P08 CatPrim

00023c2c: 3c0600ff lui r6,0x00ff
00023c30: 34c6ffff ori r6,r6,0xffff
00023c34: 3c03ff00 lui r3,0xff00
00023c38: 8c820000 lw r2,0x0000(r4)          load prim. address p1
00023c3c: 00a62824 and r5,r5,r6              p2 bitmasked address
00023c40: 00431024 and r2,r2,r3              p1 prim. func
00023c44: 00451025 or r2,r2,r5
00023c48: 03e00008 jr r31
00023c4c: ac820000 sw r2,0x0000(r4)          overwrite p1's next prim with p2 as next prim