Here\'s how the problem works: Assemble the following PSoC code into machine lan

Question

Here's how the problem works:

Assemble the following PSoC code into machine language. Express each assembled line as: location, bytes for instruction. Use hexadecimal for all of the numbers. For example, the instruction ADD A, [6], starting at location 0x0102 becomes: 0102: 02 06.

LOOP:      ADD A, 3                    // this instruction begins at location 0x0100

                  ADC A, [X + 4]

                  MOV X, A

                  MOV A, REG[0x22]

                  INC  A

                  CMP A, 0x14

                  JZ     LOOP               // be careful to use the appropriate relative addressing to express the value LOOP

Explanation / Answer

0x100 : 02 03                 #LOOP: ADD A, 3 // this instruction begins at location 0x0100
0x102 : 0B 04                 #ADC A, [X + 4]
0x104 : 5C                      #MOV X, A
0x105 : 5D 22                #MOV A, REG[0x22]
0x107 : 74                       #INC A
0x108 : 39 14                 #CMP A, 0x14
0x10A : AF F5                 #JZ LOOP // jump 11 locations back -11 = 0xff5

all the opcodes are in hex.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.