;BEEF MOUSE (THE COW OF MOUSE DRIVERS)
;PS/2 MOUSE DRIVER FOR ANY OS
;Tested in FreeDOS
;converted to FASM by Shawn T. Cook (Bugs fixed!)
;Version 3.0
;runs smoother now.
Org 100h
mov ah, 0 ;text screen mode
mov al, 13h
int 0x10
;I will use the NASM syntax!! CONVERTED TO FASM!
;I made this code for a Logitech M-S48a mouse. (normal PS/2 Code)
;For some reason the keyboard wil stall after program is terminated :S
;If you have problems understandig this code take a look at my mouseprog for the COM-mouse
;(Piece of disclaimer)
;(I do NOT give any guarantee or what so ever on this piece of code.)
;(I am not responsible for any damage whatsoever )
;(By using this code u accept the two lines above )
;(USAGE IS AT YOUR OWN RISK )
;***************************************************
;* This is for the system to know where to jump to *
;***************************************************
; load source into DS:SI, *
; load target into ES:DI: *
MOV AX, CS ;*
MOV DS, AX ;*
MOV ES, AX ;*
;***************************************************
JMP MAINP
;***********************************************************************
;Activate mouse port (PS/2)
;***********************************************************************
PS2SET:
mov al, 0xa8 ; enable mouse port
out 0x64, al ; write to keyboardcontroller
call CHKPRT ; check if command is progressed (demand!)
ret
;***********************************************************************
;Check if command is accepted. (not got stuck in inputbuffer)
;***********************************************************************
CHKPRT:
xor cx, cx
again:
in al, 0x64 ; read from keyboardcontroller
test al, 2 ; Check if input buffer is empty
jz gogo
jmp again ; (demand!) This may couse hanging, use only when sure.
gogo:
ret
;***********************************************************************
;Write to mouse
;***********************************************************************
WMOUS:
mov al, 0xd4 ; write to mouse device instead of to keyboard
out 0x64, al ; write to keyboardcontroller
call CHKPRT ; check if command is progressed (demand!)
ret
;***********************************************************************
;mouse output buffer full
;***********************************************************************
MBUFFUL:
xor cx, cx
mn:
in al, 0x64 ; read from keyboardcontroller
test al, 0x20 ; check if mouse output buffer is full
jz mnn
loop mn
mnn:
ret
;***********************************************************************
;Write activate Mouse HardWare
;***********************************************************************
ACTMOUS:
call WMOUS
mov al, 0xf4 ; Command to activate mouse itselve (Stream mode)
out 0x60, al ; write ps/2 controller output port (activate mouse)
call CHKPRT ; check if command is progressed (demand!)
call CHKMOUS ; check if a byte is available
ret
;***********************************************************************
;Check if mouse has info for us
;***********************************************************************
CHKMOUS:
mov bl, 0
xor cx, cx
vrd:
in al, 0x64 ; read from keyboardcontroller
test al, 1 ; check if controller buffer (60h) has data
jnz yy
loop vrd
mov bl, 1
yy:
ret
;***********************************************************************
;Disable Keyboard
;***********************************************************************
DKEYB:
mov al, 0xad ; Disable Keyboard
out 0x64, al ; write to keyboardcontroller
call CHKPRT ; check if command is progressed (demand!)
ret
;***********************************************************************
;Enable Keyboard
;***********************************************************************
EKEYB:
mov al, 0xae ; Enable Keyboard
out 0x64, al ; write to keyboardcontroller
call CHKPRT ; check if command is progressed (demand!)
ret
;***********************************************************************
;Get Mouse Byte
;***********************************************************************
GETB:
cagain:
call CHKMOUS ; check if a byte is available
or bl, bl
jnz cagain
call DKEYB ; disable keyboard to read mouse byte
xor ax, ax
in al, 0x60 ; read ps/2 controller output port (mousebyte)
mov dl, al
call EKEYB ; enable keyboard
mov al, dl
ret
;***********************************************************************
;Get 1ST Mouse Byte
;***********************************************************************
GETFIRST:
call GETB ;Get byte1 of packet
xor ah, ah
mov bl, al
and bl, 1
mov BYTE [cs:LBUTTON], bl
mov bl, al
and bl, 2
mov BYTE [cs:RBUTTON], bl
mov bl, al
and bl, 4
mov BYTE [cs:MBUTTON], bl
mov bl, al
and bl, 8
mov BYTE [cs:XCOORDN], bl
mov bl, al
and bl, 16
mov BYTE [cs:YCOORDN], bl
mov bl, al
and bl, 32
mov BYTE [cs:XFLOW], bl
mov bl, al
and bl, 64
mov BYTE [cs:YFLOW], bl
ret
;***********************************************************************
;Get 2ND Mouse Byte
;***********************************************************************
GETSECOND:
call GETB ;Get byte2 of packet
xor ah, ah
mov BYTE [cs:XCOORD], al
ret
;***********************************************************************
;Get 3RD Mouse Byte
;***********************************************************************
GETTHIRD:
call GETB ;Get byte3 of packet
xor ah, ah
mov BYTE [cs:YCOORD], al
ret
;-----------------------------------------------------------------------
;***********************************************************************
;* MAIN PROGRAM
;***********************************************************************
;-----------------------------------------------------------------------
MAINP:
call PS2SET
call ACTMOUS
call GETB ;Get the responce byte of the mouse (like: Hey i am active) If the bytes are mixed up, remove this line or add another of this line.
main:
call GETFIRST
call GETSECOND
call GETTHIRD
;*NOW WE HAVE XCOORD & YCOORD* + the button status of L-butten and R-button and M-button allsow overflow + sign bits
;!!!
;! The Sign bit of X tells if the XCOORD is Negative or positive. (if 1 this means -256)
;! The XCOORD is allways positive
;!!!
;???
;? Like if: X-Signbit = 1 Signbit
;? |
;? XCOORD = 11111110 ---> -256 + 254 = -2 (the mouse cursor goes left)
;? \ /
;? \ /
;? \Positive
;???
;?? FOR MORE INFORMATION ON THE PS/2 PROTOCOL SEE BELOW!!!!
;!!!!!!!!!!!!!
;the rest of the source... (like move cursor) (i leave this up to you m8!)
;!!!!!!!!!!!!!
;*************************************************************
;Allright, Allright i'll give an example! |EXAMPLE CODE|
;*************************************************************
;=============================
;**Mark a position on scr**
;=============================
xor cx, cx
xor dx, dx
mov cl,byte [cs:XCOORD]
mov dl,byte [cs:YCOORD]
cmp cl, 0
je NoxChange
cmp cl, 0
jg Subx
sub WORD [cs:xpos], 1
jmp NoxChange
Subx:
add WORD [cs:xpos], 1
NoxChange:
cmp dl, 0
je NoyChange
cmp dl, 0
jg Addy
add WORD [cs:ypos], 1
jmp NoyChange
Addy:
sub WORD [cs:ypos], 1
NoyChange:
mov cx,word [cs:xpos]
mov dx,word [cs:ypos]
Mov AH,0Ch
Mov AL,15
Mov CX,CX
Mov DX,DX
Int 10h
mov BYTE [cs:row], 15
mov BYTE [cs:col], 0
;=============================
;**go to start position**
;=============================
call GOTOXY
;=============================
;**Lets display the X coord**
;=============================
mov si, strcdx ; display the text for Xcoord
call disp
xor ah, ah
mov al, BYTE [cs:XCOORD]
call DISPDEC
mov si, stretr ; goto nextline on scr
call disp
;=============================
;**Lets display the Y coord**
;=============================
mov si, strcdy ; display the text for Ycoord
call disp
xor ah, ah
mov al, BYTE [cs:YCOORD]
call DISPDEC
mov si, stretr ; goto nextline on scr
call disp
;=============================
;**Lets display the L button**
;=============================
mov si, strlbt ; display the text for Lbutton
call disp
mov al, BYTE [cs:LBUTTON]
xor ah, ah
call DISPDEC
mov si, stretr ; goto nextline on scr
call disp
;=============================
;**Lets display the R button**
;=============================
mov si, strrbt ; display the text for Rbutton
call disp
mov al, BYTE [cs:RBUTTON]
xor ah, ah
call DISPDEC
mov si, stretr ; goto nextline on scr
call disp
;=============================
;**Lets display the M button**
;=============================
mov si, strmbt ; display the text for Mbutton
call disp
mov al, BYTE [cs:MBUTTON]
xor ah, ah
call DISPDEC
mov si, stretr ; goto nextline on scr
call disp
;=============================
;**Lets display sign of y
;=============================
mov si, signy ; display the text for Mbutton
call disp
mov al, BYTE [cs:YCOORDN]
xor ah, ah
call DISPDEC
mov si, stretr ; goto nextline on scr
call disp
;=============================
;**stop program on keypress** |Note: sometimes it takes a while for the program stops, or keyboard stalls|
;============================= |due to more time is spend looking at the PS/2 mouse port (keyb disabled) |
xor ax, ax
mov ah, 0x11
int 0x16
jnz quitprog
;*************************************************************
jmp main
quitprog:
mov ax, 0x0003
int 0x10
MOV AH, 0x4C ;Return to OS
INT 0x21
;-----------------------------------------------------------------------
;***********************************************************************
;* END OF MAIN PROGRAM
;***********************************************************************
;-----------------------------------------------------------------------
;XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
;X Dont Worry about this displaypart, its yust ripped of my os.
;X (I know it could be done nicer but this works 
)
;XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
;XXX
;************************************************
;* Displays AX in a decimal way
;************************************************
DISPDEC:
mov BYTE [cs:zerow], 0x00
mov WORD [cs:varbuff], ax
xor ax, ax
xor cx, cx
xor dx, dx
mov bx, 10000
mov WORD [cs:deel], bx
mainl :
mov bx, WORD [cs:deel]
mov ax, WORD [cs:varbuff]
xor dx, dx
xor cx, cx
div bx
mov WORD [cs:varbuff], dx
jmp ydisp
vdisp:
cmp BYTE [cs:zerow], 0x00
je nodisp
ydisp:
mov ah, 0x0E ; BIOS teletype
add al, 48 ; lets make it a 0123456789 
mov bx, 1
int 0x10 ; invoke BIOS
mov BYTE [cs:zerow], 0x01
jmp yydis
nodisp:
yydis:
xor dx, dx
xor cx, cx
xor bx, bx
mov ax, WORD [cs:deel]
cmp ax, 1
je bver
cmp ax, 0
je bver
mov bx, 10
div bx
mov WORD [cs:deel], ax
jmp mainl
bver:
ret
;***************END of PROCEDURE*********************************
;****************************************************************
;* PROCEDURE disp
;* display a string at ds:si via BIOS
;****************************************************************
disp:
HEAD:
lodsb ; load next character
cmp al, 0 ; test for NUL character
je DONE ; if NUL char found then goto done
mov ah, 0x0E ; BIOS teletype
mov bx, 1 ; make it a nice fluffy blue (mostly it will be grey but ok..)
int 0x10 ; invoke BIOS
jmp HEAD
DONE:
ret
;*******************End Procedure ***********************
;*****************************
;*GOTOXY go back to startpos
;*****************************
GOTOXY:
mov ah, 2
mov bh, 0 ;0:graphic mode 0-3: in modes 2&3 0-7: in modes 0&1
mov dl, BYTE [cs:col]
mov dh, BYTE [cs:row]
int 0x10
ret
;*******END********
;
;XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
;XXX
;XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
;***********************************************************************
;variables
;***********************************************************************
LBUTTON db 0x00 ; Left button status 1=PRESSED 0=RELEASED
RBUTTON db 0x00 ; Right button status 1=PRESSED 0=RELEASED
MBUTTON db 0x00 ; Middle button status 1=PRESSED 0=RELEASED
XCOORD db 0x00 ; the moved distance (horizontal)
YCOORD db 0x00 ; the moved distance (vertical)
XCOORDN db 0x00 ; Sign bit (positive/negative) of X Coord
YCOORDN db 0x00 ; Sign bit (positive/negative) of Y Coord
XFLOW db 0x00 ; Overflow bit (Movement too fast) of X Coord
YFLOW db 0x00 ; Overflow bit (Movement too fast) of Y Coord
;************************************
;* Some var's of my display function
;************************************
deel dw 0x0000
varbuff dw 0x0000
zerow db 0x00
strlbt db "Left button: ", 0x00
strrbt db "Right button: ", 0x00
strmbt db "Middle button: ", 0x00
strcdx db "Mouse moved (X): ", 0x00
strcdy db "Mouse moved (Y): ", 0x00
signy db "Sign (y): " ,0x00
stretr db 0x0D, 0x0A, 0x00
strneg db "-", 0x00
strsp db " ", 0x00
row db 0x00
col db 0x00
xpos dw 0x0000
ypos dw 0x0000
;***********************************************************************
; PS/2 mouse protocol (Standard PS/2 protocol)
;***********************************************************************
; ----------------------------------------------------------------------
;
; Data packet format:
; Data packet is 3 byte packet.
; It is send to the computer every time mouse state changes
; (mouse moves or keys are pressed/released).
;
; Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
;
; 1. YO XO YS XS 1 MB RB LB
; 2. X7 X6 X5 X4 X3 X2 X1 X0
; 3. Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
;
; This means:
; YO : Overflow bit for Y-coord (movement to fast)
; XO : Overflow bit for X-coord (movement to fast)
; X0-X7: byte of the x-coord
; Y0-Y7: byte of the y-coord
; LB : Left button pressed
; RB : Right button pressed
; MB : Middle button pressed
;
;***********************************************************************
;If you want to use the scroll function u might look up the protocol at
;the company that made the mouse.
;(the packet format will then mostly be greater then 3)
;***********************************************************************
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