@@ -64,15 +64,20 @@ system_inspect(Uxn *u)

 }

 void

-system_connect(Uint8 device, Uint8 ver, Uint16 dei, Uint16 deo)

+system_connect(Uxn *u, Uint8 device, Uint8 ver, Uint16 dei, Uint16 deo)

 {

+	int i, d = (device << 0x4);

+	for(i = 0; i < 0x10; i++) {

+		u->dei_masks[d + i] = (dei >> i) & 0x1;

+		u->deo_masks[d + i] = (deo >> i) & 0x1;

+	}

 	dev_vers[device] = ver;

 	dei_mask[device] = dei;

 	deo_mask[device] = deo;

 }

 int

-system_version(char *name, char *date)

+system_version(Uxn *u, char *name, char *date)

 {

 	int i;

 	printf("%s, %s.\n", name, date);

@@ -17,10 +17,10 @@ WITH REGARD TO THIS SOFTWARE.

 extern char *boot_rom;

-void system_connect(Uint8 device, Uint8 ver, Uint16 dei, Uint16 deo);

+void system_connect(Uxn *u, Uint8 device, Uint8 ver, Uint16 dei, Uint16 deo);

 void system_reboot(Uxn *u, char *rom, int soft);

 void system_inspect(Uxn *u);

-int system_version(char *emulator, char *date);

+int system_version(Uxn *u, char *emulator, char *date);

 int system_error(char *msg, const char *err);

 int system_init(Uxn *u, Uint8 *ram, char *rom);

@@ -11,10 +11,10 @@ WITH REGARD TO THIS SOFTWARE.

 /* clang-format off */

-#define POKE2(d, v) { (d)[0] = (v) >> 8; (d)[1] = (v); }

-#define PEEK2(d) ((d)[0] << 8 | (d)[1])

-#define DEO(p, v) { u->dev[p] = v; if((deo_mask[p >> 4] >> (p & 0xf)) & 0x1) emu_deo(u, p); }

-#define DEI(p) ((dei_mask[(p) >> 4] >> ((p) & 0xf)) & 0x1 ? emu_dei(u, (p)) : u->dev[(p)])

+#define POKE2(d, v) { *(d) = (v) >> 8; (d)[1] = (v); }

+#define PEEK2(d) (*(d) << 8 | (d)[1])

+#define DEI(p) (u->dei_masks[p] ? emu_dei(u, (p)) : u->dev[(p)])

+#define DEO(p, v) { u->dev[p] = v; if(u->deo_masks[p]) emu_deo(u, p); }

 /* clang-format on */

@@ -27,14 +27,12 @@ typedef signed short Sint16;

 typedef unsigned int Uint32;

 typedef struct {

-	Uint8 dat[255], ptr;

+	Uint8 dat[0x100], ptr;

 } Stack;

 typedef struct Uxn {

-	Uint8 *ram, dev[256];

+	Uint8 *ram, dev[0x100], dei_masks[0x100], deo_masks[0x100];

 	Stack wst, rst;

-	Uint8 (*dei)(struct Uxn *u, Uint8 addr);

-	void (*deo)(struct Uxn *u, Uint8 addr);

 } Uxn;

 /* required functions */

@@ -66,14 +66,14 @@ main(int argc, char **argv)

 	if(i == argc)

 		return system_error("usage", "uxncli [-v] file.rom [args..]");

 	/* Connect Varvara */

-	system_connect(0x0, SYSTEM_VERSION, SYSTEM_DEIMASK, SYSTEM_DEOMASK);

-	system_connect(0x1, CONSOLE_VERSION, CONSOLE_DEIMASK, CONSOLE_DEOMASK);

-	system_connect(0xa, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

-	system_connect(0xb, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

-	system_connect(0xc, DATETIME_VERSION, DATETIME_DEIMASK, DATETIME_DEOMASK);

+	system_connect(&u, 0x0, SYSTEM_VERSION, SYSTEM_DEIMASK, SYSTEM_DEOMASK);

+	system_connect(&u, 0x1, CONSOLE_VERSION, CONSOLE_DEIMASK, CONSOLE_DEOMASK);

+	system_connect(&u, 0xa, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

+	system_connect(&u, 0xb, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

+	system_connect(&u, 0xc, DATETIME_VERSION, DATETIME_DEIMASK, DATETIME_DEOMASK);

 	/* Read flags */

 	if(argv[i][0] == '-' && argv[i][1] == 'v')

-		return system_version("Uxncli - Console Varvara Emulator", "15 Aug 2023");

+		return system_version(&u, "Uxncli - Console Varvara Emulator", "17 Aug 2023");

 	if(!system_init(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++]))

 		return system_error("Init", "Failed to initialize uxn.");

 	/* Game Loop */

@@ -502,21 +502,21 @@ main(int argc, char **argv)

 	if(i == argc)

 		return system_error("usage", "uxnemu [-v][-2x][-3x] file.rom [args...]");

 	/* Connect Varvara */

-	system_connect(0x0, SYSTEM_VERSION, SYSTEM_DEIMASK, SYSTEM_DEOMASK);

-	system_connect(0x1, CONSOLE_VERSION, CONSOLE_DEIMASK, CONSOLE_DEOMASK);

-	system_connect(0x2, SCREEN_VERSION, SCREEN_DEIMASK, SCREEN_DEOMASK);

-	system_connect(0x3, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

-	system_connect(0x4, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

-	system_connect(0x5, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

-	system_connect(0x6, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

-	system_connect(0x8, CONTROL_VERSION, CONTROL_DEIMASK, CONTROL_DEOMASK);

-	system_connect(0x9, MOUSE_VERSION, MOUSE_DEIMASK, MOUSE_DEOMASK);

-	system_connect(0xa, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

-	system_connect(0xb, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

-	system_connect(0xc, DATETIME_VERSION, DATETIME_DEIMASK, DATETIME_DEOMASK);

+	system_connect(&u, 0x0, SYSTEM_VERSION, SYSTEM_DEIMASK, SYSTEM_DEOMASK);

+	system_connect(&u, 0x1, CONSOLE_VERSION, CONSOLE_DEIMASK, CONSOLE_DEOMASK);

+	system_connect(&u, 0x2, SCREEN_VERSION, SCREEN_DEIMASK, SCREEN_DEOMASK);

+	system_connect(&u, 0x3, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

+	system_connect(&u, 0x4, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

+	system_connect(&u, 0x5, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

+	system_connect(&u, 0x6, AUDIO_VERSION, AUDIO_DEIMASK, AUDIO_DEOMASK);

+	system_connect(&u, 0x8, CONTROL_VERSION, CONTROL_DEIMASK, CONTROL_DEOMASK);

+	system_connect(&u, 0x9, MOUSE_VERSION, MOUSE_DEIMASK, MOUSE_DEOMASK);

+	system_connect(&u, 0xa, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

+	system_connect(&u, 0xb, FILE_VERSION, FILE_DEIMASK, FILE_DEOMASK);

+	system_connect(&u, 0xc, DATETIME_VERSION, DATETIME_DEIMASK, DATETIME_DEOMASK);

 	/* Read flags */

 	if(argv[i][0] == '-' && argv[i][1] == 'v')

-		return system_version("Uxnemu - Graphical Varvara Emulator", "15 Aug 2023");

+		return system_version(&u, "Uxnemu - Graphical Varvara Emulator", "17 Aug 2023");

 	if(strcmp(argv[i], "-2x") == 0 || strcmp(argv[i], "-3x") == 0)

 		set_zoom(argv[i++][1] - '0', 0);

 	if(!emu_init())