2.12 Assume that registers $80 and $sl hold the values 0x80000000 and OxD0000000, respectively. 2.12.3 [5] For the contents of registers $50 and $s1 as specified above what is the value of $t0 for the following assembly code? sub $t0, $50, $s1 2.12.4 [5] Is the result in $t0 the desired result, or has there been overflow 2.12.5 [5] For the contents of registers $50 and $s1 as specified above what is the value of $t0 for the following assembly code? add $t0, $50, $51 add $t0,$t0, $50