| 0,0 → 1,130 |
|---|
| ; Íîìåð ïðèíèìàåìîãî îò ìûøè áàéòà |
| MouseByteNumber DB 0 |
| ; Òðåõáàéòîâàÿ ñòðóêòóðà äàííûõ, ïåðåäàâàåìàÿ ìûøüþ |
| FirstByte DB 0 |
| SecondByte DB 0 |
| ThirdByte DB 0 |
| timer_ticks_com dd 0 |
| ;*************************************** |
| ;* ÍÎÂÛÉ ÎÁÐÀÁÎÒ×ÈÊ ÏÐÅÐÛÂÀÍÈß ÎÒ ÌÛØÈ * |
| ;*************************************** |
| check_mouse_data_com1: |
| ; cmp [com1_mouse_detected],0 |
| ; je @@EndMouseInterrupt |
| ; Ïðîâåðèòü íàëè÷èå äàííûõ |
| mov DX,3F8h ;[COMPortBaseAddr] |
| add DX,5 ;xFDh |
| in AL,DX |
| test AL,1 ;Äàííûå ãîòîâû? |
| jz @@Error |
| ; Ââåñòè äàííûå |
| mov DX,3F8h ;[COMPortBaseAddr] ;xF8h |
| in AL,DX |
| ; Ñáðîñèòü ñòàðøèé íåçíà÷àùèé áèò |
| and AL,01111111b |
| |
| ; Îïðåäåëèòü ïîðÿäêîâûé íîìåð ïðèíèìàåìîãî áàéòà |
| cmp [MouseByteNumber],0 |
| je @@FirstByte |
| cmp [MouseByteNumber],1 |
| je @@SecondByte |
| cmp [MouseByteNumber],2 |
| je @@ThirdByte |
| jmp @@Error |
| |
| ; Ñîõðàíèòü ïåðâûé áàéò äàííûõ |
| @@FirstByte: |
| test AL,1000000b ;Ïåðâûé áàéò ïîñûëêè? |
| jz @@Error |
| mov [FirstByte],AL |
| inc [MouseByteNumber] ;óâåëè÷èòü ñ÷åò÷èê |
| jmp @@EndMouseInterrupt |
| ; Ñîõðàíèòü âòîðîé áàéò äàííûõ |
| @@SecondByte: |
| test AL,1000000b |
| jnz @@Error |
| mov [SecondByte],AL |
| inc [MouseByteNumber] ;óâåëè÷èòü ñ÷åò÷èê |
| jmp @@EndMouseInterrupt |
| ; Ñîõðàíèòü òðåòèé áàéò äàííûõ |
| @@ThirdByte: |
| test AL,1000000b |
| jnz @@Error |
| mov [ThirdByte],AL ;óâåëè÷èòü ñ÷åò÷èê |
| mov [MouseByteNumber],0 |
| ; (Ïàêåò äàííûõ îò ìûøè ïðèíÿò ïîëíîñòüþ). |
| ; Çàïèñàòü íîâîå çíà÷åíèå ñîñòîÿíèÿ êíîïîê ìûøè |
| mov al,[FirstByte] ;[0xfb01] |
| mov ah,al |
| shr al,3 |
| and al,2 |
| shr ah,5 |
| and ah,1 |
| add al,ah |
| mov [0xfb40],al |
| mov [mouse_active],1 |
| ; Ïðèáàâèòü ïåðåìåùåíèå ïî X ê êîîðäèíàòå X |
| mov AL,[FirstByte] |
| shl AL,6 |
| or AL,[SecondByte] |
| cbw |
| call mouse_acceleration_com1 |
| add AX,[0xFB0A] ;[XCoordinate] |
| ; Êóðñîð íå äîëæåí âûõîäèòü çà ëåâóþ èëè |
| ; ïðàâóþ ãðàíèöó ýêðàíà |
| js @@X1 |
| cmp AX,[0xFE00] ;ScreenLength |
| jb @@X2 |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî ïðàâîé ãðàíèöå |
| mov AX,[0xFE00] ;ScreenLength-1 |
| dec ax |
| jmp @@X2 |
| @@X1: |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî ëåâîé ãðàíèöå |
| xor AX,AX |
| @@X2: |
| mov [0xFB0A],AX ;[XCoordinate] |
| ; Ïðèáàâèòü ïåðåìåùåíèå ïî Y ê êîîðäèíàòå Y |
| mov AL,[FirstByte] |
| and AL,00001100b |
| shl AL,4 |
| or AL,[ThirdByte] |
| cbw |
| call mouse_acceleration_com1 |
| add AX,[0xFB0C] ;[YCoordinate] |
| ; Êóðñîð íå äîëæåí âûõîäèòü çà âåðõíþþ èëè |
| ; íèæíþþ ãðàíèöó ýêðàíà |
| js @@Y1 |
| cmp AX,[0xFE04] ;ScreenHeigth |
| jb @@Y2 |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî íèæíåé ãðàíèöå |
| mov AX,[0xFE04] ;ScreenHeigth-1 |
| dec ax |
| jmp @@Y2 |
| @@Y1: |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî âåðõíåé ãðàíèöå |
| xor AX,AX |
| @@Y2: |
| mov [0xFB0C],AX ;[YCoordinate] |
| mov eax,[timer_ticks] |
| mov [timer_ticks_com],eax |
| jmp @@EndMouseInterrupt |
| |
| @@Error: |
| ; Ïðîèçîøåë ñáîé â ïîðÿäêå ïåðåäà÷è èíôîðìàöèè îò |
| ; ìûøè, îáíóëèòü ñ÷åò÷èê áàéòîâ ïàêåòà äàííûõ |
| mov [MouseByteNumber],0 |
| @@EndMouseInterrupt: |
| call ready_for_next_irq |
| ret |
| |
| mouse_acceleration_com1: |
| push eax |
| mov eax,[timer_ticks] |
| sub eax,[timer_ticks_com] |
| cmp eax,[mouse_delay] |
| pop eax |
| ja @f |
| shl ax,1 |
| @@: |
| ret |