Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 12, Problem 19RQ
Program Plan Intro
BSL instruction:
- BSL is the abbreviation for Bit Shift Left.
- BSL shifts the bit status from a lower address number to a higher address number.
- First it loads the data into an array, then shifts the data pattern through the array to the left, and finally unloads the last bit of data in the array.
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Students have asked these similar questions
(d) The table below shows the ALUcontrol signal of the datapath we discussed in class.
Instruction
Funct
ALU
Орсode
ALUop
ALU action
operation
field
control
Iw
00
load word
XXXXXX
add
0010
Sw
00
store word
XXXXXX
add
0010
beq
01
branch equal
subtract
0110
XXXXXX
R-type
10
add
100000
add
0010
R-type
10
subtract
100010
subtract
0110
R-type
10
AND
100100
AND
0000
R-type
10
OR
100101
OR
0001
R-type
10
set on less than
101010
set on less than
0111
You want to add the bne instruction into the datapath, which already includes the
required hardware for the instruction. Write out the ALUop for bne and how you can
determine whether the bne results in the branch to be taken.
What is the final value in AL and BL registers?
Does the CMPS instruction provide any areas of ambiguity?
Chapter 12 Solutions
Programmable Logic Controllers
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Explain the working principal of Flags Registers in 64bit,arrow_forwardWhat is the difference between an LEA SI,NUMB instruction and a MOV SI,OFFSET NUMB instruction?arrow_forwardThe largest positive offset that can be used by an LC-3 instruction that utilizes the base+offset addressing mode isarrow_forward
- What kind of operands may be used with the FADD instruction?arrow_forwardCategory: CPU Wiring Look at the following (incomplete) diagram of the Hack CPU taken from figure 5.9 of the textbook. ALU output outM instruction AM inM writeM A addressM inc reset PC po Match the wires A, B, C, D and E with the logic expression that describes the signal they should carry. The logic expressions use the operators not (!), and (&&) and or (I). The 16 wire instruction is named instr. The A and C instruction formats are: A-instruction: 0 V. V. V C-instruction: 1 1 1 a c1 c2 c3 c5 c6 d1 d2 d3 j1 j2 j3 Mire number: 15 14 13 12 11 10 9 8 6. 4 3 1 instr[15) && instr[3] B. instr[14] ALUarrow_forwardASSEMBLY The XOR instruction inverts each bit in a destination operand. True Falsearrow_forward
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