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请问编译器提示 Error[Ta028]: Placing a located variable above 0xffff is not allowed 的原因是什么？

LEI ZHENG2
Prodigy 30 points
Other Parts Discussed in Thread: MSP430F2618

IAR WorkBench 5.1，使用msp430f2618，main memory 0x03100 - 0x1FFFF，想将变量存入flash，比如

const double data @ 0xFC00 = 0.1; 这样没有问题。可如果将变量存储在0xFFFF之外，比如

const double data @ 0x1FC00 = 0.1; 则会报错 Error[Ta028]: Placing a located variable above 0xffff is not allowed

请问为什么不能将变量放置在高于0x0FFFF的地址？ flash应该还有空间。