of the box. I have had to be careful with
> using the P&E BDM module. In my experience, the BDM prefers to be
> directly
> connected to the PC's parallel port. If things get flakey, try a direct
> connect. Caution, This was marginal enough that diagnosing the cause was
> difficult because back-to-back tests would give differing results. > 607-656-2597 > -----Original Message-----
> From: hc12 [mailto:]
> Sent: Tuesday, January 07, 2003 9:48 PM
> To: hc12
> Subject: [68HC12] M68KIT912DP256 > Hi All,
>
> The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
> Before I start working with it, I was wondering if any of you know of any
> problems or gotchas with the kit not already documented in errata.
>
> Thanks,
> Rich >
> -------------------- >
> ">http://docs.yahoo.com/info/terms/ >
>
> -------------------- >
> ">http://docs.yahoo.com/info/terms/ >
> -------------------- >
> ">http://docs.yahoo.com/info/terms/ > .


--
Bruce McMillan
www.Pocket-Neurobics.com Tools for the Mind
a division of Minder Labs PL ACN 093279915
..pocket-sized, integrated 4ch neurofeedback and light & sound



Let us not forget the most common cause of BDM module
problems: A non standard LPT port. Our experience with Dell
LPT ports is that they almost work, giving the impression
that the problem may be something else. I have heard that Hp
& Compaq printer ports do not always interface nicely with
BDM modules.

We have not heard of any LPT compatibility problems on
generic, no-name PC's :o)

Bfn,

Bob Furber

__________________________________________________________

Connect your micro to the internet the easy way
www.microcommander.com

Microcontroller with an obscenity of I/O & features
..in a small footprint www.steroidmicros.com
__________________________________________________________


Bruce and all,

From reading these postings, one can get the impression there is only one
BDM emulator available for the HC12/HCS12, and it has many problems, and
there is nothing to do about it.

Well, there are other BDM emulators for the HC12/HCS12 available in the
market. And guess what? They don't have any of the reported problems here.
Nohau is selling a BDM for $1990, plugging to either USB, LPT port or a
dedicated ISA card. Other vendors exist as well. Yes, it is more expensive
than the P&E, but on the other hand it will save some of your frustration,
and will return its investment by saving the time you mess up with problems.

You are saying you intend to debug your code by writing suspect variables
to the LCD. Well, you will save yourself a lot of time by using a good
debugger. Think only of the amount of time you will be investing in
recompiling code to write suspect variables to the LCD and flashing it to
the HC12. Multiply that by several variables, and several compile-flash
iterations to resolve each bug, and it starts to add up quit fast. How many
debugging hours do you need to save in order to return a $1990 investment
on a good BDM? Not many is my guess.

A 10 day trial period, to evaluate the emulator is also possible.

Doron
Nohau Corporation
HC12 In-Circuit Emulators
www.nohau.com/emul12pc.html

>Appreciate these posts. I had given up on the P&E pod and gone back to
>good old Debug12. (I continue to use the Metrowerks editor tho'.) Since
>my target uses the PLL for 16MHz bus speed, the only way to debug is to
> write the contents of suspect variables to the LCD screen on the
>target. [Actually not such a bad way to proceed.]
>
>Anyway these posts give me encouragement to try the P&E pod again..
>
>Bruce
>_______________________________________
>Kellogg Dave wrote:
>
> > I simply plugged the BDM module straight onto the back of my PC (DB25M <-->
> > DB25F). This way my only reliable configuration. BTW, I have a full tower
> > Gateway.
> >
> > To make up for the lost cable length, I extended the 6-pin side using
> CAT-5E
> > cable and using the twisted twins as ground shields. 15 feet worked
> OK, but
> > I generally keep it down to about 5'.
> >
> >
> > 607-656-2597
> >
> >
> > -----Original Message-----
> > From: Stephen Mac Neil [mailto:]
> > Sent: Wednesday, January 08, 2003 12:31 PM
> > To:
> > Subject: RE: [68HC12] M68KIT912DP256
> >
> >
> > Could you define direct connection to the parallel port please. Does this
> > mean I can wire the DB25 directly to the BDM and if yes how do I do that?
> >
> >
> >
> > -----Original Message-----
> > From: Kellogg Dave [mailto:]
> > Sent: Wednesday, January 08, 2003 11:35 AM
> > To: '
> > Subject: RE: [68HC12] M68KIT912DP256
> >
> >
> > My board ran fine straight out of the box. I have had to be careful with
> > using the P&E BDM module. In my experience, the BDM prefers to be
> > directly
> > connected to the PC's parallel port. If things get flakey, try a direct
> > connect. Caution, This was marginal enough that diagnosing the cause was
> > difficult because back-to-back tests would give differing results.
> >
> >
> > 607-656-2597
> >
> >
> > -----Original Message-----
> > From: hc12 [mailto:]
> > Sent: Tuesday, January 07, 2003 9:48 PM
> > To: hc12
> > Subject: [68HC12] M68KIT912DP256
> >
> >
> > Hi All,
> >
> > The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
> > Before I start working with it, I was wondering if any of you know of any
> > problems or gotchas with the kit not already documented in errata.
> >
> > Thanks,
> > Rich
> >
> >
> >
> >
> >
> >
> > --------------------
> >
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> >
> >
> >
> > --------------------
> >
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
> >
> > --------------------
> >
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
> > .
> >
> >--
>Bruce McMillan
>www.Pocket-Neurobics.com Tools for the Mind
>a division of Minder Labs PL ACN 093279915
>..pocket-sized, integrated 4ch neurofeedback and light & sound >
>-------------------- >
>">http://docs.yahoo.com/info/terms/



We have 2 Noral BDM pods and have never had a problem using the supplied
parallel port cable (6 ft) and gateway computers. They were also in the 2K
range (each) and to praise them by saying we never had a problem is an
injustice. We _love_ them for the flawless operation and the slick debug
software that they obviously invested a lot of time to develop. They were
eager to let us evaluate one for 30 days and provided tech support to get us
up and running even though we were not paying customers. There are other
solutions out there and you need to take the time to evaluate the tools
before buying. It may delay development, but that cost will be recovered
when the tools are able to do what they are intended.

Jared

-----Original Message-----
From: Doron Fael [mailto:]
Sent: Thursday, January 09, 2003 2:07 AM
To:
Subject: Re: [68HC12] M68KIT912DP256

Bruce and all,

From reading these postings, one can get the impression there is only one
BDM emulator available for the HC12/HCS12, and it has many problems, and
there is nothing to do about it.

Well, there are other BDM emulators for the HC12/HCS12 available in the
market. And guess what? They don't have any of the reported problems here.
Nohau is selling a BDM for $1990, plugging to either USB, LPT port or a
dedicated ISA card. Other vendors exist as well. Yes, it is more expensive
than the P&E, but on the other hand it will save some of your frustration,
and will return its investment by saving the time you mess up with problems.

You are saying you intend to debug your code by writing suspect variables
to the LCD. Well, you will save yourself a lot of time by using a good
debugger. Think only of the amount of time you will be investing in
recompiling code to write suspect variables to the LCD and flashing it to
the HC12. Multiply that by several variables, and several compile-flash
iterations to resolve each bug, and it starts to add up quit fast. How many
debugging hours do you need to save in order to return a $1990 investment
on a good BDM? Not many is my guess.

A 10 day trial period, to evaluate the emulator is also possible.

Doron
Nohau Corporation
HC12 In-Circuit Emulators
www.nohau.com/emul12pc.html

>Appreciate these posts. I had given up on the P&E pod and gone back to
>good old Debug12. (I continue to use the Metrowerks editor tho'.) Since
>my target uses the PLL for 16MHz bus speed, the only way to debug is to
> write the contents of suspect variables to the LCD screen on the
>target. [Actually not such a bad way to proceed.]
>
>Anyway these posts give me encouragement to try the P&E pod again..
>
>Bruce
>_______________________________________
>Kellogg Dave wrote:
>
> > I simply plugged the BDM module straight onto the back of my PC (DB25M
<-->
> > DB25F). This way my only reliable configuration. BTW, I have a full
tower
> > Gateway.
> >
> > To make up for the lost cable length, I extended the 6-pin side using
> CAT-5E
> > cable and using the twisted twins as ground shields. 15 feet worked
> OK, but
> > I generally keep it down to about 5'.
> >
> >
> > 607-656-2597
> >
> >
> > -----Original Message-----
> > From: Stephen Mac Neil [mailto:]
> > Sent: Wednesday, January 08, 2003 12:31 PM
> > To:
> > Subject: RE: [68HC12] M68KIT912DP256
> >
> >
> > Could you define direct connection to the parallel port please. Does
this
> > mean I can wire the DB25 directly to the BDM and if yes how do I do
that?
> >
> >
> >
> > -----Original Message-----
> > From: Kellogg Dave [mailto:]
> > Sent: Wednesday, January 08, 2003 11:35 AM
> > To: '
> > Subject: RE: [68HC12] M68KIT912DP256
> >
> >
> > My board ran fine straight out of the box. I have had to be careful
with
> > using the P&E BDM module. In my experience, the BDM prefers to be
> > directly
> > connected to the PC's parallel port. If things get flakey, try a
direct
> > connect. Caution, This was marginal enough that diagnosing the cause
was
> > difficult because back-to-back tests would give differing results.
> >
> >
> > 607-656-2597
> >
> >
> > -----Original Message-----
> > From: hc12 [mailto:]
> > Sent: Tuesday, January 07, 2003 9:48 PM
> > To: hc12
> > Subject: [68HC12] M68KIT912DP256
> >
> >
> > Hi All,
> >
> > The Motorola HCS12 dev board (M68KIT912DP256) I ordered arrived today.
> > Before I start working with it, I was wondering if any of you know of
any
> > problems or gotchas with the kit not already documented in errata.
> >
> > Thanks,
> > Rich
> >
> >
> >
> >
> >
> >
> > --------------------
> >
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> >
> >
> >
> > --------------------
> >
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
> >
> > --------------------
> >
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
> > .
> >
> >--
>Bruce McMillan
>www.Pocket-Neurobics.com Tools for the Mind
>a division of Minder Labs PL ACN 093279915
>..pocket-sized, integrated 4ch neurofeedback and light & sound >
>-------------------- >
>">http://docs.yahoo.com/info/terms/

--------------------
">http://docs.yahoo.com/info/terms/