open-source-silicon.dev

p-diff-distance-to-n-tap.png

<@U01634FSETZ> <@U016HSALFAN> I'm trying to get the last of my DRC issues sorted. I get a few of these at the edges near a macro (with a halo):
```----------------------------------------
P-diff distance to N-tap must be &lt; 15.0um (LU.3)
----------------------------------------
 5.655 1006.635 5.915 1007.505
 6.505 1006.635 6.765 1007.505
 7.035 1006.635 7.295 1007.505```


If you have only those, then you're fine; you can ignore them (see <https://skywater-pdk.slack.com/archives/C016YSAP6TZ/p1608236320339600> for more details). If you want to get rid of them, try decreasing the tapping distance to 13um or below. For example:
```set ::env(FP_TAPCELL_DIST) 13```

It's just saying that the distance to the nearest tap cell is &gt; 15um, which violates the tapping max spacing rule, but since you have only 3 or something, according to the thread above, you can ignore them.