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- Subject: Re: [hatari-devel] _FRB cookie in Falcon emulation
- From: Uwe Seimet <Uwe.Seimet@xxxxxxxxx>
- Date: Fri, 1 Aug 2025 19:28:29 +0200
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Hi,
after exchanging an email with Thomas things have become clearer to me. I
understand the motivation for the _FRB change, but nevertheless there are
accelerators with Fast-RAM where a patched TOS is optional. This also
surprised me, but the information I got from a beta tester is very clear
on that. Without a patched TOS you have to run a program in the AUTO folder.
It's my fault that I missed this detail in the mailing list but I often only
look at the topics and did not notice that there might be a change related
to the _FRB. I would appreciate a respective note in the "Memory setup"
dialog, so that Hatari's behavior is more explicit.
After reading the current release notes I assume that Hatari does not
modify the TOS 4.04 behavior wrt to setting _ramtop and _ramvalid.
Best regards
Uwe
> Hi,
>
> > The cookie only gets installed when using TT RAM in Falcon mode. This is not
> > a configuration that is possible with a real stock Falcon, since that only
> > support memory up to 14 MB. The only way you could get something similar is
> > likely a CPU accelerator like the MightySonic, and I assume those install a
> > _FRB cookie, too. Otherwise your floppy disk access just cannot work in such
>
> No, accelerators do not necessarily do that. My beta testers are testing my
> software with various hardware accelerators. This is why I stumbled over
> this very recently.
> There is not always a patched TOS version. This is why in one of these
> setups a beta tester runs an AUTO folder tool provide for his hardware
> that deals with anything related to Fast-RAM.
>
> Best regards
>
> Uwe
> ~
>
>