kernel/shell/clock.asm

   1 ;----------------------------------------------------------;
   2 ; BOS kernel                     Christoffer Bubach, 2005. ;
   3 ;----------------------------------------------------------;
   4 ;                                                          ;
   5 ;        functions to print date and time.                 ;
   6 ;                                                          ;
   7 ;----------------------------------------------------------;
   8
   9 ;------------------;
  10 ;    variables     ;
  11 ;------------------;
  12      msg_time        db   13,10,'   Time: ',0
  13      msg_date        db   13,10,'   Date: ',0
  14
  15
  16 ;------------------------------------------------------;
  17 ;   date, prints current date and goes back to the     ;
  18 ;   prompt. swedish i.e. normal :) format              ;
  19 ;------------------------------------------------------;
  20 print_date:
  21           push    eax
  22           push    ebx
  23           push    esi
  24
  25           mov     esi, msg_date
  26           mov     bl, 0x07
  27           call    print                               ; text.inc
  28           call    get_cmos_data                       ; cmos.inc
  29
  30           mov     al, [century]                       ; cmos.inc
  31           call    BCD2ascii
  32           push    eax
  33           mov     bh, 0x07
  34           mov     bl, al
  35           call    print_char
  36           pop     eax
  37           mov     bl, ah
  38           call    print_char
  39
  40           mov     al, [year]
  41           call    BCD2ascii
  42           push    eax
  43           mov     bl, al
  44           call    print_char
  45           pop     eax
  46           mov     bl, ah
  47           call    print_char
  48
  49           mov     bl, ':'
  50           call    print_char
  51
  52           mov     al, [month]
  53           call    BCD2ascii
  54           push    eax
  55           mov     bl, al
  56           call    print_char
  57           pop     eax
  58           mov     bl, ah
  59           call    print_char
  60
  61           mov     bl, ':'
  62           call    print_char
  63
  64           mov     al, [day]
  65           call    BCD2ascii
  66           push    eax
  67           mov     bl, al
  68           call    print_char
  69           pop     eax
  70           mov     bl, ah
  71           call    print_char
  72
  73           pop     esi
  74           pop     ebx
  75           pop     eax
  76           ret
  77
  78
  79 ;------------------------------------------------------;
  80 ;   time, prints current time and goes back to the     ;
  81 ;   prompt.                                            ;
  82 ;------------------------------------------------------;
  83 print_time:
  84           push    eax
  85           push    ebx
  86           push    esi
  87
  88           mov     esi, msg_time
  89           mov     bl, 0x07
  90           call    print                               ; text.inc
  91           call    get_cmos_data                       ; cmos.inc
  92           mov     al, [hour]                          ; cmos.inc
  93           call    BCD2ascii
  94           push    eax
  95           mov     bh, 0x07
  96           mov     bl, al
  97           call    print_char
  98           pop     eax
  99           mov     bl, ah
 100           call    print_char
 101
 102           mov     bl, ':'
 103           call    print_char
 104
 105           mov     al, [minute]
 106           call    BCD2ascii
 107           push    eax
 108           mov     bl, al
 109           call    print_char
 110           pop     eax
 111           mov     bl, ah
 112           call    print_char
 113
 114           mov     bl, ':'
 115           call    print_char
 116
 117           mov     al, [second]
 118           call    BCD2ascii
 119           push    eax
 120           mov     bl, al
 121           call    print_char
 122           pop     eax
 123           mov     bl, ah
 124           call    print_char
 125
 126           pop     esi
 127           pop     ebx
 128           pop     eax
 129           ret