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DATA to XDATA issue

Hi people,

I've some troubles with some variables declaration.
I'm using the old Keil compîler C51 V5.50.

When writing :

U8 u8CommandIndex=0;

with U8 = unsigned char, it's ok.

Now I want to relocate the variable into the XDATA segment. The declaration becomes :

xdata U8 u8CommandIndex=0;

But in this case, my variable isn't initialized to 0. The value is the last one before the reset.

Why the initialization isn't done in this case ?

Regards
Stephane