lab_A: ld 0x4E6F5465, %r1		!register 1 is set to 0x4E6F5465 ("NoTe")

lab_B: st %r1, 0x800			!contents of register 1 are stored into memory location 0x800

lab_C: ld 0x20202020, %r1		!string of four blanks are loaded into register 1

lab_D: addcc 0x800, 0x10101, 0x800	!0x10101 is added to value in memory location 0x800 and stored into 0x800

lab_E: st 0x800, %r31			!the new value at memory location 0x800 is stored into register 31

lab_F: xorcc %r1, %r31, %r7		!exclusive OR is performed between register 1 and 31: result is stored into register 7.
       st %r7, 0x400			!the result is stored into memory location  0x400