AT89C51RD2 XRAM access query

Hello,

I am using AT89C51RD2 as it has 1792 XRAM.

Now,I am using its default XRAM 768 bytes of XRAM.

Now,I want its whole 1792 bytes of XRAM.

I have initialized its AUXR with 0x11.But when I initializes it with this value, code execution stops.

I have given LED blinking status to indicate whether code is working or not.When I initializes it with 0x11 and adds an extra variable then code executions stops.

Please tell me solution for the same,if any.

Thanking you.

Regards,
Abhijeet R. Mudgal.

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