【正文】 **************。* LED *。*********************。TPC卡設(shè)備ID io_plx_vendor_id equ 010b5h 。TPC卡子設(shè)備及廠商ID TIM_CTL EQU 203H200H 。8253端口數(shù)據(jù) MODE12 EQU 74H INTA00 EQU 20H INTA01 EQU 21H PORTSEG EQU 211H200H 。8255端口 pb55 equ 219h200H p55ctl equ 21bh200Hdata segment csreg dw ? ipreg dw ? 。TPC卡PCI接口芯片I/O基地址暫存空間 io_base_address db 4 DUP(0) 。TPC卡中斷號暫存空間 pcicardnotfind db 0dh,0ah,39。,0dh,0ah,39。 io9054baseaddress db 0dh,0ah,39。,39。 iobaseaddress db 0dh,0ah,39。,39。 intnumber db 0dh,0ah,39。,39。 enter_return db 0dh,0ah,39。 MESS DB 39。,0AH,0DH DB 39。,0AH,0DH,39。 irq_vect db 08h,09h,0ah,0bh,0ch,0dh,0eh,0fh,70h,71h,72h,73h,74h,75h,76h,77h 。新的中斷掩碼,中斷07時從低至高相應(yīng)位為零,中斷815時第2位為零 irq_mask_8_15_table db 0ffh,0ffh,0ffh,0ffh,0ffh,0ffh,0ffh,0ffh db 011111110b,011111101b,011111011b,011110111b db 011101111b,011011111b,010111111b,001111111b 。$39。CDEFBA9845673210 RPMG39。PLAY ANY KEY IN THE SMALL KEYBOARD! 39。IT WILL BE ON THE SCREEN! END WITH R or ANY KEY39。$39。extra data num1 db 6 dup (?) num2 db 6 dup (?) result db 6 dup (?) count db 0 operator db 0 LedNum db 6 dup (?)data endsstacks segment db 100 dup (?)STA DW 512 DUP (?)TOP EQU LENGTH STAstacks endscode segment assume cs:code,ds:data,ss:stacks,es:datastart:。查找TPC卡資源并顯示 MOV DX,word ptr io_base_address 。顯示提示 MOV AH,09 INT 21H mov dx,word ptr io_9054base_address add dx,68h 。保存原中斷向量 mov al,byte ptr [irq_vect+bx] mov ah,35h int 21h mov ax,es mov csreg,ax mov ipreg,bx mov bx,word ptr interrupt_line 。設(shè)置中斷掩碼 mov bx,word ptr interrupt_line mov ah,byte ptr [irq_mask_0_7_table+bx] and al,ah out 21h, al in al, 0a1h mov bx,word ptr interrupt_line mov ah,byte ptr [irq_mask_8_15_table+bx] and al,ah out 0a1h, al sti 。initialization LEA BX,num1 CALL ClearNum LEA BX,num2 CALL ClearNum MOV byte ptr count,0 LEA BX,num1 CALL LedShowFirstRead: LEA BX,num1 CALL ReadNum CMP byte ptr operator,4 JZ Reset CMP byte ptr operator,5 JZ FunExitLoopRead: MOV DL,operator LEA BX,num2 CALL ReadNum CMP byte ptr operator,4 JZ Reset CMP byte ptr operator,5 JZ FunExit CMP DL,1 JZ FunAdd CMP DL,2 JZ FunMinusMidJmp2: JMP FirstReadMidJmp3: JMP Reset。output the error message MOV word ptr num1,0A0AH MOV word ptr num1+2,0A0AH MOV word ptr num1+4,0A0AH LEA BX,num1 call LedShowErrorGet:。only R and E can pass CALL key CMP DL,39。 JZ FunExit CMP DL,39。 JZ MidJmp3 JMP ErrorGetJudge: CMP byte ptr operator,3 JZ MidJmp2Exit: cli mov bx,word ptr interrupt_line 。恢復原中斷向量 mov al,byte ptr [irq_vect+bx] mov dx,ipreg mov cx,csreg mov ds,cx mov ah,25h int 21h mov ax,data 。退出ReadNum proc。you must provide the number address to BX PUSH AX PUSH CX PUSH DXReadin:。get a char in (dl) and display it POP BX MOV AL,DL。plus MOV byte ptr operator,1 CMP AL,39。 JZ ExitRead 。M39。equal MOV byte ptr operator,3 CMP AL,39。 JZ ExitRead。R39。exit MOV byte ptr operator,5 CMP AL,39。 JZ ExitRead。039。939。number CMP byte ptr count,6 JZ ReadinLeftMove:。insert the number AND AL,0FH MOV [BX+5],AL call LedShow INC count