Re: [hatari-devel] Memory bank configuration register

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

On 22/06/2013 18:21, Troed Sångberg wrote:
> On Sat, Jun 22, 2013 at 6:11 PM, Thomas Huth <th.huth@xxxxxx
> <mailto:th.huth@xxxxxx>> wrote:
>
>     Unless somebody implemented it and I didn't notice it, Hatari does not
>     emulate the behaviour of the memory bank configuration register
>     0xff8001 yet, so software that depends on this register and the
>     behaviour of the memory banks, might not work yet. When you enable the
>
>
> That would probably explain why I have code that works in Hatari but not
> on real hardware ;) Thanks for the heads up - I hadn't looked into why
> yet but I did suspect our memtop handling.
>
> /Troed

Note that in stMemory.c we set ff8001 to what the user chose as RAM size 
in Hatari configuration, unless another program modify this byte, you 
should be safe to read it to know how many RAM is "detected" on STF/STE.

So using ff8001 should give correct results under real HW or Hatari ; 
are you using another way to detect RAM size ? (writing at higher RAM 
location and checking if you read what you just wrote ?)

Nicolas