diff --git a/src/machine/display.odin b/src/machine/display.odin
index e2b8876..9c384ef 100644
--- a/src/machine/display.odin
+++ b/src/machine/display.odin
@@ -27,19 +27,23 @@ run_system :: proc(s: ^System) {
             cycle(s)
         }
 
-        // update display with display buffer bits
-        // get row
-        for y in 0..<len(s.display) {
-            // get cols
-            for x in 0..<len(s.display[0]) {
-                if s.display[y][x] == 0x01 {
-                    rl.DrawRectangle(i32(x * SCALE), i32(y * SCALE), SCALE, SCALE, rl.WHITE)
-                }
-            }
-        }
+        render_display_buffer(&s.display)
 
         rl.EndDrawing()
     }
 
     rl.CloseWindow()
 }
+
+// update display with display buffer bits
+render_display_buffer :: proc(display_buffer: ^[32][64]u8) {
+    // get row
+    for y in 0..<len(display_buffer) {
+        // get cols
+        for x in 0..<len(display_buffer[0]) {
+            if display_buffer[y][x] == 0x01 {
+                rl.DrawRectangle(i32(x * SCALE), i32(y * SCALE), SCALE, SCALE, rl.WHITE)
+            }
+        }
+    }
+}