diff --git a/src/BIOS_equ.asm b/src/BIOS_equ.asm
new file mode 100644
index 0000000..bfbec56
--- /dev/null
+++ b/src/BIOS_equ.asm
@@ -0,0 +1,3 @@
+; EQUs (lazy variables) for BIOS stuff
+BIOS_INT equ 0x10
+BIOS_MODE_TELETYPE equ 0x0e
diff --git a/src/bootloader.asm b/src/bootloader.asm
index 2ce8ab4..4b0f2c7 100644
--- a/src/bootloader.asm
+++ b/src/bootloader.asm
@@ -1,8 +1,9 @@
 %include "equ/BIOS.asm"
 %include "equ/ASCII.asm"
 
-mov ah, 0x0e ; enter teletype mode (BIOS)
+mov ah, BIOS_MODE_TELETYPE ; enter teletype mode (BIOS)
 
+; Print "eOS"
 mov al, "e"
 int BIOS_INT 
 
@@ -34,6 +35,7 @@ loop:
 	cmp al, 90 ; 26 letters in english alphabet (64 + 26)
 	jl loop ; if al < 64+26: jmp loop
 
+
 jmp $ 
 
 times 510-($-$$) db 0