On Sun, 19 Feb 2017, Ondrej Zary wrote:
>
> These two patches are enough to make PDMA work with CD-ROM drives on
> 53C400(A), with IRQ enabled or not. They even improve transfer rates
> with HDDs because of bigger block size.
>
Nice! This is a great improvement.
> But DTC436 breaks with
On Sun, 19 Feb 2017, Ondrej Zary wrote:
>
> These two patches are enough to make PDMA work with CD-ROM drives on
> 53C400(A), with IRQ enabled or not. They even improve transfer rates
> with HDDs because of bigger block size.
>
Nice! This is a great improvement.
> But DTC436 breaks with
On Sunday 19 February 2017 00:27:55 Finn Thain wrote:
> On Sat, 18 Feb 2017, Ondrej Zary wrote:
> > On Friday 17 February 2017 23:38:12 Finn Thain wrote:
> > > On Thu, 16 Feb 2017, Ondrej Zary wrote:
> > > > On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> > > > [...]
> > > >
> > > > > Are
On Sunday 19 February 2017 00:27:55 Finn Thain wrote:
> On Sat, 18 Feb 2017, Ondrej Zary wrote:
> > On Friday 17 February 2017 23:38:12 Finn Thain wrote:
> > > On Thu, 16 Feb 2017, Ondrej Zary wrote:
> > > > On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> > > > [...]
> > > >
> > > > > Are
On Sat, 18 Feb 2017, Ondrej Zary wrote:
> On Friday 17 February 2017 23:38:12 Finn Thain wrote:
> > On Thu, 16 Feb 2017, Ondrej Zary wrote:
> > > On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> > > [...]
> > >
> > > > Are you trying to figure out which commands are going to
> > > >
On Sat, 18 Feb 2017, Ondrej Zary wrote:
> On Friday 17 February 2017 23:38:12 Finn Thain wrote:
> > On Thu, 16 Feb 2017, Ondrej Zary wrote:
> > > On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> > > [...]
> > >
> > > > Are you trying to figure out which commands are going to
> > > >
On Friday 17 February 2017 23:38:12 Finn Thain wrote:
> On Thu, 16 Feb 2017, Ondrej Zary wrote:
> > On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> > [...]
> >
> > > Are you trying to figure out which commands are going to disconnect
> > > during a transfer? This is really a function of
On Friday 17 February 2017 23:38:12 Finn Thain wrote:
> On Thu, 16 Feb 2017, Ondrej Zary wrote:
> > On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> > [...]
> >
> > > Are you trying to figure out which commands are going to disconnect
> > > during a transfer? This is really a function of
On Thu, 16 Feb 2017, Ondrej Zary wrote:
> On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> [...]
> > Are you trying to figure out which commands are going to disconnect
> > during a transfer? This is really a function of the firmware in the
> > target; there are no good heuristics
On Thu, 16 Feb 2017, Ondrej Zary wrote:
> On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
> [...]
> > Are you trying to figure out which commands are going to disconnect
> > during a transfer? This is really a function of the firmware in the
> > target; there are no good heuristics
On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
[...]
> Are you trying to figure out which commands are going to disconnect during
> a transfer? This is really a function of the firmware in the target; there
> are no good heuristics AFAICT, so the PDMA algorithm has to be robust.
> mac_scsi
On Tuesday 31 January 2017 02:31:45 Finn Thain wrote:
[...]
> Are you trying to figure out which commands are going to disconnect during
> a transfer? This is really a function of the firmware in the target; there
> are no good heuristics AFAICT, so the PDMA algorithm has to be robust.
> mac_scsi
On Mon, 30 Jan 2017, Ondrej Zary wrote:
>
> Also tested two CD-ROM drives and they didn't work (machine hangs). They
> didn't work before and looks like they never worked with PDMA.
>
> The fundamental problem of PDMA is that it either transfers all required
> data or it breaks horribly.
On Mon, 30 Jan 2017, Ondrej Zary wrote:
>
> Also tested two CD-ROM drives and they didn't work (machine hangs). They
> didn't work before and looks like they never worked with PDMA.
>
> The fundamental problem of PDMA is that it either transfers all required
> data or it breaks horribly.
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