Re: [hatari-devel] Hatari regression with TOS 2.05 (--fast-boot off, <2MB RAM)

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 10/7/19 9:01 AM, Thomas Huth wrote:
> Am Sun, 6 Oct 2019 19:46:19 +0300
> schrieb Eero Tamminen <oak@xxxxxxxxxxxxxx>:
> > While running TOS bootup tester, I noticed that Hatari has regression
> > with TOS v2.05 (regardless of TOS language version).
> >
> > If there's <2MB of ST-RAM and one uses "--fast-boot off" option,
> > TOS never boots with ST, it just bus errors:
> [...]
> > It works also with MegaSTE, and some STE configs, failure is mainly
> > with ST:
> > hatari --fast-boot off -s 1 --machine st --tos tos205de.img
> >
> > This works fine with Hatari v2.0.0, but doesn't anymore in
> > Hatari v2.2.1, i.e. it's a regression, a bit old one.
>
> I assume you're using the correct version of TOS 2.05, the one that
> works with plain STs, too? Original TOS 2.05 only worked on STEs, but

Thanks, I didn't know that.  I think I'll just disable
testing anything else than (Mega)STE with TOS 2.x < 2.06.


> there are patched versions available in the internet which work on
> both. Could you provide the md5sum of your TOS 2.05 image?

$ md5sum tos205*
1abfc1d02017cf0f2e877a87973168b1  tos205de.img
30052433dc31e90beaff482ca1efdf17  tos205uk.img
7cdd45b6aac66a21bfb357d9334e46db  tos205us.img


> Anyway, if you've got some spare time, could you bisect the issue to
> see where it broke?

Here:
-------------------------------------------------
commit 8409e8b05b027df80170acb42fc3b7ecce810866
Author: Nicolas Pomarède <npomarede@xxxxxxxxxxxx>
Date:   Wed Jan 4 23:24:08 2017 +0100

    Add full support for STF/STE MMU at $FF8001 and address translation
    This emulates the behaviour of the RAS/CAS signals when addressing RAM,
    depending on the size of the 2 physical RAM banks and on the size of
    the logical banks defined in bit 0-1 and 2-3 at $FF8001.
    This allows TOS/Emutos to detect RAM size as a real ST would do.
    Thanks to Christian Zietz for his documentation of the CAS/RAS 
signal mapping
-------------------------------------------------


	- Eero