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;;   Calculator for MenuetOS (original version)

;;  (c)Ville Turjanmaa

;;   Compile with FASM for Menuet

;;

;;What's new:

;;   Calc 1.1

;;           1)changed design

;;           2)new procedure of draw window (10 decimal digits, 23 binary, "+" not displayed now)

;;           3)window with skin

;;           4)I had used macroses

;;   Calc 1.2

;;           1)added some useful functions, such as arcsin, arccos, arctg, 1/x, x^2

;;   Calc 1.31

;;           1)optimised program

;;           2)new type of window (you need kernel 114 revision or higher)

;;  Pavel Rymovski (Heavyiron)

appname equ 'Calc '

version equ '1.31'

use32

               org    0x0

               db    'MENUET01'               ; 8 byte id

               dd     0x01                    ; header version

               dd     START                   ; start of code

               dd     I_END                   ; size of image

               dd     0x1000                  ; memory for app

               dd     0x1000                  ; esp

               dd     0x0,0x0                 ; I_Param , I_Icon

include 'macros.inc'

START:

red:

    call draw_window

still:

    push 10

    pop eax

    int 40h

    dec eax

    jz red

    dec eax

    jz key

button:

    mov  al,17      ; ������� �����䨪��� ����⮩ ������

    int  0x40

    shr  eax,8

    jmp  testbut

key:

    mov  al,2       ; ������� ASCII-��� ����⮩ ������

    int  0x40

    shr  eax,8

    mov  edi,asci   ; ��ॢ�� ASCII � �����䨪��� ������

    mov  ecx,18

    cld

    repne scasb

    jne  still

    sub  edi,asci

    dec  edi

    mov  esi,butid

    add  esi,edi

    lodsb

  testbut:

    cmp  eax,1      ; ������ 1 - �����⨥ �ணࠬ��

    jne  noclose

    or   eax,-1

    int  0x40

  noclose:

    cmp  eax,2

    jne  no_reset

    call clear_all

    jmp  still

  no_reset:

    finit

    mov  ebx,muuta1  ; ��ॢ�� � �ଠ� FPU

    mov  esi,18

    call atof

    fstp [trans1]

    mov  ebx,muuta2

    mov  esi,18

    call atof

    fst  [trans2]

    cmp  eax,33

    jne  no_sign

    cmp  [dsign],byte '-'

    jne  no_m

    mov  [dsign],byte '+'

    call print_display

    jmp  still

  no_m:

    mov  [dsign],byte '-'

    call print_display

    jmp  still

  no_sign:

    cmp  eax,3

    jne  no_display_change

    inc  [display_type]

    cmp  [display_type],2

    jbe  display_continue

    mov  [display_type],0

  display_continue:

    mov  eax,[display_type]

    mov  eax,[multipl+eax*4]

    mov  [entry_multiplier],eax

    call print_display

    jmp  still

  multipl:  dd 10,16,2

  no_display_change:

    cmp  eax,6

    jb   no_a_f

    cmp  eax,11

    jg   no_a_f

    add  eax,4

    call number_entry

    jmp  still

   no_a_f:

    cmp  eax,12

    jb   no_13

    cmp  eax,14

    jg   no_13

    sub  eax,11

    call number_entry

    jmp  still

   no_13:

    cmp  eax,19

    jb   no_46

    cmp  eax,21

    jg   no_46

    sub  eax,15

    call number_entry

    jmp  still

   no_46:

    cmp  eax,26

    jb   no_79

    cmp  eax,28

    jg   no_79

    sub  eax,19

    call number_entry

    jmp  still

   no_79:

    cmp  eax,34

    jne  no_0

    xor  eax,eax

    call number_entry

    jmp  still

   no_0:

    cmp  eax,35

    jne  no_id

    inc  [id]

    and  [id],1

    mov  [new_dec],100000

    jmp  still

  no_id:

    cmp  eax,17

    jne  no_sin

    fld  [trans1]

    fsin

    jmp  show_result

  no_sin:

    cmp  eax,18

    jne  no_asin

    fld  [trans1]

    fld  st0

    fmul st,st1

    fld1

    fsubrp  st1,st0

    fsqrt

    fpatan

    jmp  show_result

  no_asin:

    cmp  eax,16

    jne  no_int

    fld  [trans1]

    frndint

    jmp  show_result

  no_int:

    cmp  eax,23

    jne  no_1x

    fld  [trans1]

    fld1

    fdiv st,st1

    jmp  show_result

  no_1x:

    cmp  eax,24

    jne  no_cos

    fld  [trans1]

    fcos

    jmp  show_result

  no_cos:

    cmp  eax,25

    jne  no_acos

    fld  [trans1]

    fld1

    fsub st,st1

    fsqrt

    fld1

    fadd st,st2

    fsqrt

    fpatan

    fadd st,st0

    jmp  show_result

  no_acos:

    cmp  eax,30

    jne  no_x2

    fld  [trans1]

    fmul st,st0

    jmp  show_result

  no_x2:

    cmp  eax,31

    jne  no_tan

    fld  [trans1]

    fptan

    fstp st2

    jmp  show_result

  no_tan:

    cmp  eax,32

    jne  no_atan

    fld  [trans1]

    fld1

    fpatan

    jmp  show_result

   no_atan:

    cmp  eax,38

    jne  no_pi

    fldpi

    jmp  show_result

   no_pi:

    cmp  eax,37

    jne  no_sqrt

    fld  [trans1]

    fsqrt

    jmp  show_result

  no_sqrt:

    cmp  eax,15

    jne  no_add

    call calculate

    call new_entry

    mov  [calc],'+'

    jmp  still

  no_add:

    cmp  eax,22

    jne  no_sub

    call calculate

    call new_entry

    mov  [calc],'-'

    jmp  still

  no_sub:

    cmp  eax,29

    jne  no_div

    call calculate

    call new_entry

    mov  [calc],'/'

    jmp  still

  no_div:

    cmp  eax,36

    jne  no_mul

    call calculate

    mov  [calc],'*'

    call new_entry

    jmp  still

  no_mul:

    cmp    eax,39

    jne    no_calc

    call   calculate

    jmp    still

  no_calc:

    jmp  still

  show_result:

    call   ftoa

    call   print_display

    jmp    still

error:

    jmp  still

calculate:

    pusha

    cmp  [calc],' '

    je   no_calculation

    cmp  [calc],'/'

    jne  no_cdiv

    fdiv [trans1]

  no_cdiv:

    cmp  [calc],'*'

    jne  no_cmul

    fmul [trans1]

  no_cmul:

    cmp  [calc],'+'

    jne  no_cadd

    fadd [trans1]

  no_cadd:

    cmp  [calc],'-'

    jne  no_cdec

    fsub [trans1]

  no_cdec:

    call   ftoa

  no_calculation:

    call   print_display

    popa

    ret

number_entry:

    pusha

    cmp  eax,[entry_multiplier]

    jge  no_entry

    cmp  [id],1

    je   decimal_entry

    mov  ebx,[integer]

    test ebx,0xc0000000

    jnz  no_entry

    mov  ebx,eax

    mov  eax,[integer]

    mov  ecx,[entry_multiplier]

    mul  ecx

    add  eax,ebx

    mov  [integer],eax

    call print_display

    call to_muuta

    popa

    ret

  decimal_entry:

    imul eax,[new_dec]

    add  [decimal],eax

    mov  eax,[new_dec]

    xor  edx,edx

    mov  ebx,[entry_multiplier]

    div  ebx

    mov  [new_dec],eax

    call print_display

    call to_muuta

    popa

    ret

  no_entry:

    call print_display

    call to_muuta

    popa

    ret

 to_muuta:

    pusha

    mov  al,[dsign]

    mov  esi,muuta0

    mov  edi,muuta1

    mov  ecx,18

    cld

    rep  movsb

    mov  [muuta1],al

    mov  edi,muuta1+10     ; 楫��

    mov  eax,[integer]

  new_to_muuta1:

    mov  ebx,10

    xor  edx,edx

    div  ebx

    mov  [edi],dl

    add  [edi],byte 48

    dec  edi

    cmp  edi,muuta1+1

    jge  new_to_muuta1

    mov  edi,muuta1+17     ; �஡���

    mov  eax,[decimal]

  new_to_muuta2:

    mov  ebx,10

    xor  edx,edx

    div  ebx

    mov  [edi],dl

    add  [edi],byte 48

    dec  edi

    cmp  edi,muuta1+12

    jge  new_to_muuta2

    popa

    ret

new_entry:

    pusha

    mov  esi,muuta1

    mov  edi,muuta2

    mov  ecx,18

    cld

    rep  movsb

    mov  esi,muuta0

    mov  edi,muuta1

    mov  ecx,18

    cld

    rep  movsb

    mov  [integer],0

    mov  [decimal],0

    mov  [id],0

    mov  [new_dec],100000

    mov  [sign],byte '+'

    popa

    ret

ten          dd  10.0,0

tmp          dw  1,0

sign         db  1,0

tmp2         dq  0x0,0

exp          dd  0x0,0

new_dec      dd  100000,0

id           db  0x0,0

res          dd  0

trans1       dq  0

trans2       dq  0

controlWord  dw  1

ftoa:                         ; fpu st0 -> [integer],[decimal]

    pusha

    fst    [tmp2]

    fstcw  [controlWord]      ; set truncate integer mode

    mov    ax,[controlWord]

    mov    [tmp], ax

    or     [tmp], word 0x0c00

    fldcw  [tmp]

    ftst                      ; test if st0 is negative

    fstsw  ax

    and    ax, 0x4500

    mov    [sign], 0

    cmp    ax, 0x0100

    jne    no_neg

    mov    [sign],1

  no_neg:

    fistp  [integer]

    fld    [tmp2]

    fisub  [integer]

    fldcw  [controlWord]

    cmp    byte [sign], 0     ; change fraction to positive

    je     no_neg2

    fchs

  no_neg2:

    mov    [res],0     ; convert 6 decimal numbers

    mov    edi,6

   newd:

    fimul  [kymppi]

    fist   [decimal]

    mov    ebx,[res]

    imul   ebx,10

    mov    [res],ebx

    mov    eax,[decimal]

    add    [res],eax

    fisub  [decimal]

    ftst

    fstsw  ax

    dec    edi

    jz     real_done

    jmp    newd

  real_done:

    mov    eax,[res]

    mov    [decimal],eax

    cmp    [integer],0x80000000

    jne    no_error

    call   clear_all

    mov    [calc],'E'

  no_error:

    mov    [dsign],byte '+'

    cmp    [sign],byte 0      ; convert negative result

    je     no_negative

    mov    eax,[integer]

    not    eax

    inc    eax

    mov    [integer],eax

    mov    [dsign],byte '-'

  no_negative:

    call   to_muuta

    popa

    ret

atof:

    push ax

    push di

    fldz

    mov di, 0

    cmp si, 0

    je .error            ; Jump if string has 0 length.

    mov byte [sign], 0

    cmp byte [bx], '+'   ; Take care of leading '+' or '-'.

    jne .noPlus

    inc di

    jmp .noMinus

  .noPlus:

    cmp byte [bx], '-'

    jne .noMinus

    mov byte [sign], 1   ; Number is negative.

    inc di

  .noMinus:

    cmp si, di

    je .error

    call atof_convertWholePart

    jc .error

    call atof_convertFractionalPart

    jc .error

    cmp byte [sign], 0

    je .dontNegate

    fchs    ; Negate value

  .dontNegate:

    mov bh, 0    ; Set bh to indicate the string is a valid number.

    jmp .exit

  .error:

    mov bh, 1    ; Set error code.

    fstp st0    ; Pop top of fpu stack.

  .exit:

    pop di

    pop ax

    ret

atof_convertWholePart:

    ; Convert the whole number part (the part preceding the decimal

    ; point) by reading a digit at a time, multiplying the current

    ; value by 10, and adding the digit.

.mainLoop:

    mov al, [bx + di]

    cmp al, '.'

    je .exit

    cmp al, '0'       ; Make sure character is a digit.

    jb .error

    cmp al, '9'

    ja .error

    ; Convert single character to digit and save to memory for

    ; transfer to the FPU.

    sub al, '0'

    mov ah, 0

    mov [tmp], ax

    ; Multiply current value by 10 and add in digit.

    fmul dword [ten]

    fiadd word [tmp]

    inc di

    cmp si, di         ; Jump if end of string has been reached.

    je .exit

    jmp .mainLoop

  .error:

    stc                ; Set error (carry) flag.

    ret

  .exit:

    clc                ; Clear error (carry) flag.

    ret

atof_convertFractionalPart:

    fld1               ; Load 1 to TOS.  This will be the value of the decimal place.

  .mainLoop:

    cmp si, di         ; Jump if end of string has been reached.

    je .exit

    inc di             ; Move past the decimal point.

    cmp si, di         ; Jump if end of string has been reached.

    je .exit

    mov al, [bx + di]

    cmp al, '0'        ; Make sure character is a digit.

    jb .error

    cmp al, '9'

    ja .error

    fdiv dword [ten]   ; Next decimal place

    sub al, '0'

    mov ah, 0

    mov [tmp], ax

    ; Load digit, multiply by value for appropriate decimal place,

    ; and add to current total.

    fild  word [tmp]

    fmul  st0, st1

    faddp st2, st0

    jmp .mainLoop

  .error:

    stc           ; Set error (carry) flag.

    fstp st0    ; Pop top of fpu stack.

    ret

  .exit:

    clc              ; Clear error (carry) flag.

    fstp st0    ; Pop top of fpu stack.

    ret

;   *********************************************

;   ******* WINDOW DEFINITIONS AND DRAW *********

;   *********************************************

draw_window:

    mov  eax,48

    mov  ebx,3

    mov  ecx,sc

    mov  edx,sizeof.system_colors

    int  0x40

    mov  eax,12

    mov  ebx,1

    int  0x40

    mov  eax,0

    mov  ebx,200*65536+255

    mov  ecx,200*65536+180

    mov  edx,[sc.work]

    or   edx,0x33000000

    mov  edi,header

    int  0x40

    mov  eax,8

    mov  ebx,19*65536+28

    mov  ecx,49*65536+18

    mov  edx,6

    mov  esi,[sc.work_button]

    mov  edi,7

  newbutton:

    dec  edi

    jnz  no_new_row

    mov  edi,7

    mov  ebx,19*65536+28

    add  ecx,20*65536

  no_new_row:

    int  0x40

    add  ebx,30*65536

    inc  edx

    cmp  edx,39

    jbe  newbutton

    mcall  ,199*65536+28,49*65536+18,2                  ; 'C'

    mcall  ,220*65536+8,7*65536+8,3                     ; 'dec-bin-hex'

    mov  eax,4

    mov  ebx,27*65536+54

    mov  ecx,[sc.work_button_text]

    mov  edx,text

    mov  esi,33

  newline:

    int  0x40

    add  ebx,20

    add  edx,33

    cmp  [edx],byte 'x'

    jne  newline

    call print_display

    mov  eax,12

    mov  ebx,2

    int  0x40

    ret

print_display:

    pusha

    mcall 13,18*65536+210,19*65536+13,0xffffff

    mov  eax,4

    mov  ebx,135*65536+7

    mov  ecx,[sc.work_text]

    or   ecx,0x40000000

    mov  edx,calc

    mov  esi,1

    mov  edi,[sc.work]

    int  0x40

    mov  ebx,198*65536+8

    mov  edx,[display_type]

    shl  edx,2

    add  edx,display_type_text

    mov  esi,3

    mov  edi,[sc.work]

    int  0x40

    cmp  [dsign],byte '+'

    je   positive

    mov  ebx,23*65536+22

    mov  ecx,0x0

    mov  edx,dsign

    mov  esi,1

    int  0x40

positive:

    cmp  [display_type],0

    jne  no_display_decimal

    cmp  [decimal],0

    je   whole

    mov  ebx,180*65536+22

    mov  ecx,0x0

    mov  edx,dot

    mov  esi,1

    int  0x40

    mov  eax,47

    mov  ebx,10*65536

    mov  ecx,[integer]

    mov  edx,120*65536+22

    mov  esi,0x0

    int  0x40

    mov  ebx,6*65536

    mov  ecx,[decimal]

    mov  edx,187*65536+22

    mov  esi,0x0

    int  0x40

    popa

    ret

whole:

    mov  ebx,220*65536+22

    mov  ecx,0x0

    mov  edx,dot

    mov  esi,1

    int  0x40

    cmp  [integer],0

    je  null

    mov  eax,47

    mov  ebx,10*65536

    mov  ecx,[integer]

    mov  edx,160*65536+22

    mov  esi,0x0

    int  0x40

    popa

    ret

  no_display_decimal:

    cmp  [display_type],1

    jne  no_display_hexadecimal

    cmp  [integer],0

    je  null

    mov  eax,47

    mov  ebx,256+8*65536

    mov  ecx,[integer]

    mov  edx,173*65536+22

    mov  esi,0x0

    int  0x40

    popa

    ret

  no_display_hexadecimal:

    cmp  [integer],0

    je  null

    mov  eax,47

    mov  ebx,2*256+32*65536

    mov  ecx,[integer]

    mov  edx,32*65536+22

    mov  esi,0x0

    int  0x40

    popa

    ret

  null:

    mov  eax,47

    mov  ebx,1*65536

    mov  ecx,0

    mov  edx,214*65536+22

    mov  esi,0x0

    int  0x40

    popa

    ret

clear_all:

    pusha

    mov  [calc],' '

    mov  [integer],0

    mov  [decimal],0

    mov  [id],0

    mov  [dsign],byte '+'

    mov  esi,muuta0

    mov  edi,muuta1

    mov  ecx,18

    cld

    rep  movsb

    mov  esi,muuta0

    mov  edi,muuta2

    mov  ecx,18

    cld

    rep  movsb

    call print_display

    popa

    ret

;data

header db appname,version,0

display_type       dd  0    ; 0 = decimal, 1 = hexadecimal, 2= binary

entry_multiplier   dd  10

display_type_text  db  'dec hex bin'

dot     db  '.'

calc    db  ' '

integer dd    0

decimal dd    0

kymppi  dd   10

dsign:

muuta1  db   '+0000000000.000000'

muuta2  db   '+0000000000.000000'

muuta0  db   '+0000000000.000000'

text:

    db ' A    B    C    D    E    F    C '

    db ' 1    2    3    +   Int  Sin Asin'

    db ' 4    5    6    -   1/x  Cos Acos'

    db ' 7    8    9    /   x^2  Tan Atan'

    db '+/-   0    .    *   Sqr  Pi    = '

    db 'x'

asci:  db 49,50,51,52,53,54,55,56,57,48,43,61,45,42,47,44,46,27

butid: db 12,13,14,19,20,21,26,27,28,34,15,39,22,36,29,35,35,1

I_END:

sc     system_colors