Re: DP256 - DP512 Transition

>
>
> Hi, Jonathan,
>
> Is it DP512 or XDP512 ?
> XDP512 vs DP256 has
> - a different scheme for quartz than DP256. Maybe it's why you have speed
> problem with your BDM, as the CPU run with it security clock, not quartz.
> It's the first problem I had when moving from DP256 to XDP512.
> - different page addresses (for me, with DP256, my pages begin at 0x30,
> XDP512 at 0xE0), so I had to rewrite some code.
> - some register addresses are different, so I had to rebuild my projects
> with the "good" include file.
>
> I use ICC12 V7 and NoIce debugger.
> ICC12V7 options are to generate "Linear S2 file", and NoIce load option is
> "S2 have linear addresses".
>
> Hope this help.
> Best regards.
> Joel
>
> -----Message d'origine-----
> De : 68HC12@... <mailto:68HC12%40yahoogroups.com>
> [mailto:68HC12@... <mailto:68HC12%40yahoogroups.com>] De
> la part de
> Jonathan Masters
> Envoyé : lundi 20 avril 2009 10:06
> À : 68HC12@... <mailto:68HC12%40yahoogroups.com>
> Objet : [68HC12] DP256 - DP512 Transition
>
> Hello All.
>
> I have recently started to upgrade an old board that uses DP256B's with
> DP512. I managed to program the board a couple of days ago with no issues.
>
> Today, I ran into a problem with my application code - it couldn't write
> to paged flash when downloading data from my PC app. This was quickly
> identified as a problem with the bank select in my flash loading routine.
>
> However no matter how hard I try today, I cannot get a P&E Multilink to
> load my original binary back into the chip. Most of the time I get "ELF
> Loader Error - Unable to program 00C000-00C200". Sometimes this is
> different - its all a bit flaky. I have tried two different pods, two
> different boards with the same results. An original board with a DP256
> works fine.
>
> I have tried using DP512 as the drivative in ICD12 as well as DP256 -
> neither makes any differences.
>
> Finally, I find that communications is frequently lost with the board
> after the programming failure. Thinking it could be a hardware problem I
> have changed crystals and reset chips to no avail.
>
> I think I have had all these problems before and they just seem to go
> away. Naturally they come back when under most pressure ;). My previous
> questions to the group on similar topic related to Quad Core machines.
>
> Has anyone got any suggestions where I can start looking?
>
> Jonathan Masters
>
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