原创 【博客大赛】简易cpu的设计2-汇编指令波形仿真

Simulated waveforms &Machine instructions:

Just  AND：

Machine instructions:

The ram.mif

The waveforms and results

Explanation: If s1=0036，s2=0064 Then s1 and s2? From the waveform we can

find s1 and s2=0024.

Just  not

Machine instructions:

The ram.mif

The waveforms and results

Explanation: If s1=1234,then not s1=? From the waveform we find s1=EDCB

Just  shiftr

Machine instructions:

The ram.mif

The waveforms and results

Explanation: If s1=1234,then shiftr s1=? From the waveform we find s1=091A.

ADD,SUB,MPY

Machine instructions:

The ram.mif

The waveforms and results

Explanation: s1=3,s2=4,s3=2,s4=7, From the waveform we find 3*4+2-7=7.

ADD,LOOP,MPY,DIV(1+2+…+49+50)*3/8

Machine instructions:

The ram.mif

The waveforms and results

Explanation: From the waveform we find 1+2+…+49+50=1275, 1275*3=3825,

3285/8=478.

The contents of location 21 is 478

Conclusions:

1、From the experiment we learn what is cpu, how the cpu works.

2、Through using quartus2 ,I learn to program by myself, in the experiment I found two errors ,then I try to solve the problem. Errors 1: ACTION: Successfully run the Timing Analyzer or Fitter before running timing simulation.　Solutions：start classic timing analyzer first; Errors 2: Error: Cannot run Timing Analyzer (quartus_tan) -- Fitter (quartus_fit) failed or was not run  solutions: start fitter first.

3、Of course, in the meantime I meet multiple difficulties, I ask my classmates, we help each other.

4、Programming needs to be patient, we should remember it.