1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/io_ports.asm b/kernel/io_ports.asm
new file mode 100644
index 0000000..9ab47d9
--- /dev/null
+++ b/kernel/io_ports.asm
@@ -0,0 +1,28 @@
+SECTION .text
+global outw
+global inw
+
+outw:
+    push ebp;
+    mov ebp,esp
+
+    mov dx, [ebp+8]     ; port
+    mov ax, [ebp+12]    ; data
+    out dx, ax
+
+    mov esp,ebp
+    pop ebp
+    ret
+
+
+inw:
+    push ebp;
+    mov ebp,esp
+
+    mov dx, [ebp+8]     ; port
+    in eax, dx
+
+    mov esp,ebp
+    pop ebp
+    ret
+