diff --git a/src/uxn.c b/src/uxn.c
index 0843579..78d0fbf 100644
--- a/src/uxn.c
+++ b/src/uxn.c
@@ -125,6 +125,9 @@ uxn_boot(Uxn *u, Uint8 *ram, Dei *dei, Deo *deo)
 	for(i = 0; i < sizeof(*u); i++)
 		cptr[i] = 0x00;
 	u->ram = ram;
+	u->dev = (Uint8 *)(ram + 0x10200);
+	u->dei = dei;
+	u->deo = deo;
 	return 1;
 }
 
diff --git a/src/uxn.h b/src/uxn.h
index ab9d7bd..d12ca54 100644
--- a/src/uxn.h
+++ b/src/uxn.h
@@ -46,7 +46,7 @@ typedef struct Device {
 } Device;
 
 typedef struct Uxn {
-	Uint8 *ram;
+	Uint8 *ram, *dev;
 	Stack wst, rst;
 	Device devold[16];
 	Uint8 (*dei)(struct Uxn *u, Uint8 addr);
diff --git a/src/uxncli.c b/src/uxncli.c
index 5cd2889..ab65530 100644
--- a/src/uxncli.c
+++ b/src/uxncli.c
@@ -94,7 +94,7 @@ uxn_interrupt(void)
 static int
 start(Uxn *u)
 {
-	if(!uxn_boot(u, (Uint8 *)calloc(0x10000, sizeof(Uint8)), emu_dei, emu_deo))
+	if(!uxn_boot(u, (Uint8 *)calloc(0x10300, sizeof(Uint8)), emu_dei, emu_deo))
 		return error("Boot", "Failed");
 	/* system   */ uxn_port(u, 0x0, system_dei, system_deo);
 	/* console  */ uxn_port(u, 0x1, nil_dei, console_deo);
diff --git a/src/uxnemu.c b/src/uxnemu.c
index 7834879..a94dd64 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -264,7 +264,7 @@ static int
 start(Uxn *u, char *rom)
 {
 	free(u->ram);
-	if(!uxn_boot(u, calloc(0x10000, 1), emu_dei, emu_deo))
+	if(!uxn_boot(u, calloc(0x10300, 1), emu_dei, emu_deo))
 		return error("Boot", "Failed to start uxn.");
 	if(!load(u, rom))
 		return error("Boot", "Failed to load rom.");