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有人可以帮我完成这个程序吗？它应该将 14 添加到从 x4000 开始的数字并存储从 x5000 开始的新数字。我刚开始使用 LC-3，但我们还没有学会用它实际编码。这段代码只有 3 个错误，但我不确定我应该修复什么。

                               ;Program to copy an array of data from one block of memory to another .
                               ;Add decimal 14 to the value of each word before storing in the destination array.
                               ;Keep copying until the program reaches a zero value in the source array.

        .ORIG    x3000         ;Program starts at address hex 3000
        LEA      R0, SRC       ;Load address of SRC into Register 0
        LD       R1, DEST      ;Load contents of memory address DEST into Register 1
LOOP    LDR      R2, R0, #0    ;Load contents of memory location whose address is in R0 into R2
        BRZ      SRC           ;If last operation was zero, branch to end
        ADD      R2, R2, #14   ;Add decimal 14 to value in R2
        STR      R2, R1, #0    ;Store contents of R2 into memory whose address is in R1
        ADD      R0, R0, #1    ;Add 1 to R0
        ADD      R1, R1, #1    ;Add 1 to R1
        BRN      LOOP          ;If last operation was negative, branch to LOOP
DONE    TRAP     x25           ;Trap to HALT the program.
SRC     .FILL    x4000         ;Address of start of source data array
DEST    .FILL    x5000         ;Address of start of destination array.
        .END
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                               ;Program to copy an array of data from one block of memory to another .
                               ;Add decimal 14 to the value of each word before storing in the destination array.
                               ;Keep copying until the program reaches a zero value in the source array.

        .ORIG    x3000         ;Program starts at address hex 3000
        LD      R0, SRC        ;(Changed) from LEA to LD Load address of SRC into Register 0
        LD       R1, DEST      ;Load contents of memory address DEST into Register 1
LOOP    LDR      R2, R0, #0    ;Load contents of memory location whose address is in R0 into R2
        BRZ      DONE          ;(Changed) from SRC to DONE If last operation was zero, branch to end
        ADD      R2, R2, #14   ;Add decimal 14 to value in R2
        STR      R2, R1, #0    ;Store contents of R2 into memory whose address is in R1
        ADD      R0, R0, #1    ;Add 1 to R0
        ADD      R1, R1, #1    ;Add 1 to R1
        BR       LOOP          ;(Changed) from BRN to BR regardless of the condition it branches to LOOP
DONE    TRAP     x25           ;Trap to HALT the program.
SRC     .FILL    x4000         ;Address of start of source data array
DEST    .FILL    x5000         ;Address of start of destination array.
        .END
于 2013-11-07T16:07:54.053 回答