A table showing the assembly language for a general purpose processor is shown at the end of this question. For

each instruction, the operation is specified and the flags that are affected by the instruction are listed. You can

determine when an instruction will set or clear a particular flag based on your knowledge of the meaning of the

flag and the operation being performed. For example, after an addition the carry flag would indicate whether

there was a carry out of the most significant byte.

Assume that before the instruction ADDR$2,R0$ is executed, the flags are $C=0,Z=0$ and $N=1$ and the Registers have

the values $R0={56}_{16},R1=5f_{16}R2=0c_{16}$ and $R3={42}_{16}.$ If the input to the processor is $5f_{16},$ what are the values of the

flags after the instruction executes?

$C=$

A

$Z=$

A

$N=$

Assembly Table

Assembly Instruction Format

ADD Rd$,$Rs

SUB Rd$,$Input

SUB Rd$,$Rs

BZC ADDR

BZS ADDR

BNC ADDR

BNS ADDR

BCC ADDR

BCS ADDR

JMP ADDR

Effect on Flags

$RdRd+Rs,Z,N,C$

Rd $$ Rd$-$Rs $,$ Z$,$N$,$C

Rd $$ Rd$-$Rs Z$,$N$,$C

Branch if $Z$ clear None

Branch if $Z$ set None

Branch if $N$ clear None

Branch if $N$ set None

Branch if $C$ clear None

Branch if $C$ set None

Jump to ADDR None