diff --git a/tests/coverage/lsuGB.S b/tests/coverage/lsuGB.S
new file mode 100644
index 00000000..8a902ba7
--- /dev/null
+++ b/tests/coverage/lsuGB.S
@@ -0,0 +1,99 @@
+//lsuGB.S 
+// A set of tests meant to stress the LSU to increase coverage
+// Manuel Alejandro Mendoza Manriquez mmendozamanriquez@g.hmc.edu
+// Noah Limpert nlimpert@g.hmc.edu
+// March 28 2023
+
+
+// Test 2
+//Try to thrash ! used godbolt!
+// Cache ways 1,2,3 do not have SelFlush = 0
+// To make SelFlush = 0 we must evict lines from ways 1,2,3
+// Will load 4 words with same tags, filling 4 ways of cache
+// edit and store these words so that dirty bit is set ( is this necessary?)
+// Will then load 4 more words, evicting the previous 4 words 
+// will make SelFlush = 0 for all 4 ways. 
+
+// Load code to initialize stack, handle interrupts, terminate 
+#include "WALLY-init-lib.h"
+
+main:
+        addi    sp,sp,-32
+        sd      s0,24(sp)
+        addi    s0,sp,32
+        li      t1,-20480
+        add     sp,sp,t1
+        sw      zero,-20(s0)
+        j       .L2
+.L3:
+        li      a5,-4096
+        addi    a4,s0,-16
+        add     a4,a4,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a4,a5
+        lw      a4,-8(a5)
+        li      a5,-8192
+        addi    a3,s0,-16
+        add     a3,a3,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a3,a5
+        sw      a4,-8(a5)
+        li      a5,-8192
+        addi    a4,s0,-16
+        add     a4,a4,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a4,a5
+        lw      a4,-8(a5)
+        li      a5,-12288
+        addi    a3,s0,-16
+        add     a3,a3,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a3,a5
+        sw      a4,-8(a5)
+        li      a5,-12288
+        addi    a4,s0,-16
+        add     a4,a4,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a4,a5
+        lw      a4,-8(a5)
+        li      a5,-16384
+        addi    a3,s0,-16
+        add     a3,a3,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a3,a5
+        sw      a4,-8(a5)
+        li      a5,-16384
+        addi    a4,s0,-16
+        add     a4,a4,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a4,a5
+        lw      a4,-8(a5)
+        li      a5,-20480
+        addi    a3,s0,-16
+        add     a3,a3,a5
+        lw      a5,-20(s0)
+        slli    a5,a5,2
+        add     a5,a3,a5
+        sw      a4,-8(a5)
+        lw      a5,-20(s0)
+        addiw   a5,a5,1
+        sw      a5,-20(s0)
+.L2:
+        lw      a5,-20(s0)
+        sext.w  a4,a5
+        li      a5,1023
+        ble     a4,a5,.L3
+        nop
+        nop
+        li      t1,20480
+        add     sp,sp,t1
+        ld      s0,24(sp)
+        addi    sp,sp,32
+        j       done
\ No newline at end of file