diff --git a/README.md b/README.md
index 23d7a92..4d35359 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@ To build type
 
 which outputs an exectable named A1Emu.exe
 
+Next go to the working directory and copy a ROM for Integer Basic into the directory named "BASIC" (no extension). the emulator will copy the first 4KB of that file's contents into address 0xE000.
+
 The emulator runs in a normal console without any GUI, just like the original Apple 1 worked. You are greeted with a `\` character. Type the following to start Apple 1 BASIC:
 
 ```