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The original message was received at Tue, 13 Jun 1995 21:21:09 -0500
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--VAA00265.803096469/midway.uchicago.edu
Content-Type: message/rfc822

Date: Tue, 13 Jun 95 21:20:44 CDT
From: Bartholomew Niswonger <bniswong@midway.uchicago.edu>
To: amiga@netbsd
Subject: Re: silo overflows w/ GVP SCSI
Message-ID: <CMM.0.90.4.803096444.bniswong@woodlawn.uchicago.edu>

>> That's interesting - with my GVP A530 Accel/SCSI system at 38.4k, disk
>> access merely bring all serial access to a dead stop until a second or
>> two after the access stops.  Of course, I am using CSLIP, so the protocol
>> takes care of the corrupted packets before they could create an
overflow -
>> but the root of the problem is the serial driver.
>>
>On my system, C2000 with GVP Combo 22MHz, there is the same problem with
>simultaneous hard drive and serial access.  Whenever HD is accessed, it
>causes serial (I use 14.4k and 57.6k) to lose lots of characters.  The
>same thing happens in both NetBSD (on both 1.0 and -current from
>Ican'tremsoftware and serial
>drivers I've used.  I've heard from somewhere that it is a usual hardware
>bug on different GVP accelerators.

I get the same silo overflow errors with my 14.4k modem when I try to
do anything above 19.2.  I am using a straight 4000/040 @ 25, 14 megs,
and no cards, running 1.0A with the mw-diffs off uni-regensburg...

It seems it is not merely GVP stuff causing the problem :(



==============================================================================
   Bartholomew Niswonger
   bniswong@midway.uchicago.edu               Voice:..........312.643.8913

   Computer Programmer......University of Chicago
                            Biological Sciences Division/Academic Computing
   Projects.................CGI/HTML & Databases
   OS of choice.............NetBSD/Amiga-1.0A

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