Gordon Doughman's Bootloader - 4KB to 2KB mod?

Started by varneybob July 10, 2003
Anyone know how to easily mod the bootloader by Gordon, so that only
the upper 2KB of Flash are used, instead of 4KB?



Hmm, is it just as easy as chaning BootBlkSize to 2048?

--- In , "varneybob" <varneybob@y...> wrote:
> Anyone know how to easily mod the bootloader by Gordon, so that
only
> the upper 2KB of Flash are used, instead of 4KB?





Try Orging from $F000 to $F800 and re-assemble. I looked and it
should fit to 2048 bytes. I looked at Doug assembled S record and it
starts from $F000 to F708 not including the vectors. --- In , "varneybob" <varneybob@y...> wrote:
> Hmm, is it just as easy as chaning BootBlkSize to 2048?
>
> --- In , "varneybob" <varneybob@y...> wrote:
> > Anyone know how to easily mod the bootloader by Gordon, so that
> only
> > the upper 2KB of Flash are used, instead of 4KB?




hi:

where can i find the source code for the boot loader. i have the app note
but can't seem to locate the code.

thanks in advance!

regards,

ed




the link is
http://e-www.motorola.com/webapp/sps/site/prod_summary.jsp?
code=MC9S12DP256B&nodeIdt3ZGpnLn8636K100

Download DB12S12FW.zip --- In , "Ed Taylor" <eeetee@t...> wrote:
> hi:
>
> where can i find the source code for the boot loader. i have the
app note
> but can't seem to locate the code.
>
> thanks in advance!
>
> regards,
>
> ed