Nintendo Ultra64 Programmer's Manual page 227

SUB
31 26 25
SPECIAL
0 0 0 0 0 0
6
Format:
sub rd, rs, rt
Description:
The contents of general register
result. The result is placed into general register
Since the RSP does not signal an overflow exception for SUB, this command behaves identically to
SUBU.
Operation:
GPR[rd]  GPR[rs] – GPR[rt]
T:
Exceptions:
None
Revision 1.0
Subtract
21 20 16 15
rs rt
5 5
rt
are subtracted from the contents of general register
11 10 6 5
rd 0
0 0 0 0 0
5 5
rd.
SUB
0
SUB
1 0 0 0 1 0
6
rs
to form a
227