Includes work fine when assembling from the shell

doc/zasm.md

@@ -22,7 +22,7 @@ is configured to start at `0xe00`
     > bsel 3                ; select mmap
     > peek 5
     210890CD3C              ; looking good
-    > mptr 9000             ; hello.asm is configured to run from 0x9000
+    > mptr 4200             ; hello.asm is configured to run from 0x4200
     > load ff               ; load compiled code from mmap
     > peek 5
     210890CD3C              ; looking good

tools/emul/cfsin/hello.asm

@@ -1,6 +1,5 @@
-.equ	printstr	0x3c
-
-.org	0x9000
+#include "user.h"
+.org	USER_CODE
 
 	ld	hl, sAwesome
 	call	printstr