@@ -31,7 +31,7 @@ Build the assembler and emulator by running the `build.sh` script. The assembler

 If you wish to build the emulator without graphics mode:

 ```sh

-cc src/devices/datetime.c src/devices/system.c src/devices/file.c src/uxn.c -DNDEBUG -Os -g0 -s src/uxncli.c -o bin/uxncli

+cc src/devices/datetime.c src/devices/system.c src/devices/file.c src/uxn-fast.c -DNDEBUG -Os -g0 -s src/uxncli.c -o bin/uxncli

 ```

 ### Plan 9 

@@ -34,15 +34,15 @@ WITH REGARD TO THIS SOFTWARE.

 #define PUT2(o, v) { tmp = (v); s->dat[s->ptr - o - 2] = tmp >> 8; s->dat[s->ptr - o - 1] = tmp; }

 #define PUSH(stack, v) { if(s->ptr > 254) HALT(2) stack->dat[stack->ptr++] = (v); }

 #define PUSH2(stack, v) { if(s->ptr > 253) HALT(2) tmp = (v); stack->dat[stack->ptr] = (v) >> 8; stack->dat[stack->ptr + 1] = (v); stack->ptr += 2; }

-#define SEND(a, b) { u->dev[a] = b; if((send_events[(a) >> 4] >> ((a) & 0xf)) & 0x1) u->deo(u, a); }

-#define LISTEN(a, b) { PUT(a, ((receive_events[(b) >> 4] >> ((b) & 0xf)) & 0x1) ? u->dei(u, b) : u->dev[b])  }

+#define DEO(a, b) { u->dev[a] = b; if((deo_masks[(a) >> 4] >> ((a) & 0xf)) & 0x1) uxn_deo(u, a); }

+#define DEI(a, b) { PUT(a, ((dei_masks[(b) >> 4] >> ((b) & 0xf)) & 0x1) ? uxn_dei(u, b) : u->dev[b])  }

 static 

-Uint16 send_events[] = {

+Uint16 deo_masks[] = {

 	0x6a08, 0x0300, 0xc028, 0x8000, 0x8000, 0x8000, 0x8000, 0x0000,

 	0x0000, 0x0000, 0xa260, 0xa260, 0x0000, 0x0000, 0x0000, 0x0000 };

 static

-Uint16 receive_events[] = {

+Uint16 dei_masks[] = {

 	0x0000, 0x0000, 0x0014, 0x0014, 0x0014, 0x0014, 0x0014, 0x0000,

 	0x0000, 0x0000, 0x0000, 0x0000, 0x07fd, 0x0000, 0x0000, 0x0000 };

@@ -111,10 +111,10 @@ uxn_eval(Uxn *u, Uint16 pc)

 			case 0x14: /* LDA  */ t=T2;           INC(2,-1) PUT(0, u->ram[t]) break;

 			case 0x35: /* STA2 */ t=T2;n=N2;      DEC(4, 0) POKE16(u->ram + t, n) break;

 			case 0x15: /* STA  */ t=T2;n=L;       DEC(3, 0) u->ram[t] = n; break;

-			case 0x36: /* DEI2 */ t=T;            INC(1, 1) LISTEN(1, t) LISTEN(0, t + 1) break;

-			case 0x16: /* DEI  */ t=T;            INC(1, 0) LISTEN(0, t) break;

-			case 0x37: /* DEO2 */ t=T;n=N;l=L;    DEC(3, 0) SEND(t, l) SEND(t + 1, n) break;

-			case 0x17: /* DEO  */ t=T;n=N;        DEC(2, 0) SEND(t, n) break;

+			case 0x36: /* DEI2 */ t=T;            INC(1, 1) DEI(1, t) DEI(0, t + 1) break;

+			case 0x16: /* DEI  */ t=T;            INC(1, 0) DEI(0, t) break;

+			case 0x37: /* DEO2 */ t=T;n=N;l=L;    DEC(3, 0) DEO(t, l) DEO(t + 1, n) break;

+			case 0x17: /* DEO  */ t=T;n=N;        DEC(2, 0) DEO(t, n) break;

 			case 0x38: /* ADD2 */ t=T2;n=N2;      INC(4,-2) PUT2(0, n + t) break;

 			case 0x18: /* ADD  */ t=T;n=N;        INC(2,-1) PUT(0, n + t) break;

 			case 0x39: /* SUB2 */ t=T2;n=N2;      INC(4,-2) PUT2(0, n - t) break;

@@ -136,7 +136,7 @@ uxn_eval(Uxn *u, Uint16 pc)

 }

 int

-uxn_boot(Uxn *u, Uint8 *ram, Dei *dei, Deo *deo)

+uxn_boot(Uxn *u, Uint8 *ram)

 {

 	Uint32 i;

 	char *cptr = (char *)u;

@@ -146,7 +146,5 @@ uxn_boot(Uxn *u, Uint8 *ram, Dei *dei, Deo *deo)

 	u->rst = (Stack *)(ram + 0xf0100);

 	u->dev = (Uint8 *)(ram + 0xf0200);

 	u->ram = ram;

-	u->dei = dei;

-	u->deo = deo;

 	return 1;

 }

@@ -35,9 +35,13 @@ typedef struct Uxn {

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

 } Uxn;

-typedef Uint8 Dei(Uxn *u, Uint8 addr);

-typedef void Deo(Uxn *u, Uint8 addr);

+/* required functions */

-int uxn_halt(Uxn *u, Uint8 instr, Uint8 err, Uint16 addr);

-int uxn_boot(Uxn *u, Uint8 *ram, Dei *dei, Deo *deo);

-int uxn_eval(Uxn *u, Uint16 pc);

\ No newline at end of file

+extern Uint8 uxn_dei(Uxn *u, Uint8 addr);

+extern void uxn_deo(Uxn *u, Uint8 addr);

+extern int uxn_halt(Uxn *u, Uint8 instr, Uint8 err, Uint16 addr);

+

+/* built-ins */

+

+int uxn_boot(Uxn *u, Uint8 *ram);

+int uxn_eval(Uxn *u, Uint16 pc);

@@ -47,8 +47,8 @@ console_deo(Uint8 *d, Uint8 port)

 	}

 }

-static Uint8

-emu_dei(Uxn *u, Uint8 addr)

+Uint8

+uxn_dei(Uxn *u, Uint8 addr)

 {

 	switch(addr & 0xf0) {

 	case 0xc0: return datetime_dei(u, addr);

@@ -56,8 +56,8 @@ emu_dei(Uxn *u, Uint8 addr)

 	return u->dev[addr];

 }

-static void

-emu_deo(Uxn *u, Uint8 addr)

+void

+uxn_deo(Uxn *u, Uint8 addr)

 {

 	Uint8 p = addr & 0x0f, d = addr & 0xf0;

 	switch(d) {

@@ -75,7 +75,7 @@ main(int argc, char **argv)

 	int i;

 	if(argc < 2)

 		return emu_error("Usage", "uxncli game.rom args");

-	if(!uxn_boot(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), emu_dei, emu_deo))

+	if(!uxn_boot(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8))))

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

 	if(!system_load(&u, argv[1]))

 		return emu_error("Load", "Failed");

@@ -108,8 +108,8 @@ audio_deo(int instance, Uint8 *d, Uint8 port, Uxn *u)

 	}

 }

-static Uint8

-emu_dei(Uxn *u, Uint8 addr)

+Uint8

+uxn_dei(Uxn *u, Uint8 addr)

 {

 	Uint8 p = addr & 0x0f, d = addr & 0xf0;

 	switch(d) {

@@ -123,8 +123,8 @@ emu_dei(Uxn *u, Uint8 addr)

 	return u->dev[addr];

 }

-static void

-emu_deo(Uxn *u, Uint8 addr)

+void

+uxn_deo(Uxn *u, Uint8 addr)

 {

 	Uint8 p = addr & 0x0f, d = addr & 0xf0;

 	switch(d) {

@@ -263,7 +263,7 @@ static int

 start(Uxn *u, char *rom)

 {

 	free(u->ram);

-	if(!uxn_boot(u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), emu_dei, emu_deo))

+	if(!uxn_boot(u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8))))

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

 	if(!system_load(u, rom))

 		return error("Boot", "Failed to load rom.");