怎么给XAR0-XAR7赋值?

peter,

你这种方法属于直接寻址，

MOVL XAR2,#Array1 ; Load XAR2 with start address of Array1

所以地址范围超出了。

XAR0 to XAR7 (auxiliary register pointers): In this mode, the 32-bit XARn registers behave as generic data pointers. The instruction can direct to post-increment, pre/post-decrement, or index from the current register contents with either a 3-bit immediate offset field or with the contents of another 16-bit register.

你可以参照一下TMS320C28x CPU and Instruction Set Reference Guide p133，里面的汇编指令并没有把数据放在XARn的指令。

Eric

loc32
Selects Direct/Stack/Indirect/Register addressing mode for 32-bit data access

# Immediate operand

MOVL XARn,loc32    Load 32-bit auxiliary register

MOVL XAR0,@0x410    把地址0x410的值放入辅助寄存器，间接寻址

MOVL XAR0,#0x410     把数值0x410放入辅助寄存器，直接寻址

我怎么写XAR2=0x55555555呢？

asm(" MOV AL,#0x5555");
 asm(" MOV AH,#0x5555 ");
 asm(" MOVL XAR0,@ACC ");

XAR0写入了0x55555555，怎么比较，确认XAR0 = 0x55555555?

我想做的是CPUREGISTER CHECK,

先写辅助寄存器XAR0 = 0X55555555，然后比较，确认XAR0=0x55555555写入成功

然后再写辅助寄存器XAR0 = 0XAAAAAAAA，然后比较，确认XAR0=0xAAAAAAAA写入成功

确认辅助寄存器XAR0能正常工作