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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 |
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M68KIT912DP256
Started by ●January 7, 2003
Reply by ●January 8, 20032003-01-08
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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/ |
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Reply by ●January 8, 20032003-01-08
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> 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 __________________________________________________________ |
Reply by ●January 8, 20032003-01-08
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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/ -------------------- |
Reply by ●January 8, 20032003-01-08
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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/ |
Reply by ●January 8, 20032003-01-08
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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/ |
Reply by ●January 8, 20032003-01-08
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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 |
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Reply by ●January 8, 20032003-01-08
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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 __________________________________________________________ |
Reply by ●January 9, 20032003-01-09
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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/ |
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Reply by ●January 9, 20032003-01-09
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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/ |
