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I have been scratching my head for a few hours now, thinking i was wrong while having proof that i'm not.
The problem is the following:
I load the .hdl and .tst file of my ALU into the simulator. I set the format to "Binary", and the view
to "Compare".
I check everything by using the "Single Step" button which is working like a charm for the first
20 clicks, on click nr. 21 something ... weird happens.
At this point i have the following:
Input: x[16]: 0000000000010001
y[16]: 0000000000000011
zx: 0
nx: 1
zy: 0
ny: 1
f: 0
no: 1
Output: out[16]: 1111111111111111
zr: 0
ng: 1
On program flow the following line is highlighted:
| 0000000000000000 | 1111111111111111 | 0 | 1 | 0 | 1 | 0 | 1 | 1111111111111111
Now, with these inputs i should (if i'm correct) get this output:
out[16]: 0000000000010011
zr: 0
ng: 0
Is the simulator messing up somewhere?
Do note that this test file does not give any errors when doing a full check on my ALU.
My best guess is that it checks everything correctly, but the information it shows in the "Output", "Internal pins" and "Program flow" is wrong.
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