;Rollmaus-Treiber
.386 ;32bit-Segmente aktivieren
include tvmm.inc ;Generelles
include debug.inc ;wegen Debugging
include vpicd.inc ;Interrupt-Controller
MOUSEH_Device_ID equ 37FCh ;NICHT RESERVIERT!
MOUSEH_Major_Ver equ 1
MOUSEH_Minor_Ver equ 0
;=============================
ifdef DEBUG
%OUT !Assembliere Debugversion!
endif
locals @@
Declare_Virtual_Device MOUSEH, MOUSEH_Major_Ver, MOUSEH_Minor_Ver,\
MOUSEH_Control_Proc, MOUSEH_Device_ID,\
Undefined_Init_Order,MOUSEH_API,MOUSEH_API
;*********************************************************
;*** Obligatorischer VxD-Botschafts-Funktionsverteiler ***
;*********************************************************
VxD_Locked_Code_Seg
BeginProc MOUSEH_Control_Proc
Control_Dispatch Sys_VM_Init, MOUSEH_Init
Control_Dispatch Sys_VM_Terminate, MOUSEH_Exit
clc
ret
EndProc MOUSEH_Control_Proc
VxD_Locked_Code_ends
MOUSEINFO struc
msExists DB 0 ; true => mouse exists
msRelative DB 0 ; true => relative coordinate
msNumButtons DW 0 ; number of buttons on the mouse
msRate DW 0 ; maximum rate of mouse input events
msXThresh DW 0 ; threshold before acceleration
msYThresh DW 0 ;
msXRes DW 0 ; x resolution
msYRes DW 0 ; y resolution
MOUSEINFO ends
;********************************************************
;*** Residenter Datenbereich und Konstantendefinition ***
;********************************************************
VxD_Locked_Data_Seg
IrqHand dd ? ;IRQ-Griff
mouse_event dd ? ;Callback-Adresse (in USER.EXE)
bytebuffer db 4 dup (?)
bytecount db 0
prevbuttons db 0
VxD_Locked_Data_Ends
VxD_Locked_Code_Seg
;****************************
;*** Periodische Aktionen ***
;****************************
NewIrq12 PROC
mov eax,[IrqHand]
VxDCall VPICD_Phys_EOI
in al,64h
not al
and al,21h ;Mausdaten?
stc
jnz @@e ;nein, IRQ weiterreichen
in al,60h ;Maus-Byte
sti
movzx ecx,[bytecount]
mov [bytebuffer+ecx],al
jecxz @@1
jmp @@2
@@1:
test al,8 ;kann 1. Byte sein?
jz @@e ;nein!
cmp al,0FAh ;ACK-Byte?
je @@e ;auch kein Mausdatenpaket
@@2: inc cl
and cl,3 ;nur 0..3
mov [bytecount],cl
jecxz @@3
@@e:
ret
@@3: ;mouse_event benachrichtigen
mov edx,dword ptr [bytebuffer]
mov eax,High_Pri_Device_Boost
VMMCall Get_Sys_VM_Handle
mov ecx,PEF_Wait_For_STI or PEF_Wait_Not_Crit or PEF_Always_Sched
lea esi,[call_mouse_event]
xor edi,edi ;Timeout sicherheitshalber auf Null
VMMCall Call_Priority_VM_Event
ret
NewIrq12 ENDP
;******************************************
;*** Rückruf-Funktion ***
;******************************************
BeginProc call_mouse_event
;in EDX sind die vier Maus-Bytes enthalten
INT 1
Push_Client_State Uses_EDI
VMMCall Begin_Nest_Exec
mov al,DL
;Buttons in Zweierschritten aufblasen (L=left, R=right, M=middle)
shl eax,6 ;AX = 0000000M RL000000
and ah,1
add ah,ah ;AX = 000000M0 RL000000
add eax,eax ;AX = 00000M0R L0000000
add ah,ah ;AX = 0000M0R0 L0000000
add eax,eax ;AX = 000M0R0L 00000000
mov al,ah ;AX = 000M0R0L 000M0R0L
xchg al,[prevbuttons]
mov ecx,eax ;AX = new old, CX = new old
xchg ah,al ;AX = old new, CX = new old
not ecx ;AX = old new, CX = /new /old
and ecx,eax ;CL = new AND NOT old = ButtonDown,
;CH = old AND NOT new = ButtonUp
add ch,ch
or cl,ch ;interleave the bits: 00ududud
mov ch,0
bt EDX,4 ;test for X negative
sbb ah,ah
mov al,DH
mov [ebp.Client_BX],ax
bt EDX,5 ;test for Y negative
sbb ah,ah
ror EDX,16
mov al,DL
neg ax ;They don't know which direction is up
mov [ebp.Client_CX],ax
or ax,[ebp.Client_BX] ;Set movement bit if movement
neg ax
adc cl,cl ;CY einschieben, Nulltest
mov [ebp.Client_AX],cx
mov [ebp.Client_DX],3 ;three buttons
mov [ebp.Client_SI],0 ;zero extra info
mov [ebp.Client_DI],0 ;zero extra info
jnz @@have_data
or DH,DH
jz @@no_data
@@have_data:
or DH,DH
jz @@no_wheel
mov al,-120 ;change sign to reverse direction
imul DH
mov [ebp.Client_SI],ax
mov [ebp.Client_DI],4001h
or [ebp.Client_AL],40h ;deliver extra MButtonUp
@@no_wheel:
movzx edx,word ptr [mouse_event]
mov cx,word ptr [mouse_event+2]
jcxz @@no_data
VMMCall Simulate_Far_Call
VMMCall Resume_Exec
@@no_data:
VMMCall End_Nest_Exec
Pop_Client_State Uses_ESI
@@e:
ret
EndProc call_mouse_event
;***************************
;*** Neue API-Funktionen ***
;***************************
SendCommand1 PROC
;1-Byte-Kommando DH senden
mov al,0D4h
out 64h,al
@@l1: in al,64h
test al,2
jnz @@l1
mov al,dh
out 60h,al
in al,64h
not al
test al,21h ;Daten vorhanden?
jnz @@e
in al,60h ;Datum lesen
@@e: ret
SendCommand1 ENDP
SendCommand2 PROC
;2-Byte-Kommando DH/DL senden
call SendCommand1
xchg dh,dl
call SendCommand1
xchg dh,dl
ret
SendCommand2 ENDP
BeginProc MOUSEH_API
mov ax,[ebp.Client_AX] ;AX laden
cmp ah,4
ja @@e
Debug_Out "ApiCall Fkt=#AH"
dec ah
jz @@inquire
dec ah
jz @@enable
dec ah
jz @@disable
dec ah
jz @@getintvect
mov [ebp.Client_AX],100h ;Version
jmp @@e
@@inquire:
Client_Ptr_Flat eax,ES,BX
mov dword ptr [eax.msExists],00030101h
mov [eax.msRate],34
mov [ebp.Client_AX],14 ;14 Bytes Struktur-Länge
jmp @@e
@@enable:
mov ax,[ebp.Client_ES]
shl eax,16
mov ax,[ebp.Client_BX]
mov [mouse_event],eax
mov dh,0F4h ;aktivieren
call SendCommand1
mov eax,[IrqHand]
VxDcall VPICD_Physically_Unmask
VxDcall VPICD_Phys_EOI ;evtl. Verklemmer lösen
jmp @@e
@@disable:
mov eax,[IrqHand]
VxDcall VPICD_Physically_Mask
mov dh,0F5h
call SendCommand1 ;deaktivieren
jmp @@e
@@getintvect:
mov ax,12
mov [ebp.Client_AX],ax
@@e:
ret
EndProc MOUSEH_Api
;*********************
;*** Exit-Funktion ***
;*********************
MOUSEH_Exit proc
Debug_Out "MOUSEH_Exit"
mov eax,[IrqHand]
VxDcall VPICD_Force_Default_Behavior
ret
MOUSEH_Exit endp
VxD_Locked_Code_Ends
;******************************
;*** Installations-Funktion ***
;******************************
VxD_IData_Seg
IrqDesc VPICD_Irq_Descriptor <12,VPICD_Opt_Can_Share,OFFSET32 NewIrq12>
VxD_IData_Ends
VxD_ICode_Seg
BeginProc MOUSEH_Init
;* IRQ12 freischalten
Debug_Out "MOUSEH_Init"
call InitIntelliMouse
lea edi,IrqDesc
VxDcall VPICD_Virtualize_IRQ
jc @@e
mov [IrqHand],eax
@@e:
ret
EndProc MOUSEH_Init
BeginProc InitIntelliMouse
cli
mov al,0A8h ;Zusatzeinheit ansprechen
out 64h,al
mov dh,0F6h ;Standard einstellen
call SendCommand1
mov dx,0F3C8h ;Magische Folge zur Aktivierung 4-Byte-Modus!
call SendCommand2
mov dl,64h
call SendCommand2
mov dl,50h
call SendCommand2
sti
ret
EndProc InitIntelliMouse
VxD_ICode_Ends
END
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