Re: [hatari-devel] Re: Hatari floppy drive detection with EmuTOS

["Roger Burrows" <rfburrows@xxxxxxxxx>]

On 18 Jan 2014 at 10:51, Vincent Rivière wrote:

> On 17/01/2014 21:55, Roger Burrows wrote:
> > In bios_init(), the calibration is done immediately before blkdev_init()
> which
> > does the floppy/hard disk detection.  In any case, the default delay value
> for
> > an 8MHz ST is pretty accurate ...
>
> Also, does Hatari issue an IDE interrupt at startup? Or after IDE RESET?
>
> I had trouble with that on the FireBee, and I became almost mad.
> That "I'm ready" interrupt occurred only with one of my CompactFlash cards,
> not the other one, so it seems to be device-specific.
> The interrupt occurred exactly when EmuTOS was waiting for the floppy
> drives, causing the floppy detection routine to fail.
>
> On Atari hardware, the same interrupt is shared by the FDC and IDE devices
> (and maybe ACSI and and SCSI, too). But the current EmuTOS interrupt handler
> is only aware of the FDC.
>
> Sorry to bug you again with this issue, but that's better than keeping that
> for me.
>
> NB: One could easily check if that issue is present on Hatari by removing
> any emulated IDE drive.
>
If I boot with no ACSI drives, no IDE drives, no GEMDOS drives, the problem is
still there.  And it does not happen on real hardware (at least on my
hardware).

Roger