Assets 2
The sim tests reported an error with:

 MACHI        MACLO     +        -2 *    -3
 0x00000000, 0x00000000, 0xfffffffe, 0xfffd

Returning:

 MACHI       MACLO
 0xfffffffd, 0x00000006

Instead of:

 0x00000000, 0x00000006

This was due to not properly sign extending the rA operand of l.maci.

Fixed and regenerated.