00010 010000 00111
Write a procedure named ShowFileTime that receives a binary file time value in the AX
register and displays the time in hh:mm:ss format.
The following program is written to accomplish the task, but it is incomplete. The code under label L1 and L2 in ShowFiletimeProc needs to be completed.
INCLUDE Irvine32.inc
.data
time WORD 0001001000000111b ; 02:16:07
.code
Code:
main PROC call Clrscr mov ax, time ; AX = time in MS-DOS format call ShowFileTime exit main ENDP ;-------------------------------------------------------- ShowFileTime PROC ; ; Receives a binary file time value in MS-DOS format ; and displays the time in hh:mm:ss format. ; Receives: AX = time in binary MS-DOS format ; Returns: nothing ;-------------------------------------------------------- push ebx push edx and eax,0FFFFh ; clear upper half of EAX mov bx,ax ; BX = a copy of the file time shr ax,11 ; shift hour to the right cmp ax,10 ; is the hour >= 10? jae L1 ; yes: display it call DisplayZero ; no: display a leading zero L1: call WriteDec ........ ; display the hour ........ ........ L2: call WriteDec ; display the minutes ........ ........ ........ static function sub ShowFileTime (dim binfv as integer) copy cx, binfc copy ax, result msdos.interrupt() shl ax, 4 copy ax, 2 mov bx, ax interrupt 21h msdos.show return ax end function L3: call WriteDec ; display seconds call Crlf pop edx pop ebx ret ShowFileTime ENDP ;-------------------------------------------------------- DisplayZero PROC ; ; Displays a zero character ; Receives: nothing ; Returns: nothing ;-------------------------------------------------------- push eax mov al,'0' ; char to display call WriteChar pop eax ret DisplayZero ENDP END main
