SSEG SEGMENT STACK
    STK DB 20 DUP (0)
SSEG ENDS
DSEG SEGMENT
    ARG DW 7138H, 84A6H, 29EH
    MAX DW ?
    MIN DW ?
DSEG ENDS
CSEG SEGMENT
    ASSUME CS: CSEG, DS: DSEG, SS: SSEG
FMAX: MOV AX, DSEG
      MOV DS, AX
      MOV AX, SSEG
      MOV SS, AX
      LEA SI, ARG
      MOV AX, [SI]
      MOV BX, [SI+2]
      CMP AX, BX
      JAE FMAX1
      MOV AX, BX
FMAX1:CMP AX, [SI+4]
      JAE FMAX2
      MOV AX, [SI+4]
FMAX2:MOV MAX, AX
FMIN: MOV AX, [SI]
      MOV BX, [SI+2]
      CMP AX, BX
      JBE FMIN1
      MOV AX, BX
FMIN1:CMP AX, [SI+4]
      JBE FMIN2
      MOV AX, [SI+4]
      JMP EXIT
FMIN2:MOV MIN, AX 
      JMP EXIT
EXIT: MOV AH, 4CH
      INT 21H
CSEG ENDS
END FMAX