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Rev 5075 Rev 5076
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; Check if a MS type serial mouse is connected
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; Check if a MS type serial mouse is connected
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; Disable power and mouse interrupts
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; Disable power and mouse interrupts
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        mov     dx, bx
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        mov     dx, bx
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        add     dx, 4           ; modem control register
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        add     dx, 4           ; modem control register
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        mov     al, 0           ; reset DTR, RTS, and OUT2
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        mov     al, 0           ; reset DTR, RTS, and AUX2
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        out     dx, al
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        out     dx, al
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; Wait 5 ticks (0.2s)
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; Wait 5 ticks (0.2s)
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; Clear data register
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; Clear data register
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        mov     dx, bx
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        mov     dx, bx
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        in      al, dx
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        in      al, dx
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; set DTR, DTS and OUT2
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; Power on the mouse
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        add     dx, 4
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        add     dx, 4
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        mov     al, 1011b
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        mov     al, 1011b       ; set DTR, DTS and AUX2
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        out     dx, al
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        out     dx, al
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        ; Left and Right Buttons
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        ; Left and Right Buttons
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        mov     al, [esi + com_mouse_data.data+0]
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        mov     al, [esi + com_mouse_data.data+0]
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        mov     ah, al
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        mov     ah, al
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        shr     al, 3           ; right mouse button
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        shr     al, 3           ; right mouse button
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        and     al, 2           ;
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        and     al, 10b         ;
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        shr     ah, 5           ; left mouse button
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        shr     ah, 5           ; left mouse button
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        and     ah, 1           ;
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        and     ah, 1b          ;
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        add     al, ah
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        or      al, ah
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        movzx   eax, al
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        and     [BTN_DOWN], not 11b
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        mov     [BTN_DOWN], eax
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        or      byte[BTN_DOWN], al
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        ; X coordinate
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        ; X coordinate
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        mov     al, [esi + com_mouse_data.data+0]
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        mov     al, [esi + com_mouse_data.data+0]
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        pop     esi
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        pop     esi
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        mov     al, 1
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        mov     al, 1
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        ret
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        ret
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- 
 
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  .FourthByte:
- 
 
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        cmp     [esi + com_mouse_data.offset], 2
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  .FourthByte:
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        jne     .end
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        inc     [esi + com_mouse_data.offset]
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        inc     [esi + com_mouse_data.offset]
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        and     [BTN_DOWN], not 100b
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        test    al, 00100000b
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        test    al, 00100000b
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        jz      @f
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        jz      .end
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        or      byte[BTN_DOWN], 100b
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        or      [BTN_DOWN], 100b
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  @@:
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        invoke  SetMouseData, [BTN_DOWN], [MOUSE_X], [MOUSE_Y], 0, 0
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        invoke  SetMouseData, [BTN_DOWN], 0, 0, 0, 0
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  .end:
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  .end: