I bought a lava card yesterday, hopefully it will work. i
On Thu, Jan 27, 2011 at 8:34 AM, Peter C. Wallace <p...@mesanet.com> wrote: > On Wed, 26 Jan 2011, gene heskett wrote: > > > Date: Wed, 26 Jan 2011 21:45:04 -0500 > > From: gene heskett <ghesk...@wdtv.com> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] Second (PCI) parallel port card > > > > On Wednesday, January 26, 2011 09:27:46 pm Peter C. Wallace did opine: > > > >> On Wed, 26 Jan 2011, gene heskett wrote: > >>>> The NetMOS/MOSChip chipsets are known _not_ to support EPP mode > >>>> properly so will not work with Mesa/Pico/Pluto FPGA cards. They will > >>>> work fine if you just want more I/O however. > >>> > >>> Thanks Peter. Now, to remember that when I do want to use it, that is > >>> the problem. > >>> > >>> What specifically fails? > >> > >> > http://www.mail-archive.com/emc-users@lists.sourceforge.net/msg11230.htm > >> l > > > > This reads amazingly similar to a problem I had with an eprom burner I > made > > while at a radio station in NE CA in about '81 or '82, with about $25 > worth > > of parts, where the chip running the show was a Zilog Z-80. I was not > able > > to get a reliable write through my buffers and at the lines of the eprom > > socket in time to get a good latch even with FAST parts, so I gave up and > > called Zilog. Their response was that they thought ever one knew that > when > > the bus cycle started, if /READ wasn't true, then it was going to be a > > write and that I should enable the buffers at the start of the cycle > > anytime /READ was high. That gave me another 100ns or so to get every > > thing in one sock and worked flawlessly. But there was no hint in the > > published docs about such a prediction method. > > > > Now, whether such a similar work-around could be cobbled up for that, I > > have no clue. > > > > Besides, the card I have does not have the 9805, but has the 9815, > > presumably a newer chipset. > > > > I wonder it there could have been a fix for that applied in the newer > 9815 > > chip? > > > > All the 98XX series parts share the problem. (the existance of the problem > is > documented in the MOSChip data sheet. Their suggestion is to not use EPP > mode...) > > > > > How would one go about checking that?, I assume with a loopback plugged > in > > it should be amenable to software checking. One would have to cobble up > a > > parallel loopback, I may have enough of those parts on hand. > > > > Thanks Peter. > > A loopback for EPP needs at least an inverter for the handshaking... > > > > > > -- > > Cheers, Gene > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > <http://www.captaincanadacrusades.ca/articles/none-dare-call-it- > > conspiracy%5B1%5D.pdf> > > Today, THREE WINOS from DETROIT sold me a framed photo of TAB HUNTER > > before his MAKEOVER! > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > > ------------------------------------------------------------------------------ > Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! > Finally, a world-class log management solution at an even better > price-free! > Download using promo code Free_Logger_4_Dev2Dev. Offer expires > February 28th, so secure your free ArcSight Logger TODAY! > http://p.sf.net/sfu/arcsight-sfd2d > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users