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Data Abort on mapped address

Hi,

When I debug a LPC2103 program on MDK 3.22a, it always prompt me Data Abort error:

Data Abort: ARM Instruction at 00000428H, Memory Access at E0068020H

E0068020H is SSPICR register in LPC2103, and I had mapped this address in my ini file, like below:

/*Fast GPIO*/
MAP 0x3FFFC000,0x3FFFC01F READ WRITE
/*SPI*/
MAP 0xE0068000,0xE006802F READ WRITE

Note that accessing to 0x3FFFC000 has no error.

Please help me, thanks a lot!

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