Alan B. Pearce wrote:
>> I've been stung by that. Bought a few Coldfire CPUs, then
>> found out the BDM debugging/programming pod costs about =A3200...
> =

> OK, so about the same cost as an ICD2 ...

Actually, my ICD2 only cost =A380, and Farnell are currently listing them a=
t =

=A393.02 + VAT, or =A3109.30 inc VAT. It's =A33 cheaper from MicrochipDIREC=
T, but =

there's P&P on top of that.

> But there is information out on the web that looks like you can build a
> complete BDM unit without getting anything from Freescale/Motorola.

The big problem is you wouldn't get the BDM software, and there's no GDB =

support for some of the slightly less mainstream Coldfire chips (e.g. the =

SCF5250 "Amadeus Plus" Coldfire MP3 decoder).

You can bootstrap them without BDM (using JTAG), but you'd have to write a =

(small!) bootloader that would fetch a program over the serial link and loa=
d =

it into Flash ROM. That said, the 5250 has an onboard bootloader that can r=
ead =

from a HDD or flash drive on the ATA (or MMC/SD/MS) interface. Or (IIRC) it =

can be made to load from the serial port. I'd have to check the 5250 =

programmer's manual to confirm that though...

-- =

Phil.                         | Kitsune: Acorn RiscPC SA202 64M+6G ViewFind=
er
philpem@dsl.pipex.com         | Cheetah: Athlon64 3200+ A8VDeluxeV2 512M+10=
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http://www.philpem.me.uk/     | Tiger: Toshiba SatPro4600 Celeron700 256M+4=
0G
-- =

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