401dbb04:       90 00 20 00     rcsr r4,IE
401dbb08:       20 83 ff fe     andi r3,r4,0xfffe
401dbb0c:       d0 03 00 00     wcsr IE,r3
401dbb10:       20 84 00 01     andi r4,r4,0x1
401dbb14:       28 23 00 00     lw r3,(r1+0)
401dbb18:       34 63 ff ff     addi r3,r3,-1
401dbb1c:       58 23 00 00     sw (r1+0),r3
401dbb20:       20 84 00 01     andi r4,r4,0x1
401dbb24:       90 00 10 00     rcsr r2,IE
401dbb28:       20 42 ff fe     andi r2,r2,0xfffe
401dbb2c:       b8 44 10 00     or r2,r2,r4
401dbb30:       d0 02 00 00     wcsr IE,r2


401dbb04:       90 00 20 00     rcsr r4,IE
401dbb08:       20 83 ff fe     andi r3,r4,0xfffe
401dbb0c:       d0 03 00 00     wcsr IE,r3
401dbb14:       28 23 00 00     lw r3,(r1+0)
401dbb18:       34 63 ff ff     addi r3,r3,-1
401dbb1c:       58 23 00 00     sw (r1+0),r3
401dbb30:       d0 02 00 00     wcsr IE,r4