Re: [hatari-devel] Hatari clock question

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 19.8.2022 23.34, Christian Zietz wrote:
> > * Bug #2) Machines with no RTC i.e. ST & STE, which were supposed to
> > initialize their clocks from host, show 2021-07-19, when host date is
> > 2022-08-19, i.e. their month & year are both off by one.  EmuTOS or
> > Hatari issue?
> >
> >     - When using TOS v2 instead of EmuTOS, date is 1991-11-14
>
> On machines without RTC, both EmuTOS and Atari TOS initialize the system
> date to the TOS build date if no valid date is found stored in the IKBD.
> Since Hatari 2.4 sadly ships with the already one-year-old EmuTOS 1.1.1,
> you get its build date.

I see.


> We therefore must assume that initializing the
> IKBD from the host did not work as intended.

Hm.  Maybe I just misunderstood something.  Nicolas?


> PS: RTC in TT and Falcon:
> https://git.tuxfamily.org/hatari/hatari.git/tree/src/ioMemTabTT.c#n153
> 
https://git.tuxfamily.org/hatari/hatari.git/tree/src/ioMemTabFalcon.c#n358

:facepalm:

Thanks, I completely forgot that on TT / Falcon, RTC is in NVRAM, not a 
separate thing emulated by rtc.c.

Uwe, I've now added similar "--rtc-year" support also for NVRAM RTC.


	- Eero