Transfer Tiles Height Halves and Slope in Scratch Pad

001755a8: 3c038019 lui r3,0x8019
001755ac: 8c63f4e4 lw r3,-0x0b1c(r3)
001755b0: 00000000 nop
001755b4: 8c620000 lw r2,0x0000(r3)
001755b8: 00000000 nop
001755bc: 90420002 lbu r2,0x0002(r2)
001755c0: 8c640000 lw r4,0x0000(r3)
001755c4: 00021040 sll r2,r2,0x01
001755c8: a062004c sb r2,0x004c(r3)
001755cc: 90820003 lbu r2,0x0003(r4)
001755d0: 8c640000 lw r4,0x0000(r3)
001755d4: 3042001f andi r2,r2,0x001f
001755d8: a0620056 sb r2,0x0056(r3)
001755dc: 90820004 lbu r2,0x0004(r4)
001755e0: 03e00008 jr r31
001755e4: a0620058 sb r2,0x0058(r3)