diff --git a/recipes/sms/romasm/Makefile b/recipes/sms/romasm/Makefile
index 8be033e..131d8f7 100644
--- a/recipes/sms/romasm/Makefile
+++ b/recipes/sms/romasm/Makefile
@@ -2,8 +2,8 @@ ZASM = ../../../tools/zasm.sh
 KERNEL = ../../../kernel
 APPS = ../../../apps
 
-.PHONY: all
-all: os.sms ed.bin
+.PHONY: all clean
+all: os.sms
 
 ed.bin: $(APPS)/ed/glue.asm
 	echo ".equ USER_CODE ED_CODE" | cat user-tmpl.h - > user.h
@@ -16,3 +16,5 @@ zasm.bin: $(APPS)/zasm/glue.asm
 os.sms: glue.asm ed.bin zasm.bin
 	$(ZASM) $(KERNEL) ed.bin zasm.bin < $< > $@
 
+clean:
+	rm -f os.sms ed.bin zasm.bin
diff --git a/recipes/sms/romasm/glue.asm b/recipes/sms/romasm/glue.asm
index 0671511..8d5c2bd 100644
--- a/recipes/sms/romasm/glue.asm
+++ b/recipes/sms/romasm/glue.asm
@@ -127,22 +127,22 @@ edCmd:
 	push	hl \ pop ix
 	ld	l, (ix)
 	ld	h, (ix+1)
-	jp	0x1800
+	jp	0x1900
 
 zasmCmd:
 	.db	"zasm", 0b1001, 0, 0
 	push	hl \ pop ix
 	ld	l, (ix)
 	ld	h, (ix+1)
-	jp	0x1c00
+	jp	0x1d00
 
-; last time I checked, PC at this point was 0x175a. Let's give us a nice margin
+; last time I checked, PC at this point was 0x183c. Let's give us a nice margin
 ; for the start of ed.
-.fill 0x1800-$
+.fill 0x1900-$
 .bin "ed.bin"
 
-; Last check: 0x1b4e
-.fill 0x1c00-$
+; Last check: 0x1c4e
+.fill 0x1d00-$
 .bin "zasm.bin"
 
 .fill 0x7ff0-$
diff --git a/recipes/sms/romasm/user-tmpl.h b/recipes/sms/romasm/user-tmpl.h
index 1f9e8fa..cbcfd20 100644
--- a/recipes/sms/romasm/user-tmpl.h
+++ b/recipes/sms/romasm/user-tmpl.h
@@ -1,6 +1,6 @@
 ; USER_CODE is filled in on-the-fly with either ED_CODE or ZASM_CODE
-.equ    ED_CODE         0x1800
-.equ    ZASM_CODE       0x1c00
+.equ    ED_CODE         0x1900
+.equ    ZASM_CODE       0x1d00
 .equ    USER_RAMSTART   0xc200
 .equ    FS_HANDLE_SIZE  6
 .equ    BLOCKDEV_SIZE   8