@@ -118,7 +118,6 @@ A device that works like a NES controller, each button is a bit from a single by

 - Includes

 - Defines

-- Print unused labels

 ## Refs

@@ -17,17 +17,17 @@ typedef unsigned short Uint16;

 typedef signed short Sint16;

 typedef struct {

-	int ptr;

-	Uint8 data[65536];

+	Uint8 data[256 * 256];

+	Uint16 ptr;

 } Program;

 typedef struct {

+	Uint8 len, length[16], size, refs;

 	char name[64], params[16][64];

-	Uint8 len, length[16], size;

 } Macro;

 typedef struct {

-	Uint8 len, offset;

+	Uint8 len, offset, refs;

 	Uint16 addr;

 	char name[64];

 	Macro *macro;

@@ -222,6 +222,7 @@ makelabel(char *name, Uint16 addr, Uint8 len, Macro *m)

 	l = &labels[labelslen++];

 	l->addr = addr;

 	l->len = len;

+	l->refs = 0;

 	scpy(name, l->name, 64);

 	if(m)

 		l->macro = m;

@@ -246,9 +247,10 @@ makevariable(char *id, Uint16 *addr, FILE *f)

 	Macro *m = NULL;

 	fscanf(f, "%s", wv);

 	origin = *addr;

-	if((m = findmacro(wv)))

+	if((m = findmacro(wv))) {

 		len = m->size;

-	else

+		m->refs++;

+	} else

 		len = shex(wv);

 	*addr += len;

 	return makelabel(id, origin, len, m);

@@ -349,17 +351,29 @@ pass2(FILE *f)

 		else if(w[0] == '+' && sihx(w + 1) && slen(w + 1) == 4) pushshort((Sint16)shex(w + 1), 1);

 		else if(w[0] == '-' && sihx(w + 1) && slen(w + 1) == 2) pushbyte((Sint8)(shex(w + 1) * -1), 1);

 		else if(w[0] == '-' && sihx(w + 1) && slen(w + 1) == 4) pushshort((Sint16)(shex(w + 1) * -1), 1);

-		else if(w[0] == '=' && (l = findlabel(w + 1)) && l->len){ pushshort(findlabeladdr(w+1), 1); pushbyte(findopcode(findlabellen(w+1) == 2 ? "STR2" : "STR"), 0); }

-		else if(w[0] == '~' && (l = findlabel(w + 1)) && l->len){ pushshort(findlabeladdr(w+1), 1); pushbyte(findopcode(findlabellen(w+1) == 2 ? "LDR2" : "LDR"), 0); }

+		else if(w[0] == '=' && (l = findlabel(w + 1)) && l->len){ pushshort(findlabeladdr(w+1), 1); pushbyte(findopcode(findlabellen(w+1) == 2 ? "STR2" : "STR"), 0); l->refs++;}

+		else if(w[0] == '~' && (l = findlabel(w + 1)) && l->len){ pushshort(findlabeladdr(w+1), 1); pushbyte(findopcode(findlabellen(w+1) == 2 ? "LDR2" : "LDR"), 0); l->refs++;}

 		else if(w[0] == '=' && sihx(w + 1)) { pushshort(shex(w + 1), 1); pushbyte(findopcode("STR2"), 0); }

 		else if(w[0] == '~' && sihx(w + 1)) { pushshort(shex(w + 1), 1); pushbyte(findopcode("LDR2"), 0); }

-		else if((l = findlabel(w + 1))) pushshort(findlabeladdr(w+1), w[0] == ',');

+		else if((l = findlabel(w + 1))) { pushshort(findlabeladdr(w+1), w[0] == ','); l->refs++; }

 		else return error("Unknown label in second pass", w);

 		/* clang-format on */

 	}

 	return 1;

 }

+void

+cleanup(void)

+{

+	int i;

+	for(i = 0; i < labelslen; ++i)

+		if(!labels[i].refs)

+			printf("--- Unused label: %s\n", labels[i].name);

+	for(i = 0; i < macroslen; ++i)

+		if(!macros[i].refs)

+			printf("--- Unused macro: %s\n", macros[i].name);

+}

+

 int

 main(int argc, char *argv[])

 {

@@ -373,5 +387,6 @@ main(int argc, char *argv[])

 	fwrite(p.data, sizeof(p.data), 1, fopen(argv[2], "wb"));

 	fclose(f);

 	printf("Assembled %s.\n\n", argv[2]);

+	cleanup();

 	return 0;

 }

@@ -20,5 +20,5 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr

 # cc uxn.c emulator.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -Wno-unknown-pragmas -L/usr/local/lib -lSDL2 -o bin/emulator

 # run

-./bin/assembler examples/gui.hover.usm bin/boot.rom

+./bin/assembler examples/dev.mouse.usm bin/boot.rom

 ./bin/emulator bin/boot.rom

@@ -10,7 +10,6 @@

 ;label Label2d

 ;cat Point2d 

 ;mouse Point2d

-;pos Point2d

 ;color 1

 ;timer 1

@@ -106,9 +105,7 @@ RTS

 	@animate-polycat-tail-next2

 	( look-at )

 	~mouse.x ~cat.x #0008 ADD2 GTH2 ,animate-polycat-right ROT JMP? POP2

-	@animate-polycat-left

 		~mouse.y ~cat.y #0008 ADD2 GTH2 ,animate-polycat-left-down ROT JMP? POP2

-		@animate-polycat-left-up 

 			,polycat #0040 ADD2 ~cat.x ~cat.y #0008 ADD2 ,draw-sprite-chr JSR

 			,polycat #0050 ADD2 ~cat.x #0008 ADD2 ~cat.y #0008 ADD2 ,draw-sprite-chr JSR

 		RTS

@@ -118,7 +115,6 @@ RTS

 		RTS

 	@animate-polycat-right

 		~mouse.y ~cat.y #0008 ADD2 GTH2 ,animate-polycat-right-down ROT JMP? POP2

-		@animate-polycat-right-up 

 			,polycat #0060 ADD2 ~cat.x ~cat.y #0008 ADD2 ,draw-sprite-chr JSR

 			,polycat #0070 ADD2 ~cat.x #0008 ADD2 ~cat.y #0008 ADD2 ,draw-sprite-chr JSR

 		RTS

@@ -217,9 +213,6 @@ RTS

 	0008 0808 0808 0800 0030 1008 0810 3000 0000 0032 4c00 0000 3c42 99a1 a199 423c

 ]

-@chord0_text   [ no chord ] <1 .00

-@chord1_text   [ chord 1_ ] <1 .00

-@chord2_text   [ chord _2 ] <1 .00

 @mouse0_text   [ no click ] <1 .00

 @mouse1_text   [ mouse 1_ ] <1 .00

 @mouse2_text   [ mouse _2 ] <1 .00

@@ -4,8 +4,6 @@

 &Sprite { pad 8 x 2 y 2 addr 2 color 1 }

 &Mouse  { x 2 y 2 state 1 chord 1 }

-&Label2d { x 2 y 2 color 1 addr 2 }

-&Picture2d { x 2 y 2 width 2 height 2 color 1 addr 2 }

 &Rect2d { x1 2 y1 2 x2 2 y2 2 }

 &Point2d { x 2 y 2 }

@@ -95,11 +93,9 @@ RTS

 RTS

 @clear_icn   [ 0000 0000 0000 0000 ]

-@pointer_icn  [ 80c0 e0f0 f8e0 1000 ]

+@pointer_icn [ 80c0 e0f0 f8e0 1000 ]

 @hand_icn    [ 4040 4070 f8f8 f870 ]

-@text [ Label Text ] <1 .00 ( add characters to memory )

-

 |d000 @ERROR BRK 

 |FF10 ;dev/screen Screen

@@ -4,7 +4,6 @@

 &Sprite { pad 8 x 2 y 2 addr 2 color 1 }

 &Picture2d { x 2 y 2 width 2 height 2 color 1 addr 2 }

-&Point2d { x 2 y 2 }

 ;pict Picture2d

@@ -6,13 +6,12 @@

 &Label2d { x 2 y 2 color 1 addr 2 }

 &Picture2d { x 2 y 2 width 2 height 2 color 1 addr 2 }

 &Rect2d { x1 2 y1 2 x2 2 y2 2 }

-&Point2d { x 2 y 2 }

 ;label Label2d

 ;pict Picture2d

 ;rect Rect2d

-;color 1 ;x1 2 ;x2 2 ;y1 2 ;y2 2

+;color 1

 |0100 @RESET