diff --git a/include/global.h b/include/global.h
index 2788180..bd7418e 100644
--- a/include/global.h
+++ b/include/global.h
@@ -101,6 +101,7 @@ extern MallocRecord D_800F8E58;
 extern u8 D_800FAAF8;
 extern u8 D_800FAB1C;
 extern u8 D_800FAB20;
+extern UNK_TYPE D_80108620;
 extern UNK_TYPE D_80108624;
 extern UNK_TYPE D_80108628;
 extern UNK_TYPE D_8010DF40;
diff --git a/src/main/O2/70100.c b/src/main/O2/70100.c
new file mode 100644
index 0000000..9e2c39e
--- /dev/null
+++ b/src/main/O2/70100.c
@@ -0,0 +1,23 @@
+#include "global.h"
+
+#define WAIT_ON_IOBUSY_ALT(stat)       \
+    do {                               \
+        stat = IO_READ(PI_STATUS_REG); \
+    } while (stat & (PI_STATUS_IO_BUSY | PI_STATUS_DMA_BUSY))
+
+#define ADDRESS_1 (PI_DOM1_ADDR2 + 0x458) // 0x10000458
+#define ADDRESS_2 (PI_DOM1_ADDR2 + 0x45C) // 0x1000045C
+
+void func_8006F500(void) {
+    register u32 stat;
+    u16 addr1Val;
+    u16 addr2Val;
+
+    WAIT_ON_IOBUSY_ALT(stat);
+    addr1Val = IO_READ(ADDRESS_1);
+
+    WAIT_ON_IOBUSY_ALT(stat);
+    addr2Val = IO_READ(ADDRESS_2);
+
+    D_80108620 = (addr1Val << 16) | addr2Val;
+}
diff --git a/yamls/us/main.yaml b/yamls/us/main.yaml
index 67e3287..28c756b 100644
--- a/yamls/us/main.yaml
+++ b/yamls/us/main.yaml
@@ -57,6 +57,7 @@
       - [0x6CB80, asm]
       - [0x6DBC0, asm]
       - [0x6DF40, asm] # Probably has at least 1 file split
+      - [0x70100, c, O2/70100]
       - [0x70160, asm]
       - [0x70200, c, fault]
       - [0x720B0, pad]