LAB6 RAN

; Lab6.asm

    .MODEL SMALL
    .STACK 100h
    .DATA
OptionInsertion     DB 13,10,'Enter 1.Push 2.Pop 3.Min 4.Max 5.Exit',13,10,'$'
PushPrompt          DB 13,10,'Enter a number to push: ','$'
PopPrompt           DB 13,10,'Number Popped: X','$'
MaxPrompt           DB 13,10,'Max Number: X','$'
MinPrompt           DB 13,10,'Min Number: X','$'
Goodbye             DB 13,10,'Program ended, Good bye!',13,10,'$'
choice              DB ?
stackSize           DW ?
tmp                 DB ?
Two                 DB 2
     .CODE
ProgStart:
     MOV AX,@DATA
     MOV DS,AX
     MOV stackSize, SP
Start:
;set print options and print OptionInsertion
     MOV AH,9
     MOV DX,OFFSET OptionInsertion
     INT 21h

;set get character option and put it into "choice"
     MOV AH,1
     INT 21h
     MOV choice, AL
;get to the relevant place, in accordance to the users choice

;CHECK IF 1 WAS CHOSEN
    CMP choice, '1'
    JNE pop_chosen
;AFTER CHOSING 1.PUSH
push_chosen:
    MOV AH,9
    MOV DX,OFFSET PushPrompt
    INT 21h
;set get character option
    MOV AH,1
    INT 21h
    MOV AH, 0
    PUSH AX
    JMP start

;CHECK IF 2 WAS CHOSEN
pop_chosen:
    CMP choice, '2'
    JNE min_chosen
;AFTER CHOSING 2.POP
    POP AX
    MOV PopPrompt[17],AL
    MOV AH,9
    MOV DX,OFFSET PopPrompt;display_result
    INT 21h
    JMP start

;CHECK IF 3 WAS CHOSEN
min_chosen:
    CMP choice, '3'
    JNE max_chosen
;AFTER CHOSING 3.MIN
    MOV AX, stackSize
    SUB AX, SP
    DIV Two
    MOV CX, AX
    MOV BP, SP
    MOV tmp, '9'
minLoop:
    MOV BX, [BP]
    CMP BL, tmp
    JG notlower
    MOV tmp, BL
notlower:
     ADD BP, 2
     Loop minLoop
     MOV AL, tmp
     MOV MinPrompt[14],AL
     MOV AH,9
     MOV DX,OFFSET MinPrompt ;display_result
     INT 21h
     JMP start

;CHECK IF 4 WAS CHOSEN
max_chosen:
    CMP choice, '4'
    JNE EndProgram
;AFTER CHOSING 4.MAX
    MOV AX, stackSize
    SUB AX, SP
    DIV Two
    MOV CX, AX
     MOV BP, SP
     MOV tmp, '0'
maxLoop:
    MOV BX, [BP]
     CMP BL, tmp
     JL nothiger
     MOV tmp, BL
nothiger:
     ADD BP, 2
     Loop maxLoop
     MOV AL, tmp
     MOV MaxPrompt[14],AL
     MOV AH,9
     MOV DX,OFFSET MaxPrompt;display_result
     INT 21h
     JMP start

;AFTER CHOSING 5.END
EndProgram:
; Print bye, Set terminate option and return to DOS
     MOV AH,9
     MOV DX,OFFSET Goodbye
     INT 21h
     MOV AH,4Ch
     INT 21h
    END ProgStart