?? chap_9.src

?? 初學51的值得看一下…………里面有很多實例
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			; SOURCE LINE # 457
	MOV  	A,count+01H
	ORL  	A,count
	JZ   	?C0043
; 				{
			; SOURCE LINE # 458
; 					D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
			; SOURCE LINE # 459
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+020H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 					count--;
			; SOURCE LINE # 460
	MOV  	A,count+01H
	DEC  	count+01H
	JNZ  	?C0220
	DEC  	count
?C0220:
; 					Descriptor_Ptr++;
			; SOURCE LINE # 461
	INC  	Descriptor_Ptr+01H
	MOV  	A,Descriptor_Ptr+01H
	JNZ  	?C0221
	INC  	Descriptor_Ptr
?C0221:
; 				}
			; SOURCE LINE # 462
	SJMP 	?C0042
?C0043:
; 				//選擇高速還是全速端點1IN描述符
; 				if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
			; SOURCE LINE # 464
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JNB  	ACC.0,?C0044
; 					Descriptor_Ptr = &Int_In_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 465
	MOV  	R6,#HIGH (Int_In_Descriptor)
	MOV  	R7,#LOW (Int_In_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0044:
; 				if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
			; SOURCE LINE # 466
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JB   	ACC.0,?C0045
; 					Descriptor_Ptr = &HS_Int_In_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 467
	MOV  	R6,#HIGH (HS_Int_In_Descriptor)
	MOV  	R7,#LOW (HS_Int_In_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0045:
; 				count = *Descriptor_Ptr;	//read in descriptor length
			; SOURCE LINE # 468
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	R6,#00H
	MOV  	count,R6
	MOV  	count+01H,R7
?C0046:
; 				//寫入端點1IN描述符
; 				while(count != 0)
			; SOURCE LINE # 470
	MOV  	A,count+01H
	ORL  	A,count
	JZ   	?C0047
; 				{
			; SOURCE LINE # 471
; 					D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
			; SOURCE LINE # 472
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+020H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 					count--;
			; SOURCE LINE # 473
	MOV  	A,count+01H
	DEC  	count+01H
	JNZ  	?C0222
	DEC  	count
?C0222:
; 					Descriptor_Ptr++;
			; SOURCE LINE # 474
	INC  	Descriptor_Ptr+01H
	MOV  	A,Descriptor_Ptr+01H
	JNZ  	?C0223
	INC  	Descriptor_Ptr
?C0223:
; 				}
			; SOURCE LINE # 475
	SJMP 	?C0046
?C0047:
; 				//選擇高速還是全速端點1OUT描述符
; 				if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
			; SOURCE LINE # 477
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JNB  	ACC.0,?C0048
; 					Descriptor_Ptr = &Int_Out_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 478
	MOV  	R6,#HIGH (Int_Out_Descriptor)
	MOV  	R7,#LOW (Int_Out_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0048:
; 				if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
			; SOURCE LINE # 479
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JB   	ACC.0,?C0049
; 					Descriptor_Ptr = &HS_Int_Out_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 480
	MOV  	R6,#HIGH (HS_Int_Out_Descriptor)
	MOV  	R7,#LOW (HS_Int_Out_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0049:
; 				count = *Descriptor_Ptr;	//read in descriptor length
			; SOURCE LINE # 481
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	R6,#00H
	MOV  	count,R6
	MOV  	count+01H,R7
?C0050:
; 				//寫入端點1OUT描述符
; 				while(count != 0)
			; SOURCE LINE # 483
	MOV  	A,count+01H
	ORL  	A,count
	JZ   	?C0051
; 				{
			; SOURCE LINE # 484
; 					D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
			; SOURCE LINE # 485
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+020H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 					count--;
			; SOURCE LINE # 486
	MOV  	A,count+01H
	DEC  	count+01H
	JNZ  	?C0224
	DEC  	count
?C0224:
; 					Descriptor_Ptr++;
			; SOURCE LINE # 487
	INC  	Descriptor_Ptr+01H
	MOV  	A,Descriptor_Ptr+01H
	JNZ  	?C0225
	INC  	Descriptor_Ptr
?C0225:
; 				}
			; SOURCE LINE # 488
	SJMP 	?C0050
?C0051:
; 				//選擇高速還是全速端點2IN描述符
; 				if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
			; SOURCE LINE # 490
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JNB  	ACC.0,?C0052
; 					Descriptor_Ptr = &Bulk_In_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 491
	MOV  	R6,#HIGH (Bulk_In_Descriptor)
	MOV  	R7,#LOW (Bulk_In_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0052:
; 				if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
			; SOURCE LINE # 492
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JB   	ACC.0,?C0053
; 					Descriptor_Ptr = &HS_Bulk_In_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 493
	MOV  	R6,#HIGH (HS_Bulk_In_Descriptor)
	MOV  	R7,#LOW (HS_Bulk_In_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0053:
; 				count = *Descriptor_Ptr;	//read in descriptor length
			; SOURCE LINE # 494
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	R6,#00H
	MOV  	count,R6
	MOV  	count+01H,R7
?C0054:
; 				//寫入端點2IN描述符
; 				while(count != 0)
			; SOURCE LINE # 496
	MOV  	A,count+01H
	ORL  	A,count
	JZ   	?C0055
; 				{
			; SOURCE LINE # 497
; 					D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
			; SOURCE LINE # 498
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+020H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 					count--;
			; SOURCE LINE # 499
	MOV  	A,count+01H
	DEC  	count+01H
	JNZ  	?C0226
	DEC  	count
?C0226:
; 					Descriptor_Ptr++;
			; SOURCE LINE # 500
	INC  	Descriptor_Ptr+01H
	MOV  	A,Descriptor_Ptr+01H
	JNZ  	?C0227
	INC  	Descriptor_Ptr
?C0227:
; 				}
			; SOURCE LINE # 501
	SJMP 	?C0054
?C0055:
; 				//選擇高速還是全速端點2OUT描述符
; 				if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
			; SOURCE LINE # 503
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JNB  	ACC.0,?C0056
; 					Descriptor_Ptr = &Bulk_Out_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 504
	MOV  	R6,#HIGH (Bulk_Out_Descriptor)
	MOV  	R7,#LOW (Bulk_Out_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0056:
; 				if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
			; SOURCE LINE # 505
	MOV  	R7,Kernel_Flag+03H
	MOV  	A,R7
	JB   	ACC.0,?C0057
; 					Descriptor_Ptr = &HS_Bulk_Out_Descriptor[0]; //set pointer to interface descriptor
			; SOURCE LINE # 506
	MOV  	R6,#HIGH (HS_Bulk_Out_Descriptor)
	MOV  	R7,#LOW (HS_Bulk_Out_Descriptor)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
?C0057:
; 				count = *Descriptor_Ptr;	//read in descriptor length
			; SOURCE LINE # 507
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	R6,#00H
	MOV  	count,R6
	MOV  	count+01H,R7
?C0058:
; 				//寫入端點2OUT描述符
; 				while(count != 0)
			; SOURCE LINE # 509
	MOV  	A,count+01H
	ORL  	A,count
	JZ   	?C0037
; 				{
			; SOURCE LINE # 510
; 					D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
			; SOURCE LINE # 511
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+020H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 					count--;
			; SOURCE LINE # 512
	MOV  	A,count+01H
	DEC  	count+01H
	JNZ  	?C0228
	DEC  	count
?C0228:
; 					Descriptor_Ptr++;
			; SOURCE LINE # 513
	INC  	Descriptor_Ptr+01H
	MOV  	A,Descriptor_Ptr+01H
	JNZ  	?C0229
	INC  	Descriptor_Ptr
?C0229:
; 				}
			; SOURCE LINE # 514
	SJMP 	?C0058
; 			}
			; SOURCE LINE # 515
?C0037:
; 			//使端點有效
; 			D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.VENDP = 1;	//validate FIFO
			; SOURCE LINE # 517
	MOV  	DPTR,#D14_Cntrl_Reg+028H
	MOVX 	A,@DPTR
	MOV  	R7,A
	MOV  	A,R7
	ORL  	A,#08H
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+028H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 			wait_ep0tx();
			; SOURCE LINE # 518
	LCALL	wait_ep0tx
; 			ep0out_ack();
			; SOURCE LINE # 519
	LCALL	ep0out_ack
; 		}
			; SOURCE LINE # 520
; 		break;
			; SOURCE LINE # 521
	RET  	
; 		
; 		case  3:  //獲取字符串描述符
			; SOURCE LINE # 523
?C0060:
; 			Descriptor_Ptr = &Standard_String_ID[0];		//set pointer to interface descriptor
			; SOURCE LINE # 524
	MOV  	R6,#HIGH (Standard_String_ID)
	MOV  	R7,#LOW (Standard_String_ID)
	MOV  	Descriptor_Ptr,R6
	MOV  	Descriptor_Ptr+01H,R7
; 			count = *Descriptor_Ptr;		//get length
			; SOURCE LINE # 525
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	R6,#00H
	MOV  	count,R6
	MOV  	count+01H,R7
; 			D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
			; SOURCE LINE # 526
	MOV  	DPTR,#D14_Cntrl_Reg+02CH
	MOV  	A,#01H
	MOVX 	@DPTR,A
; 			if(USB_Device_Request.wLength < count)
			; SOURCE LINE # 527
	MOV  	R0,#LOW (USB_Device_Request+06H)
	MOV  	A,@R0
	MOV  	R6,A
	INC  	R0
	MOV  	A,@R0
	MOV  	R7,A
	CLR  	C
	MOV  	A,R7
	SUBB 	A,count+01H
	MOV  	A,R6
	SUBB 	A,count
	JNC  	?C0061
; 				count = USB_Device_Request.wLength;			//get the remaining length
			; SOURCE LINE # 528
	MOV  	R0,#LOW (USB_Device_Request+06H)
	MOV  	A,@R0
	MOV  	count,A
	INC  	R0
	MOV  	A,@R0
	MOV  	count+01H,A
?C0061:
; 			D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = count;
			; SOURCE LINE # 529
	MOV  	R7,count+01H
	MOV  	DPTR,#D14_Cntrl_Reg+01CH
	MOV  	A,R7
	MOVX 	@DPTR,A
; 			D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
			; SOURCE LINE # 530
	MOV  	DPTR,#D14_Cntrl_Reg+01DH
	CLR  	A
	MOVX 	@DPTR,A
?C0062:
; 			//send string ID
; 			while(count != 0)
			; SOURCE LINE # 532
	MOV  	A,count+01H
	ORL  	A,count
	JZ   	?C0063
; 			{
			; SOURCE LINE # 533
; 				D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;	//fill up FIFO
			; SOURCE LINE # 534
	MOV  	R6,Descriptor_Ptr
	MOV  	R7,Descriptor_Ptr+01H
	MOV  	DPL,R7
	MOV  	DPH,R6
	CLR  	A
	MOVC 	A,@A+DPTR
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+020H
	MOV  	A,R7
	MOVX 	@DPTR,A
; 				Descriptor_Ptr++;
			; SOURCE LINE # 535
	INC  	Descriptor_Ptr+01H
	MOV  	A,Descriptor_Ptr+01H
	JNZ  	?C0230
	INC  	Descriptor_Ptr
?C0230:
; 				count--;
			; SOURCE LINE # 536
	MOV  	A,count+01H
	DEC  	count+01H
	JNZ  	?C0231
	DEC  	count
?C0231:
; 			}
			; SOURCE LINE # 537
	SJMP 	?C0062
?C0063:
; 			wait_ep0tx();
			; SOURCE LINE # 538
	LCALL	wait_ep0tx
; 			ep0out_ack();
			; SOURCE LINE # 539
	LCALL	ep0out_ack
; 			break;
			; SOURCE LINE # 540
	RET  	
; 			
; 			
; 		case  4:  
			; SOURCE LINE # 543
?C0064:
; 			reserved();
			; SOURCE LINE # 544
	LCALL	reserved
; 			break;
			; SOURCE LINE # 545
	RET  	
; 			
; 		case  5:  //獲取端點描述符
			; SOURCE LINE # 547
?C0065:
; 			Temp = 0;
			; SOURCE LINE # 548
	MOV  	Temp,#00H
	MOV  	Temp+01H,#00H
; 			if((USB_Device_Request.wValue & 0x00ff) > 0x0001)
			; SOURCE LINE # 549
	MOV  	R0,#LOW (USB_Device_Request+02H)
	MOV  	A,@R0
	MOV  	R6,A
	INC  	R0
	MOV  	A,@R0
	MOV  	R7,A
	MOV  	R6,#00H
	SETB 	C
	MOV  	A,R7
	SUBB 	A,#01H
	MOV  	A,R6
	SUBB 	A,#00H
	JC   	?C0066
; 			{
			; SOURCE LINE # 550
; 				D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
			; SOURCE LINE # 551
	MOV  	DPTR,#D14_Cntrl_Reg+028H
	MOVX 	A,@DPTR
	MOV  	R7,A
	MOV  	A,R7
	ORL  	A,#01H
	MOV  	R7,A
	MOV  	DPTR,#D14_Cntrl_Reg+028H
	MOV  	A,R7
	MOVX 	@DPTR,A
?C0067:
; 				while(!USB_Int_Flag.BITS.EP0SETUP)
			; SOURCE LINE # 552
	MOV  	R7,USB_Int_Flag+01H
	MOV  	A,R7
	JB   	ACC.0,?C0068
; 				{
			; SOURCE LINE # 553
; 					//讀取ISP1581中斷寄存器
; 					USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
			; SOURCE LINE # 555
	MOV  	DPTR,#D14_Cntrl_Reg+018H
	MOVX 	A,@DPTR
	MOV  	R4,A
	INC  	DPTR
	MOVX 	A,@DPTR
	MOV  	R5,A
	INC  	DPTR
	MOVX 	A,@DPTR
	MOV  	R6,A
	INC  	DPTR
	MOVX 	A,@DPTR
	MOV  	R7,A
	MOV  	A,USB_Int_Flag+03H
	ORL  	A,R7
	MOV  	USB_Int_Flag+03H,A
	MOV  	A,USB_Int_Flag+02H
	ORL  	A,R6
	MOV  	USB_Int_Flag+02H,A
	MOV  	A,USB_Int_Flag+01H
	ORL  	A,R5
	MOV  	USB_Int_Flag+01H,A
	MOV  	A,USB_Int_Flag
	ORL  	A,R4
	MOV  	USB_Int_Flag,A
; 					//回寫ISP1581中斷寄存器
; 					D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;
			; SOURCE LINE # 557
	MOV  	R7,USB_Int_Flag+03H
	MOV  	R6,USB_Int_Flag+02H
	MOV  	R5,USB_Int_Flag+01H
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