@@ -108,7 +108,7 @@ err:

 /* clang-format on */

 int

-uxn_boot(Uxn *u, Stack *wst, Stack *rst, Uint8 *memory)

+uxn_boot(Uxn *u, Uint8 *ram, Uint8 *dev, Stack *wst, Stack *rst)

 {

 	Uint32 i;

 	char *cptr = (char *)u;

@@ -116,7 +116,7 @@ uxn_boot(Uxn *u, Stack *wst, Stack *rst, Uint8 *memory)

 		cptr[i] = 0x00;

 	u->wst = wst;

 	u->rst = rst;

-	u->ram = memory;

+	u->ram = ram;

 	return 1;

 }

@@ -16,6 +16,7 @@ typedef signed short Sint16;

 typedef unsigned int Uint32;

 #define PAGE_PROGRAM 0x0100

+#define PAGE_DEV 0xfd00

 #define PAGE_WST 0xfe00

 #define PAGE_RST 0xff00

@@ -45,7 +46,7 @@ typedef struct Uxn {

 	Device dev[16];

 } Uxn;

-int uxn_boot(Uxn *u, Stack *wst, Stack *rst, Uint8 *memory);

+int uxn_boot(Uxn *u, Uint8 *ram, Uint8 *dev, Stack *wst, Stack *rst);

 int uxn_eval(Uxn *u, Uint16 pc);

 int uxn_halt(Uxn *u, Uint8 error, Uint16 addr);

 Device *uxn_port(Uxn *u, Uint8 id, Uint8 (*deifn)(Device *, Uint8), void (*deofn)(Device *, Uint8));

@@ -143,7 +143,7 @@ main(int argc, char **argv)

 	shadow = (Uint8 *)calloc(0xffff, sizeof(Uint8));

 	memory = (Uint8 *)calloc(0xffff, sizeof(Uint8));

-	if(!uxn_boot(&u, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST), memory))

+	if(!uxn_boot(&u, memory, shadow + PAGE_DEV, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST)))

 		return error("Boot", "Failed");

 	/* system   */ devsystem = uxn_port(&u, 0x0, system_dei, system_deo);

@@ -278,9 +278,9 @@ start(Uxn *u, char *rom)

 	memory = (Uint8 *)calloc(0xffff, sizeof(Uint8));

 	shadow = (Uint8 *)calloc(0xffff, sizeof(Uint8));

-	if(!uxn_boot(&hypervisor, (Stack *)(shadow + 0xfc00), (Stack *)(shadow + 0xfd00), shadow))

+	if(!uxn_boot(&hypervisor, shadow, shadow + PAGE_DEV, (Stack *)(shadow + 0xfb00), (Stack *)(shadow + 0xfc00)))

 		return error("Boot", "Failed to start uxn.");

-	if(!uxn_boot(u, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST), memory))

+	if(!uxn_boot(u, memory, shadow + PAGE_DEV, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST)))

 		return error("Boot", "Failed to start uxn.");

 	if(!load(&hypervisor, "hypervisor.rom"))

 		error("Hypervisor", "No debugger found.");