汇编bad instruction

"bad instruction"表示汇编程序中存在无法识别的指令。这种情况通常发生在使用错误的指令助记符或者错误的指令操作数时。

在汇编程序中，每个指令都有其对应的助记符和操作数，如果指令助记符或操作数错误，汇编器就会无法识别该指令，导致编译失败并提示"bad instruction"错误。

要解决这个问题，可以检查汇编程序中的指令是否正确，尤其是助记符和操作数是否与指令集中的规定相符。此外，也可以查看汇编器的错误提示信息，以确定具体是哪个指令出现了错误。

相关问题

bad instruction

回答: "bad instruction"的错误通常是由于错误的指令导致的。根据提供的引用内容来看，这个错误可能与编码格式有关。在引用中提到，将编码格式从"utf-8（with BOM）"改为"utf-8"解决了这个问题。同样，在引用中也提到了类似的解决方法，即在编辑器中选择合适的编码格式来保存文件，并将默认编码设置为UTF-8。因此，如果你遇到了"bad instruction"的错误，可能需要检查你的代码文件的编码格式是否正确，并进行相应的修改。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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JSRR instruction

The JSRR (Jump to Subroutine Register) instruction is a type of instruction in the LC-3 (Little Computer 3) assembly language. It is used to call a subroutine that is located at an address stored in a register.

The format of the JSRR instruction is:

JSRR BaseR

where `BaseR` is the register containing the address of the subroutine.

When the JSRR instruction is executed, the address of the next instruction (the return address) is pushed onto the stack, and the program counter (PC) is set to the address contained in `BaseR`.

The subroutine can then be executed, and when it is finished, it can return to the main program by using the `RET` (return from subroutine) instruction, which pops the return address off the stack and sets the PC to that address.

The JSRR instruction is useful for modularizing code and reducing code duplication by allowing the same code to be reused in multiple places.