diff --git a/emu.js b/emu.js
index c9943d4..11f497d 100644
--- a/emu.js
+++ b/emu.js
@@ -8,10 +8,10 @@ const RXTAIL = 0x10c;
 const SYSREADY = 0x110;
 const SYSINTER = 0x114;
 
-const DOT_INTERVAL_MS = 120;
 const PERIPHS_SIZE = 0x200;
 
 const POLL_INTERVAL_MS = 5;
+const DOT_INTERVAL_MS = 25;
 
 const COLS = 80;
 const TAB_WIDTH = 8;