kolibrios/kernel/branches/flat_kernel/hid/m_com1.inc
Sergey Semyonov (Serge) f591baba3e create branch
git-svn-id: svn://kolibrios.org@387 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-03-05 20:17:43 +00:00

131 lines
3.9 KiB
PHP

; 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 [BTN_DOWN],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,[MOUSE_X] ;[XCoordinate]
; Êóðñîð íå äîëæåí âûõîäèòü çà ëåâóþ èëè
; ïðàâóþ ãðàíèöó ýêðàíà
js @@X1
cmp AX,[ScreenWidth] ;ScreenLength
jb @@X2
; Óñòàíîâèòü êîîðäèíàòó X ïî ïðàâîé ãðàíèöå
mov AX,[ScreenWidth] ;ScreenLength-1
dec ax
jmp @@X2
@@X1:
; Óñòàíîâèòü êîîðäèíàòó X ïî ëåâîé ãðàíèöå
xor AX,AX
@@X2:
mov [MOUSE_X],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,[MOUSE_Y] ;[YCoordinate]
; Êóðñîð íå äîëæåí âûõîäèòü çà âåðõíþþ èëè
; íèæíþþ ãðàíèöó ýêðàíà
js @@Y1
cmp AX,[ScreenHeight] ;ScreenHeigth
jb @@Y2
; Óñòàíîâèòü êîîðäèíàòó X ïî íèæíåé ãðàíèöå
mov AX,[ScreenHeight] ;ScreenHeigth-1
dec ax
jmp @@Y2
@@Y1:
; Óñòàíîâèòü êîîðäèíàòó X ïî âåðõíåé ãðàíèöå
xor AX,AX
@@Y2:
mov [MOUSE_Y],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
imul ax,[mouse_speed_factor]
@@:
ret