I understand how $s1= 0xA1F3, I dont understand how they got $t3=0xA1E9 and $t1=0xA1DF. I got $t3 = 0x001E?

Prob 4 For each of the three instructions in the following sequence, give the value requested. The initial state of some registers and relevant memory addresses are given. All values are given in decimal unless otherwise noted (0x notation refers to hex values) Register Value value 0xFF04 10 34 0x001A Memory address OxFEFC 0xFF00 0xFF04 OxFF08 0xFFOC 0x0 0x0002 0xAB10 OxA1F3 0x00F0 St0 St3 Ss0 Ss1 Answer (AFTER instruction executes S sl 1.lw Ss1, 4(St0) sub $tl, $t3, Stl t3 0xA1E9 $t1 - 0xA1DF