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Problem 7 What does the following LC-3 program do? .ORIG X3000 LEA R6, STACKBASE RO, PROMPT x22 LEA TRAP : PUTS AND R1, R1, #0 LOOP TRAP x20 ; IN x21 R3, RO, #-10 INPUTDONE TRAP ADD ; Check for newline BRZ JSR PUSH R1, R1, #1 LOOP ADD BRnzp INPUTDONE ADD R1, R1, #0 BRz DONE LOOP2 JSR РОP TRAP x21 ADD R1, R1, #-1 LOOP2 BRP TRAP ; HALT DONE x25 R6, R6, #-2 RO, R6, #0 PUSH ADD STR RET RO, R6, #0 R6, R6, #2 POP LDR ADD RET STRINGZ Please enter a sentence: %3B PROMPT STACKS PAC .BLKW #50 STACKBASE .FILL #0 .END

Problem 7 What does the following LC-3 program do? .ORIG X3000 LEA R6, STACKBASE RO, PROMPT x22 LEA TRAP : PUTS AND R1, R1, #0 LOOP TRAP x20 ; IN x21 R3, RO, #-10 INPUTDONE TRAP ADD ; Check for newline BRZ JSR PUSH R1, R1, #1 LOOP ADD BRnzp INPUTDONE ADD R1, R1, #0 BRz DONE LOOP2 JSR РОP TRAP x21 ADD R1, R1, #-1 LOOP2 BRP TRAP ; HALT DONE x25 R6, R6, #-2 RO, R6, #0 PUSH ADD STR RET RO, R6, #0 R6, R6, #2 POP LDR ADD RET STRINGZ Please enter a sentence: %3B PROMPT STACKS PAC .BLKW #50 STACKBASE .FILL #0 .END

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Problem 7 What does the following LC-3 program do? ORIG X3000 LEA R6, STACKBASE RO, PROMPT LEA TRAP x22 ; PUTS AND R1, R1, #0 LOOP TRAP x20 : IN TRAP x21 ADD R3, RO, #-10 ; Check for newline BRZ INPUTDONE JSR PUSH ADD R1, R1, #1 BRnzp INPUTDONE ADD LOOP R1, R1, #0 BRz DONE LOOP2 JSR POP TRAP x21 R1, R1, #-1 LOOP2 x25 ADD BRp TRAP ; HALT DONE R6, R6, #-2 RO, R6, #0 PUSH ADD STR RET RO, R6, #0 R6, R6, #2 POP LDR ADD RET .STRINGZ Please enter a sentence: %3B PROMPT STACKSPAC .BLKW #50 STACKBASE .FILL #0 .END
Transcribed Image Text:Problem 7 What does the following LC-3 program do? ORIG X3000 LEA R6, STACKBASE RO, PROMPT LEA TRAP x22 ; PUTS AND R1, R1, #0 LOOP TRAP x20 : IN TRAP x21 ADD R3, RO, #-10 ; Check for newline BRZ INPUTDONE JSR PUSH ADD R1, R1, #1 BRnzp INPUTDONE ADD LOOP R1, R1, #0 BRz DONE LOOP2 JSR POP TRAP x21 R1, R1, #-1 LOOP2 x25 ADD BRp TRAP ; HALT DONE R6, R6, #-2 RO, R6, #0 PUSH ADD STR RET RO, R6, #0 R6, R6, #2 POP LDR ADD RET .STRINGZ Please enter a sentence: %3B PROMPT STACKSPAC .BLKW #50 STACKBASE .FILL #0 .END
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