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Date: Fri, 03 Oct 1997 10:45:37 -0700
From: Julian Elischer <julian@whistle.com>
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To: Nicolas Souchu <Nicolas.Souchu@prism.uvsq.fr>
CC: Greg <gpavelcak@philos.umass.edu>, hardware@FreeBSD.ORG,
        questions@FreeBSD.ORG
Subject: Re: ppbus problems
References: <199710021659.MAA00290@tower.my.domain> <19971003170915.44659@coreff.prism.uvsq.fr>
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Nicolas Souchu wrote:
> 
> On Thu, Oct 02, 1997 at 12:59:35PM -0400, User Gp wrote:
> >because it's close to my parallel port and
> >
> >       WINBOND W83877F                 WINBOND W25P022AF6
>                 ^^^^^^^
>                 here it is!
> 
> I'm working on w83877 detection/configuration. Yet, try to
> force EPP mode with flag 0x3... this may avoid some timing
> problems.

I have the manual for this chip becasue we use it in our
product. do you need any help?
There is a way to detect for this chip..


> 
> >
> >ppc0 at 0x278 irq 12 flags 0x1 on isa
> >ppc0: Generic chipset in NIBBLE mode
> >plip0: <PLIP network interface> on ppbus 0
> >nlpt0: <generic printer> on ppbus 0
> >nlpt0: Interrupt-driven port
> >ppi0: <generic parallel i/o> on ppbus 0
> >vpo0: <Adaptec aic7110 scsi> on ppbus 0
> >scbus0 at vpo0 bus 0
> >sd0 at scbus0 target 6 lun 0
> >sd0: <IOMEGA ZIP 100 D.13> type 0 removable SCSI 2
> >sd0: Direct-Access
> >sd0: UNIT ATTENTION asc:28,0
> >sd0:  Not ready to ready transition, medium may have changed
> >862MB (196608 4592 byte sectors)
> 
> I suspect data corruption... Please, try without any disk inside the drive
> during boot. Try fdisk once the system is started (without any disk either),
> you should get "medium not present" error. Then try with a disk inserted.
> 
> I've noticed in one of your other mails that vpo driver hangs when it requests
> the ppbus (I remember [ppbreq])... I'm working on some ioctls that would
> allow us to query the state of the bus and debug it more efficiently.
> 
> --
> Nicolas.Souchu@prism.uvsq.fr
> FreeBSD - Turning PC's into workstations - http://www.FreeBSD.org