| 0,0 → 1,121 |
|---|
| ;************************************************** |
| ;* ÏÎÈÑÊ ÌÛØÈ ÏÎ ÏÎÑËÅÄÎÂÀÒÅËÜÍÛÌ ÏÎÐÒÀÌ * |
| ;* Ïðîöåäóðà ïîäãîòàâëèâàåò ãëîáàëüíûå ïåðåìåííûå * |
| ;* COMPortNum è COMPortBaseAddr äëÿ ïîäïðîãðàììû * |
| ;* óñòàíîâêè îáðàáîò÷èêà ïðåðûâàíèÿ * |
| ;************************************************** |
| ; Àâòîð èñõîäíîãî òåêñòà Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷. |
| ; Àäàïòàöèÿ è äîðàáîòêà Mario79 |
| |
| MSMouseSearch: |
| pusha |
| ; Çàïðåòèòü ïðåðûâàíèå COM1 è COM2 |
| cli |
| in AL,21h ;ïðî÷èòàòü ìàñêó ïðåðûâàíèé |
| or AL,18h ;çàïðåòèòü IRQ3 è IRQ4 |
| out 21h,AL ;çàìåíèòü ìàñêó |
| sti |
| ; ÏÎÈÑÊ ÌÛØÈ ×ÅÐÅÇ COM-ÏÎÐÒÛ |
| MouseSearch: |
| ; Óñòàíàâëèâàåì ñêîðîñòü |
| ; ïðèåìà/ïåðåäà÷è 1200 áîä |
| mov DX,[COMPortBaseAddr] |
| add DX,3 |
| in AL,DX |
| or AL,80h ;óñòàíîâèòü áèò DLAB |
| out DX,AL |
| mov DX,[COMPortBaseAddr] |
| mov AL,60h ;1200 áîä |
| out DX,AL |
| inc DX |
| mov AL,0 |
| out DX,AL |
| ; Óñòàíîâèòü äëèíó ñëîâà 7 áèò, 1 ñòîïîâûé áèò, |
| ; ÷åòíîñòü íå êîíòðîëèðîâàòü |
| mov DX,[COMPortBaseAddr] |
| add DX,3 |
| mov AL,00000010b |
| out DX,AL |
| ; Çàïðåòèòü âñå ïðåðûâàíèÿ |
| mov DX,[COMPortBaseAddr] |
| inc DX |
| mov AL,0 |
| out DX,AL |
| ; Ïðîâåðèòü, ÷òî óñòðîéñòâî ïîäêëþ÷åíî è ÿâëÿåòñÿ |
| ; ìûøüþ òèïà MSMouse |
| ; Îòêëþ÷èòü ïèòàíèå ìûøè è ïðåðûâàíèÿ |
| mov DX,[COMPortBaseAddr] |
| add DX,4 ;ðåãèñòð óïðàâëåíèÿ ìîäåìîì |
| mov AL,0 ;ñáðîñèòü DTR, RTS è OUT2 |
| out DX,AL |
| ; Îæèäàòü 5 "òèêîâ" (0,2 ñ) |
| mov ecx,0xffff |
| dT_1: |
| dec ecx |
| cmp ecx,0 |
| jne dT_1 |
| mov ecx,0xffff |
| ; Âêëþ÷èòü ïèòàíèå ìûøè |
| mov AL,11b ;óñòàíîâèòü DTR è RTS |
| out DX,AL |
| ; Î÷èñòèòü ðåãèñòð äàííûõ |
| mov DX,[COMPortBaseAddr] |
| in AL,DX |
| ; Öèêë îïðîñà ïîðòà |
| WaitData: |
| ; Îæèäàòü åùå 10 "òèêîâ" |
| dec ecx |
| cmp ecx,0 |
| je NoMouse |
| ; Ïðîâåðèòü íàëè÷èå èäåíòèôèêàöèîííîãî áàéòà |
| mov DX,[COMPortBaseAddr] |
| add DX,5 |
| in AL,DX |
| test AL,1 ;Äàííûå ãîòîâû? |
| jz WaitData |
| ; Ââåñòè äàííûå |
| mov DX,[COMPortBaseAddr] |
| in AL,DX |
| ; Óñòðîéñòâî ÿâëÿåòñÿ ìûøüþ? |
| cmp AL,'M' |
| je EndDetect |
| NoMouse: |
| inc [COMPortNum] |
| cmp [COMPortNum],1 |
| ja EndDetect |
| sub [COMPortBaseAddr],100h |
| jmp MouseSearch |
| |
| iglobal |
| COMPortBaseAddr dw 3F8h |
| COMPortNum dw 0 |
| endg |
| |
| iglobal |
| boot_setmouse_type db 'No COM mouse, set PS2',0 |
| db 'Detected - COM1 mouse',0 |
| db 'Detected - COM2 mouse',0 |
| |
| endg |
| |
| EndDetect: |
| cmp [COMPortNum],0 ;íîìåð ïîðòà ìåíüøå 0? |
| jl ComMouseNotFound ;ìûøü íå íàéäåíà |
| cmp [COMPortNum],1 ;íîìåð ïîðòà áîëüøå 1? |
| ja ComMouseNotFound ;ìûøü íå íàéäåíà |
| mov ax,[COMPortNum] |
| add al,2 |
| jmp set_detecting_mouse |
| ComMouseNotFound: |
| mov al,1 |
| set_detecting_mouse: |
| mov [0xF604],al |
| dec al |
| movzx eax,al |
| imul eax,22 |
| mov esi,boot_setmouse_type |
| add esi,eax |
| call boot_log |
| popa |
| |
| |