my idea to resolve JMP in CPU

[osma78]

 Hi ,
 My idea to create a CHIP that output a bit to a load of a PC is to combine two truth table the first is the truth table of a JUMP bit of a C-Instruction , the second is of the zr and ng bits output of UAL , i locate when these combination output one , my question is "is this the correct reasoning ?" , "is there another solution easier than these ?" , my problem with my solution is that i get a very long boolean logic function whose simplification is very difficult , i need a help to terminate the CPU .
Thank you .

[ivant]

Reading Figure 4.5 we can see that a jump should occur if:

• this is a C instruction
• AND
  • j1 is set AND the result is negative
  • OR j2 is set and the result is zero
  • OR j3 is set and the result is positive

How can you tell if the instruction is C? How can you tell if the result is negative, zero or positive? Can you combine these things directly instead of using the truth tables?

[osma78]

Thank you for your help , u have terminate a CPu successfully , and a ll the computer Hardware .