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

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 15/01/2014 03:43, Roger Burrows a écrit :
> On 14 Jan 2014 at 23:31, Nicolas Pomarède wrote:
> > Do you mean that if you set timeout to 9 sec, then command 0x03 on drive
> > A stops after 3 sec and bit 5 of fffa01 is cleared (=command over) ?
> No.  I mean that increasing the timeout still didn't help detect a drive that
> was actually present (according to Hatari).  Bit 5 of fffa01 was never set to
> zero, the timeout happened after 9 seconds instead.

But on real HW, do you mean that if you set the timeout to 9 sec, then 
bit 5 gets to 0 after 3 sec ?

> > That's not really related, but when you decide to timeout a command, I
> > think you should send a force interrupt command, not send the next
> > command immediatly ; Hatari might be wrong on that timeout case, but at
> > least with a force int command it would have worked.
> You're probably right.  But that still doesn't explain why a restore command on
> a configured drive apparently never completes.

Yes, in that particular case, something certainly needs to be fixed in 
Hatari. Bug generally speaking, you should do it anyway, whether on real 
HW or emulation ; if you timeout on real HW for whatever reason and 
sends a new FDC command, it will be ignored as busy bit is still set in 
the FDC.