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4c.asm
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.MODEL SMALL
.STACK 100
.DATA
; =======================================================================================
; ====================== ERROR VARIABLES ================================================
; =======================================================================================
; TEMPORARY STACK CONTENT (STORES RETURN ADDRESS)
tempSP DW ?
; *************************************************************
; *************************************************************
; *************************************************************
; ERROR FLAG (0 - NONE, 1 - errorStr1, 2 - errorStr2, etc.)
errorFlag DB ?
; *************************************************************
; *************************************************************
; *************************************************************
; ERROR MESSAGE TEST
errorStr1 db "EXCEPTION : CALCULATION OUT OF BOUND (ADDITION EXCEEDS 42949672.95)!$",10,13,24
errorStr2 db "EXCEPTION : INPUT OPERAND HIGHER THAN SUPPORTED VALUE(42949672.95)!$",10,13,24
errorStr3 db "EXCEPTION : UNSUPPORTED INPUT SYMBOL!$",10,13,24
errorStr4 db "EXCEPTION : CALCULATION OUT OF BOUND (MULTIPLICATION OR POWER EXCEEDS 429496.7295)!$",10,13,24
errorStr5 db "EXCEPTION : CALCULATION OUT OF BOUND (SUBTRACTION RETURNS NEGATIVE VALUE)!$",10,13,24
errorStr6 db "EXCEPTION : MULTIPLE DOTS IN INPUT OPERAND!$",10,13,24
;errorStr7 db "EXCEPTION : NUMBERS AFTER DECIMAL DOT EXCEEDS 5!$",10,13,24 ; <<<<< SOLVED
; =======================================================================================
; ========================== EQUATION HANDLER VARIABLES =================================
; =======================================================================================
; -------- (ASCIITOHEX) ASCII INPUT TO HEX DOUBLE WORD --------
asciiIn DB "$$$$$$$$$$$" ; ASCII INPUT (UNTOUCHED)
; ASCII INPUT (ADDZEROS)
asciiInZ DB "$$$$$$$$$$$"
; ASCII INPUT (IN DECIMAL)
asciiInNum DB 10 DUP(?)
; HEX OUTPUT (IN HEX DOUBLE WORD)
asciiHex DW 0,0
; -------- (HEXTOASCII) HEX DOUBLE WORD TO ASCII OUTPUT -------
; HEX INPUT (IN HEX DOUBLE WORD)
hexIn DW ?,?
; HEX INPUT (TEMPORARY)
tempHex DW ?,?
; ASCII OUTPUT (IN STRINGS)
hexAscii DB 11 DUP("$")
; -------- (ADDDOT) ADD DECIMAL DOT TO FINAL RESULT------------
; *************************************************************
; *************************************************************
; *************************************************************
asciiDot DB 12 DUP("$") ; FINAL OUTPUT
; *************************************************************
; *************************************************************
; *************************************************************
; ------- (ASCIITOHEX,HEXTOASCII) SHARED ---------------------
; CURRENT INDEX OF ASCII INPUT IN DECIMAL STRING (EG '3' of '4321' IS INDEX 1)
zeroIndex DW ?
; PAIRS OF ZEROS IN DOUBLE WORD HEX, STARTING FROM 1,000,000,000 (15258,51712)
zeroPairs DW 15258,51712,1525,57600,152,38528,15,16960,1,34464,0,10000,0,1000,0,100,0,10,0,1
; ------------------ (IN2POST) INFIX TO POSTFIX ---------------
; *************************************************************
; *************************************************************
; *************************************************************
; INFIX LIST 126 CHARACTERS LIMIT
inList DB 127 DUP("$")
; *************************************************************
; *************************************************************
; *************************************************************
; POSTFIX LIST 126 CHARACTERS LIMIT
postList DB 127 DUP("$")
; DOT TRIGGER 2 (TRIGGER 1 IF DECIMAL DOT EXISTS) (0 - NONE, 1 - EXISTS)
dotTrigger2 DB ?
; ------------------ (POSTOPS) POSTFIX EVALUATION -------------
; DOT TRIGGER (TRIGGER 1 IF DECIMAL DOT EXISTS) (0 - NONE, 1 - EXISTS, MORE THAN 1 - ERROR)
dotTrigger DB ?
; TEMP OPERAND STRING (A DUPLICATION OF asciiIn FOR CLEAR BOUNDARIES BETWEEN 2 MAJOR FUNCTIONS)
tempOpStr DB "$$$$$$$$$$$"
; TEMP OPERAND HEX
tempOpHex DW 0,0
; COUNT DECIMAL AFTER DOT
countPostDot DB 0
; postList INDEX
postSI DW 0
; tempOpStr INDEX
tempDI DW 0
; TEMPORARY NUMBER
tempNum DW 0,0
; tempCX
tempCX DW ?
; ------------------ (dpConvert) DECIMAL POINT CONVERTER, CONVERT 0 OR 1 DP TO 2 DP (RUN TWICE FOR 0DP to 2DP) ----------------------
dpConv DW 0,0
; =======================================================================================
; ========================= OPERATOR VARIABLES ==========================================
; =======================================================================================
;GENERAL VARIABLES
num1 dw 0000H, 0000H
num2 dw 0000H, 0000H
ans dw 0000H, 0000H
;POWER FUNCTION VARIABLES
pow_counter dw ?
pow_of dw 0
temp_pow dw 0, 0
;Division variables
tens dw 10d, 100d, 1000d
rmdr dw ?
temp_rmdr dw ?
temp_dp dw 0000h, 0000h
dp db 0, 0
; SQRT variables
int32 dd 0
squareRoot dw ?
; =======================================================================================
; ========================= OLD CODES VARIABLES =========================================
; =======================================================================================
;-------------------------------------------LOGO----------------------------------------
logo01 db " *@.@@ @@ @*@"
db 10,13," @@@ @@@("
db "$"
logo02 db 10,13," @@@ @/("
db 10,13," @ @@ %& @."
db "$"
logo03 db 10,13," @ @ @ @,"
db 10,13," @@ # @ @@ *@."
db "$"
logo04 db 10,13," @ @ @ @ @ @@ "
db 10,13," @ , : @@"
db "$"
logo05 db 10,13," &@ & @ @*"
db 10,13," @ % @ &,"
db "$"
logo06 db 10,13," @@ % @ @."
db 10,13," @ *. @ @@"
db "$"
logo07 db 10,13," ( , ( @/"
db 10,13," @ , , @@"
db "$"
logo08 db 10,13," @@ @ ( @"
db 10,13," @ < ( @"
db "$"
logo09 db 10,13," @@ & @ @"
db 10,13," ,@ / @ @@"
db "$"
logo10 db 10,13," *@ / \ @@"
db 10,13," %@ / # @@"
db "$"
logo11 db 10,13," @ . WOLFE'S CALCULATOR # @@"
db 10,13," @ @@@"
db "$"
logo12 db 10,13," . @( @@"
; db 10,13," Press any key to continue..."
db 10,13," *@.@@ @@ @@ @@ @@@*@"
db "$"
;---------------------------------------------------------------------------------------
; =======================================================================================
; ================================ UI VARIABLES =========================================
; =======================================================================================
; Share variable --------------------------------------------------------------
e db "2.718" ; value of exp
pi db "3.142" ; value of pi
; Mouse Variables -------------------------------------------------------------
Mode db 0 ; 0 - keyboard, 1 - mouse
; constant for dx
start_Row db 38h ; top left corner as starting box edge
end_Row db 47h ; end corner
; constant for cx
start_Col dw 0010h
end_Col dw 0067h ;0067h
; Calculator UI ---------------------------------------------------------------
File db "Calc_UI.txt", 0 ; CALCULATOR UI with symbols
Testing db "Txt.txt", 0 ; for testing
Handle dw ?
ScanLength dw 1C0h ; 448d
scanf db 1000 dup("$") ; collect lines to print
; Change Row and Column area here ---------------------------------------------
Row dw 0200h ; Updates row positions (buttons)
Col dw 000Ah ; Updates column positions (buttons)
Update_Col db ? ; Update display to left
String_x db 4Ah ; Every key registered will shift to left
String_y db 03h ; Constant Row
; Button Variable -------------------------------------------------------------
Input db ? ; enter keys for input 1 byte
upperIn db ? ; keys that stored in AH
Bool db ? ; Constraint checking
; String Variable -------------------------------------------------------------
tempStr db 71 dup("$") ; temporarily holds string
String db 101 dup("$") ; accept keys
inLimit dw 70d ; limit for input, word size for 16 bit reg
; Pointer
StringPtr dw ? ; String Pointer
inPtr dw ? ; input string pointer
tPtr db ? ; pointer that indicates length of a term
; Bool
DigitF db ? ; bool variable for checking zero as front digit
opF db 1 ; number of operand typed only once per term
; Error display ---------------------------------------------------------------
Math_Err db "Math Error!$"
Syntax_Err db "Syntax Error!$"
; Symbol UI for frame ---------------------------------------------------------
ScreenUI db "Calculator", 13, 10, 201d, 4Dh dup(205d), 187d, 13, 10
db 186d, 4Dh dup(20h), 186d, 13, 10
db 186d, 4Dh dup(20h), 186d, 13, 10
db 186d, 4Dh dup(20h), 186d, 13, 10
db 200d, 4Dh dup(205d), 188d, 13, 10, 41h dup(20h), "Mode:$"
str0 db "Keyboard$"
str1 db "Mouse $"
; View Textfile for button position -------------------------------------------
array_button dw 1F73h, 075Eh, 264Ch, 011Bh, 326Dh
dw 1071h, 1F53h, 2E43h, 1454h, 2348h
dw 1749h, 2E63h, 2247h, 0E08h, 352Fh
dw 1265h, 0837h, 0938h, 0A39h, 2D78h
dw 1970h, 0534h, 0635h, 0736h, 0C2Dh
dw 0221h, 0231h, 0332h, 0433h, 0D2Bh
dw 0A28h, 0B29h, 0B30h, 342Eh, 1C0Dh
; BH = 8F, 80h causes blinking screen
; 25 row and 80 column max
; max cursor range cx: column 027Fh dx: row 0C7h
; FACTORIAL, M+, SIN, COS, TAN
; remember to enable sqrt
.CODE
MAIN PROC
MOV AX,@DATA
MOV DS,AX
; START SETUPS--------------------------------------
call cls
call _Calc_UI
call _Calculator ; Begins here
EXIT:
CALL _logo
MOV AX,4C00H
INT 21H
MAIN ENDP
; ============================ UI-OPERATION BRIDGE ===============================
UIMERGE PROC
XOR CX,CX
XOR BX,BX
XOR DI,DI
MOV CX,70
MERGE_INTRANSFER: ; TRANSFER String TO inList
MOV BL,String[DI] ; TEMPORARY TESTING
MOV inList[DI],BL
INC DI
LOOP MERGE_INTRANSFER
CALL CLREG
CALL IN2POST
CALL POSTOPS
CALL HEXTOASCII
CALL ADDDOT
std
xor si, si
LEN:
mov al, asciiDot[si]
inc si
cmp al, "$"
jne LEN
mov bx, si
sub bx, 2
mov dh, String_y
mov dl, String_x
inc dh
sub dl, bl
call cursor
LEA DX,asciiDot
call print
CALL CLREG
cmp Mode, 0 ; FIX PROBLEM ERHERE
jz KeyB
Buffering:
mov ax, 3 ; get buttons
int 33h
test bl,1 ; AND bits with 0000 0001
jnz Return
test bl,2 ; AND bits with 0000 0010
jnz Return
jmp Buffering
KeyB:
mov ah, 1
int 21h
Return:
call clrEntry
RET
UIMERGE ENDP
; ====================== ERROR ================================================
ERROR_MSG PROC
XOR BX,BX
MOV BL,errorFlag
CMP BX,1
JE ERROR_MSG1
CMP BX,2
JE ERROR_MSG2
CMP BX,3
JE ERROR_MSG3
CMP BX,4
JE ERROR_MSG4
CMP BX,5
JE ERROR_MSG5
CMP BX,6
JE ERROR_MSG6
;CMP BX,7
;JE ERROR_MSG7
ERROR_MSG1:
mov ah, 09H
lea dx, errorStr1
int 21H
JMP ERROR_EXIT
ERROR_MSG2:
mov ah, 09H
lea dx, errorStr2
int 21H
JMP ERROR_EXIT
ERROR_MSG3:
mov ah, 09H
lea dx, errorStr3
int 21H
JMP ERROR_EXIT
ERROR_MSG4:
mov ah, 09H
lea dx, errorStr4
int 21H
JMP ERROR_EXIT
ERROR_MSG5:
mov ah, 09H
lea dx, errorStr5
int 21H
JMP ERROR_EXIT
ERROR_MSG6:
mov ah, 09H
lea dx, errorStr6
int 21H
JMP ERROR_EXIT
;ERROR_MSG7:
;mov ah, 09H
;lea dx, errorStr7
;int 21H
;JMP ERROR_EXIT
ERROR_EXIT:
ret
ERROR_MSG ENDP
; CLEAR ALL GENERAL REGISTERS ------------------------------------------------------------------
CLREG PROC
XOR AX,AX
XOR BX,BX
XOR CX,CX
XOR DX,DX
XOR SI,SI
XOR DI,DI
XOR BP,BP
RET
CLREG ENDP
; =========================== EQUATION HANDLER ======================================
; INFIX TO POSTFIX GENERAL FUNCTION
IN2POST PROC
CALL CLREG
MOV tempSP,SP
XOR AX,AX
MOV AL,40
PUSH AX ; PUSH INITIAL PARENTHESIS "("
XOR AX,AX
MOV dotTrigger2,AL
MOV errorFlag,AL
MOV SI,0
MOV DI,0
; GENERAL CHAR CHECKING
I2P_L1:
MOV AL,inList[SI]
CMP AX,36 ; $
JE E_I2P_RIGHTP
CMP AX,32 ; space
JE E_I2P_SKIP
CMP AX,40 ; (
JE E_I2P_LEFTP
CMP AX,41 ; )
JE E_I2P_RIGHTP
CMP AX,43 ; +
JE E_I2P_OPERATOR
CMP AX,45 ; -
JE E_I2P_OPERATOR
CMP AX,120 ; x
JE E_I2P_OPERATOR
CMP AX,33 ; !
JE E_I2P_OPERATOR
CMP AX,47 ; /
JE E_I2P_OPERATOR
CMP AX,115 ; s (squared)
JE E_I2P_OPERATOR
CMP AX,94 ; ^ (power)
JE E_I2P_OPERATOR
CMP AX,113 ; q (square root)
JE E_I2P_OPERATOR
CMP AX,46 ; . (decimal dot)
JE E_I2P_OPERAND
CMP AX,48 ; operands
JB E_I2P_INVALID2
CMP AX,57 ; operands
JA E_I2P_INVALID2
JMP I2P_OPERAND
E_I2P_RIGHTP:
JMP I2P_RIGHTP
E_I2P_SKIP:
JMP I2P_SKIP
E_I2P_LEFTP:
JMP I2P_LEFTP
E_I2P_OPERATOR:
JMP I2P_OPERATOR
E_I2P_OPERAND:
JMP I2P_OPERAND
E_I2P_INVALID2:
JMP I2P_INVALID2
I2P_OPERAND:
XOR BP,BP
MOV BL,123 ; ADD OPERAND OPENING {
MOV postList[DI],BL
INC DI ; FORWARD postList
I2P_OPERAND2:
MOV postList[DI],AL ; ADD OPERAND
INC DI ; FORWARD postList
INC SI ; FORWARD inList
MOV AL,inList[SI]
INC BP ; BP IS OPERAND CURRENT LENGTH (INCLUDING DOT)
XOR DX,DX
MOV DL,dotTrigger2
CMP DX,1
JE I2P_OPERANDLENGTH2
; I2P_OPERANDLENGTH1
CMP BP,10
JA E_I2P_INVALID
JMP I2P_OPERAND21
I2P_OPERANDLENGTH2:
CMP BP,11
JA E_I2P_INVALID
JMP I2P_OPERAND21
E_I2P_INVALID:
JMP I2P_INVALID
; CHECK NEXT CHAR FOR OPERAND
I2P_OPERAND21:
CMP AX,46 ; dot
JE I2P_OPERANDDOT
CMP AX,48 ; operands
JB I2P_OPERANDOUT
CMP AX,57 ; operands
JA I2P_OPERANDOUT
JMP I2P_OPERAND2
I2P_OPERANDDOT:
XOR DX,DX
MOV DL,1
MOV dotTrigger2,DL
JMP I2P_OPERAND2
I2P_OPERANDOUT:
MOV BL,125 ; ADD OPERAND CLOSING }
MOV postList[DI],BL
INC DI ; FORWARD postList
JMP I2P_L1
I2P_LEFTP:
PUSH AX
INC SI ; FORWARD inList
JMP I2P_L1
I2P_RIGHTP:
POP BX
CMP BX,40 ; CHECK FOR (
JE I2P_RIGHTPOUT
MOV postList[DI],BL ; ADD OPERATOR TO postList
INC DI ; FORWARD postList
JMP I2P_RIGHTP
I2P_RIGHTPOUT: ; IF ( THEN EXIT LOOP
CMP AX,36 ; IF $ THEN EXIT MAIN LOOP
JE E_I2P_EXIT
INC SI ; FORWARD inList
JMP I2P_L1
E_I2P_EXIT:
JMP I2P_EXIT
I2P_OPERATOR:
POP BX
CMP AX,115 ; s
JE I2P_PREC11
CMP AX,94 ; ^
JE I2P_PREC11
CMP AX,113 ; q
JE I2P_PREC11
CMP AX,120 ; x
JE I2P_PREC10
CMP AX,33 ; !
JE I2P_PREC10
CMP AX,47 ; /
JE I2P_PREC10
CMP AX,43 ; +
JE I2P_PREC09
CMP AX,45 ; -
JE I2P_PREC09
I2P_PREC09: ; PRECEDENCE LEVEL 09 : + -
CMP BX,43
JE I2P_APPEND
CMP BX,45
JE I2P_APPEND
I2P_PREC10: ; PRECEDENCE LEVEL 10 : x ! /
CMP BX,120
JE I2P_APPEND
CMP BX,33
JE I2P_APPEND
CMP BX,47
JE I2P_APPEND
I2P_PREC11: ; PRECEDENCE LEVEL 11 : s ^ q
CMP BX,115
JE I2P_APPEND
CMP BX,94
JE I2P_APPEND
CMP BX,113
JE I2P_APPEND
PUSH BX
JMP I2P_OPERATOROUT
I2P_APPEND:
MOV postList[DI],BL
INC DI
JMP I2P_OPERATOR
I2P_OPERATOROUT:
CMP AX,115 ; s
JE I2P_SQUARED
CMP AX,113 ; q
JE I2P_SQRT
CMP AX,33 ; !
JE I2P_FACTORIAL
JMP I2P_OPERATOROUT2
I2P_SQUARED: ; ADD {2} TO postList FOR SQUARED
MOV DX,123
MOV postList[DI],DL
INC DI
MOV DX,50 ; 2 IN ASCII
MOV postList[DI],DL
INC DI
MOV DX,125
MOV postList[DI],DL
INC DI
JMP I2P_OPERATOROUT2
I2P_SQRT: ; ADD {2} TO postList FOR SQUARED and FACTORIAL (2 IS ACTUALLY A DUMB VALUE)
MOV DX,123
MOV postList[DI],DL
INC DI
MOV DX,50 ; 2 IN ASCII
MOV postList[DI],DL
INC DI
MOV DX,125
MOV postList[DI],DL
INC DI
JMP I2P_OPERATOROUT2
I2P_FACTORIAL: ; ADD {2} TO postList FOR SQUARED and FACTORIAL (2 IS ACTUALLY A DUMB VALUE)
MOV DX,123
MOV postList[DI],DL
INC DI
MOV DX,50 ; 2 IN ASCII
MOV postList[DI],DL
INC DI
MOV DX,125
MOV postList[DI],DL
INC DI
JMP I2P_OPERATOROUT2
I2P_OPERATOROUT2:
PUSH AX
INC SI
JMP I2P_L1
I2P_SKIP:
INC SI
JMP I2P_L1
I2P_INVALID:
mov ax,2
mov errorFlag,al
MOV SP,tempSP
JMP I2P_EXIT
I2P_INVALID2:
mov ax,3
mov errorFlag,al
MOV SP,tempSP
JMP I2P_EXIT
I2P_EXIT:
; CLEAR inList TO GET READY FOR REUSE
MOV CX,127
MOV SI,0
MOV AX,36
I2P_CLIN:
MOV inList[SI],AL
INC SI
LOOP I2P_CLIN
CALL CLREG
RET
IN2POST ENDP
; POSTFIX EVALUATION GENERAL FUNCTION
; (ORGANISATION OF OPERATIONS)
POSTOPS PROC
CALL CLREG
MOV tempSP,SP
MOV SI,0
MOV postSI,SI
PO_L1: ; IMPORTANT : FROM HERE ON DO NOT CLEAR AX AND SI
XOR AH,AH
MOV errorFlag,AH
MOV SI,postSI
MOV AL,postList[SI]
CMP AX,36 ; $
JE E_PO_END
CMP AX,43 ; +
JE E_PO_OPERATOR
CMP AX,45 ; -
JE E_PO_OPERATOR
CMP AX,120 ; x
JE E_PO_OPERATOR
CMP AX,33 ; !
JE E_PO_OPERATOR
CMP AX,47 ; /
JE E_PO_OPERATOR
CMP AX,115 ; s (squared)
JE E_PO_OPERATOR
CMP AX,94 ; ^ (power)
JE E_PO_OPERATOR
CMP AX,113 ; q (square root)
JE E_PO_OPERATOR
JMP PO_OPENING
E_PO_END:
JMP PO_END
E_PO_OPERATOR:
JMP PO_OPERATOR
; WILL MEET OPERAND OPENING {
; HENCE,
PO_OPENING:
MOV CX,11
XOR DI,DI
MOV BX,36
PO_CLEARSTR1: ; CLEAR tempOpStr
MOV tempOpStr[DI],BL
INC DI
LOOP PO_CLEARSTR1
XOR DX,DX ; CLEAR tempOpHex
MOV tempOpHex[0],DX
MOV tempOpHex[2],DX
; DO NOT USE BX OTHER THAN countPostDot
MOV DI,0
MOV tempDI,DI
XOR BX,BX
XOR DX,DX
MOV dotTrigger,DL ; RESET DOT TRIGGER (0 - NONE, 1 - EXISTS, MORE THAN 1 - ERROR)
MOV countPostDot,DL ; RESET DECIMAL COUNT AFTER DOT
INC SI ; SKIP OPERAND OPENING {
MOV postSI,SI
PO_NUMBERS:
XOR AH,AH
MOV SI,postSI
MOV AL,postList[SI]
; CHECK FOR } and .
CMP AX,125 ; OPERAND CLOSING }
JE PO_CLOSING
CMP AX,46 ; DECIMAL DOT .
JE PO_DOT
; IF NOT } AND .
MOV DI,tempDI
MOV tempOpStr[DI],AL; INSERT TO TEMP OPERAND STRING
INC DI
MOV tempDI,DI
XOR DX,DX
MOV DL,dotTrigger
CMP DX,0
JBE PO_SKIPADDDOT
INC BL
MOV countPostDot,BL ; ADD COUNT FOR DECIMAL AFTER DOT
PO_SKIPADDDOT: ; NO DECIMAL
INC SI ; FORWARD postList
MOV postSI,SI
JMP PO_NUMBERS
PO_DOT:
XOR DX,DX
MOV DL,dotTrigger
CMP DL,0 ; DETECTS MULTIPLE DOTS AND PROMPT ERROR
JA E_PO_DOTERROR
MOV DX,1 ; DOT DETECTED
MOV dotTrigger,DL
XOR DX,DX
INC SI ; FORWARD postList
MOV postSI,SI
JMP PO_NUMBERS
E_PO_DOTERROR:
XOR DX,DX
MOV DL,6
MOV errorFlag,DL
JMP PO_ERROR
PO_CLOSING:
; TRANSFER TO asciiIn
MOV CX,11
XOR DI,DI
XOR DX,DX
0
PO_TRANSFERSTR1: ; TRANSFER tempOpStr TO asciiIn
MOV BL,tempOpStr[DI]
MOV asciiIn[DI],BL
INC DI
LOOP PO_TRANSFERSTR1
CALL ASCIITOHEX ; ALL REGISTERS ARE CLEARED RIGHT AFTER CALL
MOV DX,asciiHex[0]
MOV tempOpHex[0],DX
MOV DX,asciiHex[2]
MOV tempOpHex[2],DX
XOR DX,DX
MOV DX,tempOpHex[0]
MOV dpConv[0],DX
MOV DX,tempOpHex[2]
MOV dpConv[2],DX
XOR DX,DX
MOV BL,countPostDot
CMP BL,0 ; NO DP
JE PO_0DP
CMP BL,1 ; 1 DP
JE PO_1DP
CMP BL,2 ; 2 DP
JE PO_2DP
; CMP BL,5 ; MORE THAN 5 DIGITS
; JA E_PO_DECIMALERROR
JMP PO_xDP
; E_PO_DECIMALERROR:
; XOR DX,DX
; MOV DL,7
; MOV errorFlag,DL
; JMP PO_ERROR
PO_xDP: ; MORE THAN 3 DIGITS
XOR CX,CX
MOV tempCX,CX
SUB BL,2
MOV CL,BL
MOV tempCX,CX
PO_xDPL1:
MOV tempCX,CX
MOV DX,tempOpHex[0]
MOV num1[0],DX
MOV DX,tempOpHex[2]
MOV num1[2],DX
XOR DX,DX
MOV num2[0],DX
MOV num2[2],1000
CALL division
MOV DX,ans[0]
MOV tempOpHex[0],DX
MOV DX,ans[2]
MOV tempOpHex[2],DX
XOR DX,DX
MOV CX,tempCX
LOOP PO_xDPL1
JMP PO_xDPEXIT
PO_0DP: ; ADD ZEROS (CONVERT TO 2DP)
CALL dpConvert
xor dx,dx
mov dl,errorFlag
cmp dl,0
jne e_po_error
jmp PO_1DP
e_po_error:
jmp po_error
PO_1DP: ; ADD ZEROS (CONVERT TO 2DP)
CALL dpConvert
xor dx,dx
mov dl,errorFlag
cmp dl,0
jne e_po_error
PO_2DP: ; PUSH TO STACK (TWICE)
MOV DX,dpConv[0]
MOV tempOpHex[0],DX
MOV DX,dpConv[2]
MOV tempOpHex[2],DX
XOR DX,DX
PO_xDPEXIT:
MOV DX,tempOpHex[2]
PUSH DX
MOV DX,tempOpHex[0]
PUSH DX
MOV SI,postSI
INC SI ; FORWARD postList
MOV postSI,SI
JMP PO_L1
PO_OPERATOR:
XOR BX,BX
POP BX
MOV num2[0],BX
XOR BX,BX
POP BX
MOV num2[2],BX
XOR BX,BX
POP BX
MOV num1[0],BX
XOR BX,BX
POP BX
MOV num1[2],BX
XOR BX,BX
CMP AX,43 ; +
JE PO_ADDITION
CMP AX,45 ; -
JE PO_SUBTRACT
CMP AX,120 ; x
JE PO_MULTIPLY
CMP AX,33 ; !
JE PO_FACTORIAL
CMP AX,47 ; /
JE E_PO_DIVISION
CMP AX,115 ; s (squared)
JE E_PO_POWER
CMP AX,94 ; ^ (power)
JE E_PO_POWER
CMP AX,113 ; q (square root)
JE E_PO_SQRT
JMP PO_ADDITION
E_PO_SQRT:
JMP PO_SQRT
E_PO_DIVISION:
JMP PO_DIVISION
E_PO_POWER:
JMP PO_POWER
; FROM HERE ON AX IS REPLACED BY OPERATOR FUNCTIONS
PO_ADDITION:
CALL addition
JMP PO_OPERATOROUT
PO_SUBTRACT:
CALL subtract