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三星NAND型FLASH数据纠错模块设计

L3: CMP

JNZ

CMP JZ D1 CMP JZ D1 CMP JZ D0

BX,0 BX,2 BX,4 FLAG,0 D4

CMP AX,0FDFDH ;按键9

JZ BUFF9

AX,0FDFEH ;按键8

CMP

JZ BUFF8

AX,0FE7FH ;按键7

CMP

JZ BUFF7 CMP

AX,0FEBFH ;按键6

JZ BUFF6

AX,0FEDFH ;按键5

D1: CMP

JZ BUFF5 CMP

AX,0FEEFH ;按键4

JZ BUFF4 CMP

AX,0FEF7H ;按键3

JZ BUFF3

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三星NAND型FLASH数据纠错模块设计

D0: CMP

AX,0FEFBH ;按键2

JZ BUFF2 CMP

AX,0FEFDH ;按键1

JZ BUFF1

AX,0FEFEH ;按键0

CMP

JZ BUFF0

AX,0FD7FH ;按键F

CMP

JZ BUFFF

AX,0FDFBH ;按键A

D4: CMP

JZ BUFFA CMP

AX,0FDF7H ;按键B

JZ BUFFB JMP

OUTPUT

BUFFER[BX],9

BUFF9: MOV

JMP

OUTPUT

BUFFER[BX],8

BUFF8: MOV

JMP

OUTPUT

BUFFER[BX],7

BUFF7: MOV

JMP

OUTPUT BUFFER[BX],6 OUTPUT

BUFFER[BX],5

BUFF6: MOV

JMP

BUFF5: MOV

JMP

OUTPUT

BUFFER[BX],4

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BUFF4: MOV

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三星NAND型FLASH数据纠错模块设计

JMP OUTPUT BUFFER[BX],3 OUTPUT

BUFFER[BX],2

BUFF3: MOV

JMP

BUFF2: MOV

JMP

OUTPUT

BUFFER[BX],1

BUFF1: MOV

JMP

OUTPUT BUFFER[BX],0 OUTPUT

BUFF0: MOV

JMP

BUFFA: MOV

JMP

FLAG,1 OUTPUT

FLAG,0

BUFFB: MOV

JMP

OUTPUT

BUFFF: CMP BUF[0],1

JNZ A7 MOV DL,BUF[1] MOV BL,KEY MOV BUFFER[BX],DL MOV BUF[0],0

DELAY1 BL,0

A7: CALL

CMP

JZ L5

BL,KEY

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A8: MOV

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三星NAND型FLASH数据纠错模块设计

CMP BX,5 JNZ L5 MOV BX,0 JMP

L6 L5: INC BL L6: MOV KEY,BL

OUTPUT: POP DX

POP CX POP BX POP AX

RET

KEYSCAN ENDP

SET_VECTOR PROC NEAR

PUSH AX PUSH BX MOV

AX,0

MOV ES,AX ; MOV BX,40H*4 ;BX MOV AX,OFFSET INTRPROC ; MOV ES:[BX],AX MOV AX,SEG INTRPROC

MOV ES:[BX+2],AX ;

POP

BX

中断向量表段基址为0000H

中预置中断向量地止,中断类型号为40H 向量表中低地址存放偏移地址, 向量表中高地址存放段基地址 页脚内容

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三星NAND型FLASH数据纠错模块设计

POP AX

RET

SET_VECTOR ENDP

INIT_8259 PROC NEAR

PUSH AX PUSH

DX

MOV AL,13H ;ICW1: MOV DX,EVEN_8259 OUT DX,AL

MOV AL,40H ;ICW2: MOV

DX,ODD_8259

OUT DX,AL MOV AL,01H ;ICW4: MOV DX,ODD_8259 OUT DX,AL

POP DX POP AX

RET

INIT_8259 ENDP

INTRPROC PROC FAR

PUSH AX

PUSH BX ;

PUSH

DS

边沿触发,单片系统,需要ICW4 类型号从40H开始 完全嵌套方式,非缓冲,非自动结束保护现场 页脚内容

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