1.L2MPPA/L1MPPA寄存器与实际存储器的对应关系:
L2MPPA寄存器有64个,但不知页大小,以下地址
L2DRAM(ADDR:0x00800000, SIZE:0x00040000)
ROM(ADDR:0x00700000, SIZE:0x00100000)
与L2MPPA寄存器的映射关系是如何?
同样L1MPPA的映射关系?
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TMS320C674x DSP Megamodule Reference Guide
4.6.2.2 Memory Protection Page Attribute Registers (L2MPPAxx)
Refer to the device-specific data manual or the device-specific System Reference Guide to determine the page size and number of pages used on a particular device.
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2.写未引起异常
L1MPPA与L2MPPA都初始化为0;
2.1、L1DRAM(ADDR:0x00F00000, SIZE:0x00008000)
读异常
写未异常
2.2、L2DRAM(ADDR:0x00800000, SIZE:0x00040000)
读异常
写未异常
2.3、ROM(ADDR:0x00700000, SIZE:0x00100000)
读异常,
写未异常
执行异常
写操作为何未引起异常?与用仿真器调试有关?
Tony Tang:
C6748 L1, L2 MPPA 属性,地址范围在datasheet table3-3.