On Fri, 26 Aug 2011, Jon Elson wrote:
> Date: Fri, 26 Aug 2011 20:21:11 -0500
> From: Jon Elson <[email protected]>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <[email protected]>
> To: "Enhanced Machine Controller (EMC)" <[email protected]>
> Subject: Re: [Emc-users] D510 EPP problem
>
> andy pugh wrote:
>> On 26 August 2011 23:26, Peter C. Wallace <[email protected]> wrote:
>>
>>
>>> 2. The HostMot2 driver/paraport driver are unable to set the port into EPP
>>> mode even though this should be easy (or perhaps linuxs parport driver
>>> breaks something on the chip not sure) probably need to dump the mode
>>> control register to see whats going on
>>>
>>
>> I thought that the EMC2 driver was set to just carry on. My
>> understanding was that regardless of what the utils and BIOS say,
>> writing to ioport-hi _does_ lead to EPP transactions taking place,
>> even if the BIOS and OS say otherwise.
>>
> This is our experience with the hal_ppmc.c driver, which has worked
> around this problem
> for a couple of years, so the D510MO was not the first to have this BIOS
> problem.
>
> Jon
It may in fact be something else (maybe a bad port), as Kirks patch doesnt
seem to help on viesturs machine and his port acts "funny" reading 0s with
nothing attached while my test machine reads FFs. I also show 0 trouble with
the hardware. The ECR reg EPP mode setting stuff _is_ in the 7I43 driver so I
dont really know whats going on at this point. Probably have to try some low
level poking about
Peter Wallace
Mesa Electronics
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