From: "Sarnath Kannan" <sparc64@rediffmail.com>
To: "Dan Malek" <dan@embeddededge.com>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: Re: IDE in Mode 1 (Sandpoint) how ?
Date: 14 Nov 2001 03:00:45 -0000 [thread overview]
Message-ID: <20011114030045.2376.qmail@mailweb9.rediffmail.com> (raw)
>
> I forgot, is this an X2 or X3 (or X3b) version of the
> Sandpoint?
>
Dan, This is an X2 board. I am able to
telnet to the machine and work cooly..But
serial is dead slow and the reason is as u said,
ISA interrupts.. They are not coming in.. Its
very clear. After a small investigation, I found
out that the serial chip times out on the
interrupt and "rs_timer" prints output in polled
mode. By changing the "Timeout value", I was
able to get faster output on the serial line.
But the problem of ISA interrupts not being
routed is still there. This is very irritating.
Dan, I further noticed that "i8259_init" disables
all 8259 interrupts during initialization.
I thot this could be a reason and enabled all
8259 interrupts in a seperate loop. Even that
dint pay much except for a gush of ISA interrupts
immediately after enabling.
But what I am wondering is "How ISA interrupts
tick" for mvista kernel, when all 8259 interrupts
are disabled !! Am i missing sthg ?
Thanks,
Sincerely
Sarnath
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next reply other threads:[~2001-11-14 3:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-14 3:00 Sarnath Kannan [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-11-13 8:17 Re: IDE in Mode 1 (Sandpoint) how ? Sarnath Kannan
2001-11-13 4:07 Sarnath Kannan
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