P10 SetSemiTrans

00023c68: 10a00004 beq r5,r0,0x00023c7c           branch if p2 = 0
00023c6c: 00000000 nop
00023c70: 90820007 lbu r2,0x0007(r4)
00023c74: 08008f22 j 0x00023c88
00023c78: 34420002 ori r2,r2,0x0002               flag semi transparency
00023c7c: 90820007 lbu r2,0x0007(r4)
00023c80: 00000000 nop
00023c84: 304200fd andi r2,r2,0x00fd              unflag semi transparency
00023c88: 03e00008 jr r31
00023c8c: a0820007 sb r2,0x0007(r4)