Suppose we define a service routine starting at memory location x4000. This routine reads in a character and echoes it to the screen. . ORIG x4000 ST R7, SaveR7 GETC OUT LD R7, SaveR7 RET SaveR7 .FILL x0000
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Question to be answered:
Which instruction (provide a memory address) is executed prior to instructionat locationx4003?
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