Suppose the time field of a file directory entry uses bits 0-4 for the seconds, bits 5-10 for the minutes, and bits 11-15 for the hours (24-hour clock). For example, the following binary value indicates a time of 02:16:07, in hh:mm:ss format: 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
i do not know how to for receiving a binary file time value in the AX register and how to display the time in hh:mm:ss format.
Well, it's going to be very hardware dependent. Are you sure the person who wrote the above partial code REALLY gave you ABSOLUTELY NO clues how to get user input? That there's absolutely *nothing* in your course notes to date about this?