Re: [hatari-devel] Fast-boot option and SCSI

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

This is a multi-part message in MIME format.

Hi,

Thanks Uwe!


Thomas, there's place in tos.c where IDE & ACSI
are checked, but SCSI isn't:
https://git.tuxfamily.org/hatari/hatari.git/tree/src/tos.c#n758

should that need a check for SCSI too?

I also noticed that SCSI partition counts where
not handled in all the places ACSI ones are.


Attached patch(es) should fix these issues, but I
was wondering, whether I should replace bAcsiEmuOn
& bScsiEmuOn flags with a check for ACSI & SCSI
partition counts?

Any other comments?


(I haven't tested the patch more than that it
compiles, I'll do that after getting ACK for it
otherwise.)


	 Eero


On 8/30/20 9:01 PM, Uwe Seimet wrote:
> Hi,
>
> Yes, TOS (at least an unpatched TOS) can only boot from the first IDE drive,
> whereas it can boot from any ACSI and SCSI drive. The IDE drive is checked
> for a bootable root sector first, followed by the 8 SCSI drives, followed by
> the 8 ACSI drives. Of course, unpatched TOS versions can only boot from
> those interface types (IDE, SCSI, ACSI) supported by the respective TOS. The
> device type does not matter, i.e. TOS would also be able to boot from a
> SCSI CD-ROM drive with 512 bytes per sector if this drive had the right
> filesystem layout instead of ISO format. (Very old CD-ROM drives support
> this sector size.)
> TOS cannot boot from drives that have more than 512 physical bytes per
> sector.
>
> Best regards
>
> Uwe
>
> > Hi,
> >
> > On 8/30/20 1:43 AM, Thomas Huth wrote:
> > > Am Mon, 17 Aug 2020 13:03:01 +0300
> > > schrieb Eero Tamminen <oak@xxxxxxxxxxxxxx>:
> > > > While doing tos-boot Hatari tests for next EmuTOS release, I noticed
> > > > a bug in Hatari.
> > > >
> > > > When using SCSI drive with "--fast-boot on" option, boot drive is A:,
> > > > not C:.
> > > >
> > > > Thomas, because there can be multiple drives, and
> > > > one doesn't necessarily use drive zero, is this
> > > > correct fix, or should something more complicated
> > > > be done:
> > > > ----------------------------------------
> > > > --- a/src/floppy.c
> > > > +++ b/src/floppy.c
> > > > @@ -174,7 +174,7 @@ void Floppy_GetBootDrive(void)
> > > >            if (!ConfigureParams.HardDisk.bBootFromHardDisk)
> > > >                    return;
> > > >
> > > > -       if (ACSI_EMU_ON || ConfigureParams.Ide[0].bUseDevice)
> > > > +       if (ACSI_EMU_ON || ConfigureParams.Ide[0].bUseDevice ||
> > > > ConfigureParams.Scsi[0].bUseDevice)
> > > >            {
> > > >                    nBootDrive = 2;  /* Drive C */
> > > >            }
> > > > ----------------------------------------
> > > > ?
> > >
> > > I think you could boot from any SCSI disk, not only from the first one.
> > > So it likely would be better to check all SCSI disks here.
> >
> > What about IDE, can one boot only from the first IDE drive?
> >
> >
> > 	- Eero