The following Mic1 microcode excerpt shows support for a possible 7 bit opcode, 8 bit integer argument machine instruction (organized like the INSP instruction). This part of the microcode will be reached after the instruction opcode has been parsed and identified by earlier parts of the microcode and while the IR contains the complete instruction from memory (as usual for the IR). 100:a := band(smask, ir); 101:a := a + (-1); if n goto 0; 102:ac := rshift(ac); goto 101; What does this instruction do ? Left shift the AC places Right shift the AC places O Left circular shift the AC places Right circular shift the AC places Multiple the AC by 2^

Part 2: Status Flags There are more registers inside of the CPU that we don't have direct access to. One of these is the EFLAGS register. This register holds the values of the flags used in the CPU's operation. Flags are just single bit values that represent the state of the processor - usually 1 means a setting is on or true, and 0 means it is off or false.  If a flag has the value 1, we say the flag is set. If it has the value 0, we say it is clear. "Setting" a flag means setting it's value to 1, and "clearing" a flag means setting its value to 0.  The status flags are flags that show the outcomes of certain operations. These can be used to check the state of the computations and react accordingly. For example, the carry flag is set if the result of an unsigned addition is too large to fit into the same space as the numbers used during the addition. Look at the following addition operation: 11111111 + 00000001 = 100000000 Note that the result of the addition is 9 bits long, even…

MANUALLY decode the following ARM machine language code to ARM assembly instruction. Ox56D54386 Write your answer in TWO parts, the Op-Code in a box and ALL operands in another box. The Op-Code of the instruction is: The operands of the instruction are:

Orthogonality means that an instruction set has a "backup" instruction that can be used instead of any other instruction that does the same thing. It's up to you to prove or disprove what I think.