Re: [hatari-devel] CRC checks and TOS 2.08 (was: Fix display of Atari logo with extended VDI resolutions)

[Thomas Huth <th.huth@xxxxxx>]

Am Sun, 27 Nov 2016 10:29:59 +0100
schrieb Thorsten Otto <admin@xxxxxxxxxxx>:

> On Sunday 27 November 2016 09:16:48 Thomas Huth wrote:
> > Did you get to the
> > Desktop?  
> 
> Yes, at least in MSTE mode. You might have to choose mono resolution,
> i could not get to work it in color modes because the BIOS sets ST
> high resolution quite early.

Yes, that TOS seems to only support ST mono, so of course I selected
mono, too.
I noticed that I get a little bit further if I use a 68030 CPU instead
of a plain 68000 ... but it still crashes later... don't know why...

> It even showed up the contents of the
> internal cartridge (the one in the ROM, not the one at $FA0000). Im
> not sure though what those program are supposed to do.

If I've read that right, the ROM contains a program that can be used
for transfering files via the serial port - that's needed because the
ST-BOOK did not have a floppy drive anymore.

> >The TOS currently rather crashes in plain Mega-ST
> >mode because it tries to access the 0xff9200 register, which
> >indicates that this machine had DIP-switches, too.  
> 
> Thats true. Although the values read from the DIP-Switches seem to
> have total different meanings than the ones from TT. Naturally, they
> are not emulated currently, but that does not seem to cause problems.

I still think that the ST-BOOK is more compatible to the normal ST than
STE ... so maybe we should just patch out that access to 0xff9200, so
it can run in megast mode, too?

 Thomas