| 0,0 → 1,118 |
|---|
| ; Íîìåð ïðèíèìàåìîãî îò ìûøè áàéòà |
| MouseByteNumber_1 DB 0 |
| ; Òðåõáàéòîâàÿ ñòðóêòóðà äàííûõ, ïåðåäàâàåìàÿ ìûøüþ |
| FirstByte_1 DB 0 |
| SecondByte_1 DB 0 |
| ThirdByte_1 DB 0 |
| |
| ;*************************************** |
| ;* ÍÎÂÛÉ ÎÁÐÀÁÎÒ×ÈÊ ÏÐÅÐÛÂÀÍÈß ÎÒ ÌÛØÈ * |
| ;*************************************** |
| check_mouse_data_com2: |
| cmp [com2_mouse_detected],0 |
| je @@EndMouseInterrupt_1 |
| ; Ïðîâåðèòü íàëè÷èå äàííûõ |
| mov DX,2F8h ;[COMPortBaseAddr] |
| add DX,5 ;xFDh |
| in AL,DX |
| test AL,1 ;Äàííûå ãîòîâû? |
| jz @@Error_1 |
| ; Ââåñòè äàííûå |
| mov DX,2F8h ;[COMPortBaseAddr] ;xF8h |
| in AL,DX |
| ; Ñáðîñèòü ñòàðøèé íåçíà÷àùèé áèò |
| and AL,01111111b |
| |
| ; Îïðåäåëèòü ïîðÿäêîâûé íîìåð ïðèíèìàåìîãî áàéòà |
| cmp [MouseByteNumber_1],0 |
| je @@FirstByte_1 |
| cmp [MouseByteNumber_1],1 |
| je @@SecondByte_1 |
| cmp [MouseByteNumber_1],2 |
| je @@ThirdByte_1 |
| jmp @@Error_1 |
| |
| ; Ñîõðàíèòü ïåðâûé áàéò äàííûõ |
| @@FirstByte_1: |
| test AL,1000000b ;Ïåðâûé áàéò ïîñûëêè? |
| jz @@Error_1 |
| mov [FirstByte_1],AL |
| inc [MouseByteNumber_1] ;óâåëè÷èòü ñ÷åò÷èê |
| jmp @@EndMouseInterrupt_1 |
| ; Ñîõðàíèòü âòîðîé áàéò äàííûõ |
| @@SecondByte_1: |
| test AL,1000000b |
| jnz @@Error_1 |
| mov [SecondByte_1],AL |
| inc [MouseByteNumber_1] ;óâåëè÷èòü ñ÷åò÷èê |
| jmp @@EndMouseInterrupt_1 |
| ; Ñîõðàíèòü òðåòèé áàéò äàííûõ |
| @@ThirdByte_1: |
| test AL,1000000b |
| jnz @@Error_1 |
| mov [ThirdByte_1],AL ;óâåëè÷èòü ñ÷åò÷èê |
| mov [MouseByteNumber_1],0 |
| ; (Ïàêåò äàííûõ îò ìûøè ïðèíÿò ïîëíîñòüþ). |
| ; Çàïèñàòü íîâîå çíà÷åíèå ñîñòîÿíèÿ êíîïîê ìûøè |
| mov al,[FirstByte_1] ;[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_1] |
| shl AL,6 |
| or AL,[SecondByte_1] |
| cbw |
| shl ax,1 |
| add AX,[0xFB0A] ;[XCoordinate] |
| ; Êóðñîð íå äîëæåí âûõîäèòü çà ëåâóþ èëè |
| ; ïðàâóþ ãðàíèöó ýêðàíà |
| js @@X1_1 |
| cmp AX,[0xFE00] ;ScreenLength |
| jb @@X2_1 |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî ïðàâîé ãðàíèöå |
| mov AX,[0xFE00] ;ScreenLength-1 |
| dec ax |
| jmp @@X2_1 |
| @@X1_1: |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî ëåâîé ãðàíèöå |
| xor AX,AX |
| @@X2_1: |
| mov [0xFB0A],AX ;[XCoordinate] |
| ; Ïðèáàâèòü ïåðåìåùåíèå ïî Y ê êîîðäèíàòå Y |
| mov AL,[FirstByte_1] |
| and AL,00001100b |
| shl AL,4 |
| or AL,[ThirdByte_1] |
| cbw |
| shl ax,1 |
| add AX,[0xFB0C] ;[YCoordinate] |
| ; Êóðñîð íå äîëæåí âûõîäèòü çà âåðõíþþ èëè |
| ; íèæíþþ ãðàíèöó ýêðàíà |
| js @@Y1_1 |
| cmp AX,[0xFE04] ;ScreenHeigth |
| jb @@Y2_1 |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî íèæíåé ãðàíèöå |
| mov AX,[0xFE04] ;ScreenHeigth-1 |
| dec ax |
| jmp @@Y2_1 |
| @@Y1_1: |
| ; Óñòàíîâèòü êîîðäèíàòó X ïî âåðõíåé ãðàíèöå |
| xor AX,AX |
| @@Y2_1: |
| mov [0xFB0C],AX ;[YCoordinate] |
| jmp @@EndMouseInterrupt_1 |
| |
| @@Error_1: |
| ; Ïðîèçîøåë ñáîé â ïîðÿäêå ïåðåäà÷è èíôîðìàöèè îò |
| ; ìûøè, îáíóëèòü ñ÷åò÷èê áàéòîâ ïàêåòà äàííûõ |
| mov [MouseByteNumber_1],0 |
| @@EndMouseInterrupt_1: |
| call ready_for_next_irq |
| ret |
| |