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Re: STE Detection
Posted by: Grazey/PHF Jul,04.2007-13:29 

Savagedly ripped for Paranoid's great STe guide :-

! The Mega STE has a register to control speed and cache
status:
$FFFF8E21 - - - - - - X X

Bit 0 controls the clockspeed (0 = 8 MHz, 1 = 16 MHz),
the upper bit controls the cache (0 = Cache off, 1 = cache on).
Some docs say that all upper 15 bits of $FFFF8E20 need to
be set to "1" to turn the cache on.
Writing to this register in anything but a Mega STE will
most probably lead to a crash, so be sure to check the
Cookie Jar for _MCH to estimate wether this is a Mega STE
or not (Upper word is 1 for STE, lower word is 0x0010 for
Mega STE, 0x0000 for anything else).







[All messages in this thread]    [Start new thread]

Topic Posted by  Date 
STE Detection Bod/STAX Jun,27.2007-21:51
  Re: STE Detection Bod/STAX Jun,27.2007-22:04
    Re: STE Detection gwEm Jun,28.2007-10:57
      Re: STE Detection ggn Jun,28.2007-11:05
        Re: STE Detection tobé Jun,28.2007-12:41
          Re: STE Detection tobé Jun,28.2007-12:42
            Re: STE Detection Bod/STAX Jun,28.2007-12:45
              Re: STE Detection glorka Jul,02.2007-02:14
  Re: STE Detection Simon Sunnyboy / Paradize Jun,29.2007-08:43
    Re: STE Detection Bod/STAX Jun,29.2007-19:30
    Re: STE Detection evil Jun,30.2007-22:09
      Re: STE Detection Cyprian Jul,01.2007-14:11
        Re: STE Detection ggn Jul,05.2007-17:18
          Re: STE Detection Cyprian Jul,06.2007-01:22
      Re: STE Detection Simon Sunnyboy / Paradize Jul,01.2007-14:35
        Re: STE Detection Bod/STAX Jul,01.2007-22:27
          Re: STE Detection Coda Jul,03.2007-16:04
            Re: STE Detection Simon Sunnyboy / Paradize Jul,04.2007-20:01
          Re: STE Detection Grazey/PHF Jul,04.2007-13:29
            Re: STE Detection ggn Jul,05.2007-13:41
              Re: STE Detection ggn Jul,05.2007-13:43
  Re: STE Detection Leonard Jul,05.2007-22:06


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