⭐ 欢迎来到虫虫下载站! | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站

📄 d51_new.src

📁 基于ARM编的9850,可以实现多种波形的输出与变换
💻 SRC
📖 第 1 页 / 共 3 页
字号:
	RSEG  ?PR?delay_dds?D51_NEW
delay_dds:
	USING	0
			; SOURCE LINE # 220
; {
			; SOURCE LINE # 221
; 	uchar i,j;
; 	for(i=0;i<1;i++){
			; SOURCE LINE # 223
;---- Variable 'i?2069' assigned to Register 'R7' ----
	CLR  	A
	MOV  	R7,A
?C0085:
; 		j=i;
			; SOURCE LINE # 224
	MOV  	j?2070,R7
; 	}
			; SOURCE LINE # 225
	INC  	R7
	CJNE 	R7,#01H,?C0085
; }
			; SOURCE LINE # 226
?C0088:
	RET  	
; END OF delay_dds

; void init_dds(void)

	RSEG  ?PR?init_dds?D51_NEW
init_dds:
	USING	0
			; SOURCE LINE # 227
; {
			; SOURCE LINE # 228
; 	uchar i;
; 		WCLK_pin=0;
			; SOURCE LINE # 230
	CLR  	P1_1
; 		FQ_UD_pin=0;
			; SOURCE LINE # 231
	CLR  	P1_2
; 	delay_dds();
			; SOURCE LINE # 232
	LCALL	delay_dds
; 	delay_dds();
			; SOURCE LINE # 233
	LCALL	delay_dds
; 		WCLK_pin=1;
			; SOURCE LINE # 234
	SETB 	P1_1
; 	delay_dds();
			; SOURCE LINE # 235
	LCALL	delay_dds
; 		WCLK_pin=0;
			; SOURCE LINE # 236
	CLR  	P1_1
; 	delay_dds();
			; SOURCE LINE # 237
	LCALL	delay_dds
; 		FQ_UD_pin=1;
			; SOURCE LINE # 238
	SETB 	P1_2
; 	delay_dds();
			; SOURCE LINE # 239
	LCALL	delay_dds
; 		FQ_UD_pin=0;
			; SOURCE LINE # 240
	CLR  	P1_2
; 	delay_dds();
			; SOURCE LINE # 241
	LCALL	delay_dds
; 
; 	for(i=0;i<8;i++){
			; SOURCE LINE # 243
;---- Variable 'i?2171' assigned to Register 'R6' ----
	CLR  	A
	MOV  	R6,A
?C0089:
; 
; 		DATA_pin=0;
			; SOURCE LINE # 245
	CLR  	P1_3
; 			
; 		delay_dds();
			; SOURCE LINE # 247
	LCALL	delay_dds
; 			WCLK_pin=1;
			; SOURCE LINE # 248
	SETB 	P1_1
; 		delay_dds();
			; SOURCE LINE # 249
	LCALL	delay_dds
; 			WCLK_pin=0;
			; SOURCE LINE # 250
	CLR  	P1_1
; 	}
			; SOURCE LINE # 251
	INC  	R6
	CJNE 	R6,#08H,?C0089
?C0090:
; 	delay_dds();
			; SOURCE LINE # 252
	LCALL	delay_dds
; 		FQ_UD_pin=1;
			; SOURCE LINE # 253
	SETB 	P1_2
; 	delay_dds();
			; SOURCE LINE # 254
	LCALL	delay_dds
; 		FQ_UD_pin=0;
			; SOURCE LINE # 255
	CLR  	P1_2
; 
; }
			; SOURCE LINE # 257
	RET  	
; END OF init_dds

; void update_freq(unsigned long f,uchar c)

	RSEG  ?PR?_update_freq?D51_NEW
L?0138:
	MOV  	freq?2378,A
	MOV  	R7,freq?2378+03H
	MOV  	R6,freq?2378+02H
	MOV  	R5,freq?2378+01H
	MOV  	R4,A
	MOV  	?_update_freq?BYTE+04H,ctrl1?2381
_update_freq:
	USING	0
;---- Variable 'f?2272' assigned to Register 'R4/R5/R6/R7' ----
			; SOURCE LINE # 258
; {
			; SOURCE LINE # 259
; 	uchar i,cs;
; 	unsigned long freq_temp;
; 	freq_temp=f;
			; SOURCE LINE # 262
	MOV  	freq_temp?2276+03H,R7
	MOV  	freq_temp?2276+02H,R6
	MOV  	freq_temp?2276+01H,R5
	MOV  	freq_temp?2276,R4
; 	cs=c;
			; SOURCE LINE # 263
;---- Variable 'cs?2275' assigned to Register 'R3' ----
	MOV  	R3,c?2273
; 	for(i=0;i<32;i++){
			; SOURCE LINE # 264
;---- Variable 'i?2274' assigned to Register 'R2' ----
	CLR  	A
	MOV  	R2,A
?C0093:
; 		if(freq_temp & 1)
			; SOURCE LINE # 265
	MOV  	A,freq_temp?2276+03H
	ANL  	A,#01H
	MOV  	R7,A
	CLR  	A
	MOV  	R6,A
	MOV  	R5,A
	MOV  	R4,A
	MOV  	A,R7
	JZ   	?C0096
; 			DATA_pin=1;
			; SOURCE LINE # 266
	SETB 	P1_3
	SJMP 	?C0097
?C0096:
; 		else
; 			DATA_pin=0;
			; SOURCE LINE # 268
	CLR  	P1_3
?C0097:
; 			
; 	delay_dds();
			; SOURCE LINE # 270
	LCALL	delay_dds
; 		WCLK_pin=1;
			; SOURCE LINE # 271
	SETB 	P1_1
; 	delay_dds();
			; SOURCE LINE # 272
	LCALL	delay_dds
; 		WCLK_pin=0;
			; SOURCE LINE # 273
	CLR  	P1_1
; 		freq_temp>>=1;
			; SOURCE LINE # 274
	MOV  	R7,freq_temp?2276+03H
	MOV  	R6,freq_temp?2276+02H
	MOV  	R5,freq_temp?2276+01H
	MOV  	R4,freq_temp?2276
	MOV  	R0,#01H
	LCALL	?C?ULSHR
	MOV  	freq_temp?2276+03H,R7
	MOV  	freq_temp?2276+02H,R6
	MOV  	freq_temp?2276+01H,R5
	MOV  	freq_temp?2276,R4
; 		
; 	}
			; SOURCE LINE # 276
	INC  	R2
	CJNE 	R2,#020H,?C0093
?C0094:
; 	for(i=0;i<8;i++){
			; SOURCE LINE # 277
	CLR  	A
	MOV  	R2,A
?C0098:
; 		if(cs & 1)
			; SOURCE LINE # 278
	MOV  	A,R3
	JNB  	ACC.0,?C0101
; 			DATA_pin=1;
			; SOURCE LINE # 279
	SETB 	P1_3
	SJMP 	?C0102
?C0101:
; 		else
; 			DATA_pin=0;
			; SOURCE LINE # 281
	CLR  	P1_3
?C0102:
; 			
; 	delay_dds();
			; SOURCE LINE # 283
	LCALL	delay_dds
; 		WCLK_pin=1;
			; SOURCE LINE # 284
	SETB 	P1_1
; 	delay_dds();
			; SOURCE LINE # 285
	LCALL	delay_dds
; 		WCLK_pin=0;
			; SOURCE LINE # 286
	CLR  	P1_1
; 		cs>>=1;
			; SOURCE LINE # 287
	MOV  	A,R3
	CLR  	C
	RRC  	A
	MOV  	R3,A
; 	}
			; SOURCE LINE # 288
	INC  	R2
	CJNE 	R2,#08H,?C0098
?C0099:
; 	delay_dds();
			; SOURCE LINE # 289
	LCALL	delay_dds
; 		FQ_UD_pin=1;
			; SOURCE LINE # 290
	SETB 	P1_2
; 	delay_dds();
			; SOURCE LINE # 291
	LCALL	delay_dds
; 		FQ_UD_pin=0;
			; SOURCE LINE # 292
	CLR  	P1_2
; 
; }
			; SOURCE LINE # 294
	RET  	
; END OF _update_freq

; void main (void){  /* main program */

	RSEG  ?PR?main?D51_NEW
main:
	USING	0
			; SOURCE LINE # 295
; 	unsigned int adr;
; 	unsigned long freq,dfreq,temp_f;
; 	uchar ctrl1;
; //	int temp,i;
; 	uchar	status;
; //	char	out_char[5];
; 	EA=0;			 /* 0=Disable all interrupts */
			; SOURCE LINE # 302
	CLR  	EA
; 	P1=0xff;
			; SOURCE LINE # 303
	MOV  	P1,#0FFH
;  	LED_DATA=0xff;	//off all LEDs
			; SOURCE LINE # 304
	MOV  	DPTR,#0E000H
	MOV  	A,#0FFH
	MOVX 	@DPTR,A
;  	freq=1000<<10;
			; SOURCE LINE # 305
	MOV  	freq?2378+03H,#00H
	MOV  	freq?2378+02H,#0A0H
	MOV  	freq?2378+01H,A
	MOV  	freq?2378,A
;  	dfreq=1000<<10;
			; SOURCE LINE # 306
	MOV  	dfreq?2379+03H,#00H
	MOV  	dfreq?2379+02H,#0A0H
	MOV  	dfreq?2379+01H,A
	MOV  	dfreq?2379,A
;  	temp_f=0;
			; SOURCE LINE # 307
	CLR  	A
	MOV  	temp_f?2380+03H,A
	MOV  	temp_f?2380+02H,A
	MOV  	temp_f?2380+01H,A
	MOV  	temp_f?2380,A
;  	ctrl1=0x00;
			; SOURCE LINE # 308
	MOV  	ctrl1?2381,A
;  	DATA_pin=0;
			; SOURCE LINE # 309
	CLR  	P1_3
;  	WCLK_pin=0;
			; SOURCE LINE # 310
	CLR  	P1_1
;  	FQ_UD_pin=0;
			; SOURCE LINE # 311
	CLR  	P1_2
;  	
; 	delay(10);
			; SOURCE LINE # 313
	MOV  	R7,#0AH
	LCALL	_delay
;   	init8279();
			; SOURCE LINE # 314
	LCALL	init8279
; //	clearDispBuf();
; 	DispHELLO();
			; SOURCE LINE # 316
	LCALL	DispHELLO
; 	adr=chkram();
			; SOURCE LINE # 317
	LCALL	chkram
;---- Variable 'adr?2377' assigned to Register 'R6/R7' ----
; 	encode(adr);
			; SOURCE LINE # 318
	LCALL	_encode
; 	Display();
			; SOURCE LINE # 319
	LCALL	Display
; //	adr=chkram();
; 	status=0;
			; SOURCE LINE # 321
	CLR  	A
	MOV  	status?2382,A
; //	NumberC=defaultN;
; 	EA=1;
			; SOURCE LINE # 323
	SETB 	EA
; 	EX0=1;
			; SOURCE LINE # 324
	SETB 	EX0
; 	EX1=0;
			; SOURCE LINE # 325
	CLR  	EX1
; 	ES=0;
			; SOURCE LINE # 326
	CLR  	ES
; 	ET0=0;
			; SOURCE LINE # 327
	CLR  	ET0
; 	ET1=0;
			; SOURCE LINE # 328
	CLR  	ET1
; 	TMOD=C_T1 |	M0_1 | 	M0_0; 		//0x51;			/* timer1 16位计数器   timer0 16位定时器    */
			; SOURCE LINE # 329
	MOV  	TMOD,#051H
; 	TH1=-NumberC/256;
			; SOURCE LINE # 330
	CLR  	C
	SUBB 	A,NumberC+01H
	MOV  	R5,A
	CLR  	A
	SUBB 	A,NumberC
	MOV  	TH1,A
; 	TL1=-NumberC%256;				/* timer1 计数  NumberC 中断    timer0定时   */
			; SOURCE LINE # 331
	MOV  	R7,AR5
	MOV  	TL1,R7
; 	TH0=0;
			; SOURCE LINE # 332
	CLR  	A
	MOV  	TH0,A
; 	TL0=0;
			; SOURCE LINE # 333
	MOV  	TL0,A
; 	THG0=0;
			; SOURCE LINE # 334
	MOV  	THG0,A
; 	TSET=0;
			; SOURCE LINE # 335
	MOV  	TSET,A
; 	ET0=1;
			; SOURCE LINE # 336
	SETB 	ET0
; 	ET1=1;
			; SOURCE LINE # 337
	SETB 	ET1
; 	TR0=1;
			; SOURCE LINE # 338
	SETB 	TR0
; 	TR1=1;
			; SOURCE LINE # 339
	SETB 	TR1
; 	init_dds();		
			; SOURCE LINE # 340
	LCALL	init_dds
; 	delay(10);
			; SOURCE LINE # 341
	MOV  	R7,#0AH
	LCALL	_delay
; 	LED_DATA=0xfc;		//on 2 LEDs
			; SOURCE LINE # 342
	MOV  	DPTR,#0E000H
	MOV  	A,#0FCH
	MOVX 	@DPTR,A
;  /*	for(;;){		//test delay();
; 		delay(10);
; 		P1_0=0;
; 		delay(10);
; 		P1_0=1;
; 	}*/
; 	update_freq(freq,ctrl1);
			; SOURCE LINE # 349
	MOV  	R7,freq?2378+03H
	MOV  	R6,freq?2378+02H
	MOV  	R5,freq?2378+01H
	MOV  	R4,freq?2378
	MOV  	?_update_freq?BYTE+04H,ctrl1?2381
	LCALL	_update_freq
;  	status=0;
			; SOURCE LINE # 350
	CLR  	A
	MOV  	status?2382,A
?C0104:
;  //	while (1)  {                                 /* repeat forever */
;  //		}
;  	while (1)  {                                 /* repeat forever */
			; SOURCE LINE # 353
;   		if(LED_status==1){
			; SOURCE LINE # 354
	MOV  	A,LED_status
	CJNE 	A,#01H,?C0106
;   			LED_status=0;
			; SOURCE LINE # 355
	CLR  	A
	MOV  	LED_status,A
; 			DisplayLED();
			; SOURCE LINE # 356
	LCALL	DisplayLED
;   			}
			; SOURCE LINE # 357
?C0106:
; 			
; 		
; 		if(keyNum==1){
			; SOURCE LINE # 360
	MOV  	A,keyNum
	CJNE 	A,#01H,?C0104
; 			
; 			switch(keyChar)
			; SOURCE LINE # 362
	MOV  	A,keyChar
	LCALL	?C?CCASE
	DW   	?C0124
	DB   	023H
	DW   	?C0123
	DB   	02AH
	DW   	?C0122
	DB   	030H
	DW   	?C0122
	DB   	031H
	DW   	?C0122
	DB   	032H
	DW   	?C0122
	DB   	033H
	DW   	?C0122
	DB   	034H
	DW   	?C0122
	DB   	035H
	DW   	?C0122
	DB   	036H
	DW   	?C0122
	DB   	037H
	DW   	?C0122
	DB   	038H
	DW   	?C0122
	DB   	039H
	DW   	?C0109
	DB   	041H
	DW   	?C0110
	DB   	042H
	DW   	?C0111
	DB   	043H
	DW   	?C0112
	DB   	044H
	DW   	00H
	DW   	?C0108
; 			{
			; SOURCE LINE # 363
; 				case	'A'	:     /*  F1  */
			; SOURCE LINE # 364
?C0109:
; 					freq=temp_f<<10;
			; SOURCE LINE # 365
	MOV  	R7,temp_f?2380+03H
	MOV  	R6,temp_f?2380+02H
	MOV  	R5,temp_f?2380+01H
	MOV  	R4,temp_f?2380
	MOV  	R0,#0AH
	LCALL	?C?LSHL
	MOV  	freq?2378+03H,R7
	MOV  	freq?2378+02H,R6
	MOV  	freq?2378+01H,R5
	MOV  	freq?2378,R4
; 					update_freq(freq,ctrl1);
			; SOURCE LINE # 366
	MOV  	?_update_freq?BYTE+04H,ctrl1?2381
	LCALL	_update_freq
; 					temp_f=0;
			; SOURCE LINE # 367
	CLR  	A
	MOV  	temp_f?2380+03H,A
	MOV  	temp_f?2380+02H,A
	MOV  	temp_f?2380+01H,A
	MOV  	temp_f?2380,A
; 					clearDispBuf();
			; SOURCE LINE # 368
; 					encode6(freq);
			; SOURCE LINE # 369
	LCALL	L?0136
; 					Display();
			; SOURCE LINE # 370
	LCALL	Display
; 					status=0;
			; SOURCE LINE # 371
	CLR  	A
	MOV  	status?2382,A
; 					break; 
			; SOURCE LINE # 372
	LJMP 	?C0108
; 				case	'B'	:      /*  F2  */
			; SOURCE LINE # 373
?C0110:
; 					dfreq=temp_f<<10;
			; SOURCE LINE # 374
	MOV  	R7,temp_f?2380+03H
	MOV  	R6,temp_f?2380+02H
	MOV  	R5,temp_f?2380+01H
	MOV  	R4,temp_f?2380
	MOV  	R0,#0AH
	LCALL	?C?LSHL
	MOV  	dfreq?2379+03H,R7
	MOV  	dfreq?2379+02H,R6
	MOV  	dfreq?2379+01H,R5
	MOV  	dfreq?2379,R4
; 					temp_f=0;
			; SOURCE LINE # 375
; 					clearDispBuf();
			; SOURCE LINE # 376
	LCALL	L?0139
; 					encode6(dfreq);
			; SOURCE LINE # 377
	MOV  	R7,dfreq?2379+03H
	MOV  	R6,dfreq?2379+02H
	MOV  	R5,dfreq?2379+01H
	MOV  	R4,dfreq?2379
	LCALL	_encode6
; 					Display();
			; SOURCE LINE # 378
	LCALL	Display
; 					status=0;
			; SOURCE LINE # 379
	CLR  	A
	MOV  	status?2382,A
; 					break;
			; SOURCE LINE # 380
	LJMP 	?C0108
; 				case	'C'	:      /*  F3  */
			; SOURCE LINE # 381
?C0111:
;  					freq+=dfreq;
			; SOURCE LINE # 382
	MOV  	A,freq?2378+03H
	ADD  	A,dfreq?2379+03H
	MOV  	freq?2378+03H,A
	MOV  	A,freq?2378+02H
	ADDC 	A,dfreq?2379+02H
	MOV  	freq?2378+02H,A
	MOV  	A,freq?2378+01H
	ADDC 	A,dfreq?2379+01H
	MOV  	freq?2378+01H,A
	MOV  	A,freq?2378
	ADDC 	A,dfreq?2379
; 					update_freq(freq,ctrl1);
			; SOURCE LINE # 383
	LCALL	L?0138
; 					clearDispBuf();
			; SOURCE LINE # 384
; 					encode6(freq);
			; SOURCE LINE # 385
	LCALL	L?0136
; 					Display();				/* */
			; SOURCE LINE # 386
	LCALL	Display
; 					status=0;
			; SOURCE LINE # 387
	CLR  	A
	MOV  	status?2382,A
; 					break;
			; SOURCE LINE # 388
	LJMP 	?C0108
; 				case	'D'	:      /*  F4  */
			; SOURCE LINE # 389
?C0112:
;  					freq-=dfreq;
			; SOURCE LINE # 390
	CLR  	C
	MOV  	A,freq?2378+03H
	SUBB 	A,dfreq?2379+03H
	MOV  	freq?2378+03H,A
	MOV  	A,freq?2378+02H
	SUBB 	A,dfreq?2379+02H
	MOV  	freq?2378+02H,A
	MOV  	A,freq?2378+01H
	SUBB 	A,dfreq?2379+01H
	MOV  	freq?2378+01H,A
	MOV  	A,freq?2378
	SUBB 	A,dfreq?2379
; 					update_freq(freq,ctrl1);
			; SOURCE LINE # 391
	LCALL	L?0138
; 					clearDispBuf();
			; SOURCE LINE # 392
; 					encode6(freq);
			; SOURCE LINE # 393
	LCALL	L?0136
; 					Display();				/* */
			; SOURCE LINE # 394
	LCALL	Display
; 					status=1;
			; SOURCE LINE # 395
	MOV  	status?2382,#01H
; 					break;
			; SOURCE LINE # 396
	SJMP 	?C0108
; 				case	'1'	: 
			; SOURCE LINE # 397
; 				case	'2'	: 
			; SOURCE LINE # 398
; 				case	'3'	: 
			; SOURCE LINE # 399
; 				case	'4'	: 
			; SOURCE LINE # 400
; 				case	'5'	: 
			; SOURCE LINE # 401
; 				case	'6'	: 
			; SOURCE LINE # 402
; 				case	'7'	: 
			; SOURCE LINE # 403
; 				case	'8'	: 
			; SOURCE LINE # 404
; 				case	'9'	: 
			; SOURCE LINE # 405
; 				case	'0'	: 
			; SOURCE LINE # 406
?C0122:
; /*					if((key_num==0) && ((status & 0x80)!=0)){
; 						clearDispBuf();
; 						Display();
; 						key_num=0;
; 					}
; 					if((status & 0x80)!=0){
; 						if(key_num<5){
; 							DisplayChar(LedTab[keyChar-0x30]);
; 							out_char[key_num]=keyChar;
; 							key_num++;
; 						}
; 					}*/
; 					temp_f=10*temp_f;
			; SOURCE LINE # 419
	MOV  	R7,temp_f?2380+03H
	MOV  	R6,temp_f?2380+02H
	MOV  	R5,temp_f?2380+01H
	MOV  	R4,temp_f?2380
	CLR  	A
	MOV  	R3,#0AH
	MOV  	R2,A
	MOV  	R1,A
	MOV  	R0,A
	LCALL	?C?LMUL
	MOV  	temp_f?2380+03H,R7
	MOV  	temp_f?2380+02H,R6
	MOV  	temp_f?2380+01H,R5
	MOV  	temp_f?2380,R4
; 					temp_f+=keyChar&0x0f;
			; SOURCE LINE # 420
	MOV  	A,keyChar
	ANL  	A,#0FH
	MOV  	R7,A
	CLR  	A
	MOV  	R4,A
	MOV  	R5,A
	MOV  	R6,A
	MOV  	A,temp_f?2380+03H
	ADD  	A,R7
	MOV  	temp_f?2380+03H,A
	MOV  	A,R6
	ADDC 	A,temp_f?2380+02H
	MOV  	temp_f?2380+02H,A
	MOV  	A,R5
	ADDC 	A,temp_f?2380+01H
	MOV  	temp_f?2380+01H,A
	MOV  	A,R4
	ADDC 	A,temp_f?2380
	MOV  	temp_f?2380,A
; 					encode5(keyChar);
			; SOURCE LINE # 421
	MOV  	R7,keyChar
	LCALL	_encode5
; 					Display();				/* */
			; SOURCE LINE # 422
	LCALL	Display
; 					status=0;
			; SOURCE LINE # 423
	CLR  	A
	MOV  	status?2382,A
; 					break;
			; SOURCE LINE # 424
	SJMP 	?C0108
; 
; 
; 
; 				case	'*'	: 
			; SOURCE LINE # 428
?C0123:
; 					temp_f=0;
			; SOURCE LINE # 429
; 					clearDispBuf();
			; SOURCE LINE # 430
	LCALL	L?0139
; 					Display();
			; SOURCE LINE # 431
	LCALL	Display
; 					break;
			; SOURCE LINE # 432
	SJMP 	?C0108
; 				case	'#'	: 
			; SOURCE LINE # 433
?C0124:
; 					encode6(freq);
			; SOURCE LINE # 434
	LCALL	L?0137
; 					Display();				/* */
			; SOURCE LINE # 435
	LCALL	Display
; 					status=0;
			; SOURCE LINE # 436
	CLR  	A
	MOV  	status?2382,A
; /*					if(status==1){
; 						adr=chkram();
; 						encode(adr);
; 						Display();
; 						status=0;
; 					}
; 					else{
; 						encode5(keyChar);
; 						DispBuf[7]=LedTab[keyChar-'#'+16];	//#(0x23) --> 16 P  *(0x2a) --> 23 -
; 						Display();				
; 					} */
; 					break;
			; SOURCE LINE # 448
; 				default	:
			; SOURCE LINE # 449
; 					;
; 			}
			; SOURCE LINE # 451
?C0108:
; 			keyNum=0;
			; SOURCE LINE # 452
	CLR  	A
	MOV  	keyNum,A
; 		}
			; SOURCE LINE # 453
; 	}            /* loop forever */
			; SOURCE LINE # 454
	LJMP 	?C0104
; }
			; SOURCE LINE # 455
; END OF main

	END

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -