Re: [hatari-devel] TT hardware memory information

[Thomas Huth <th.huth@xxxxxx>]

Am Fri, 11 Mar 2016 22:15:21 -0500
schrieb "Roger Burrows" <anodyne@xxxxxxxxxxxx>:

> Just posting some TT hardware info as it comes my way (as I try to
> get EmuTOS to run on real TT hardware).
> 
> ST-RAM memory support
> ---------------------
> There are 3 valid ST-RAM configurations:
> 1. 2MB: this is socketed memory on the motherboard
> 2. 4MB: this adds a 2MB daughter board above the socketed memory
> 3. 10MB: this adds an 8MB daughter board above the socketed memory
> 
> Memory controller values (i.e. what gets written to 0xff8001, and
> stored in the byte at 0x424 by TOS/EmuTOS):
> 1. 2MB: 0x05
> 2. 4MB: 0x05
> 3. 10MB: 0x0a

Thanks for the info! ... of course that raises now the question whether
this register does make any sense on the TT at all - if both 2 MB and 4
MB take the same value?

 Thomas