P05 IsEndPrim

00023b98: 3c0300ff lui r3,0x00ff
00023b9c: 8c820000 lw r2,0x0000(r4)           load next primative address
00023ba0: 3463ffff ori r3,r3,0xffff           address bitmask
00023ba4: 00431024 and r2,r2,r3               get address for next primative
00023ba8: 00431026 xor r2,r2,r3               if 0x00ffffff (end primative), prim == 0
00023bac: 03e00008 jr r31
00023bb0: 2c420001 sltiu r2,r2,0x0001         return 1 if current primative is final