Global Page on MC9S12XDP12

[phil26]

Hello,

I work with codewarrior and a with a BDM p&E multilink sensor. I'm developping a bootloader for S12X and I have a problem to write at the adress 0xC000.

For me the logic adress 0xC000 is the same address that the global address 0x7FC000.

But If I display the logic adress 0xC000 and the global adress 0x7FC000 with the debugger Metrowerks I haven't the same value !!!

The driver flash works correctly because I write with out problem at the address 0x7F4000 and i see the same value at adress  0x4000.

Why it doesn't work for the address 0xC000 ?

Thank you for your help.

phil

[Alban · Accepted solution]

Hi Phil,

A common mistake is to look at $C000 on the XGATE map, in this case this matches $FC000 global.

Maybe the window is set to look at XGATE map and was setup up as Logical (CPU) for $4000.

Cheers,

Alban

Message Edited by Alban on 2006-09-11 04:46 PM