Kirk, In every case except the motherboard you describe the waveform as being the same for SPP or EPP mode. This leads me to believe that none of the cards are actually going into EPP mode. What were you using to set the cards to EPP mode?
Regards, Steve Stallings > -----Original Message----- > From: Kirk Wallace [mailto:kwall...@wallacecompany.com] > Sent: Sunday, April 15, 2012 6:09 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] G540 Test Update > > I have some scope traces from LinuxCNC's pump below. I > haven't had time > to add text to the pictures yet but I'll try to describe them in this > message for now. The group of pictures is here: > http://wallacecompany.com/machine_shop/G540/ > > ------------ > Motherboard port, set to SPP in BIOS: > http://wallacecompany.com/machine_shop/G540/g540_mb_spp.jpg > > one trace is at 0 V, vertical divisions are 1 V per div., > green LED OFF > > ------------ > Motherboard port, set to EPP in BIOS: > http://wallacecompany.com/machine_shop/G540/g540_mb_epp.jpg > > green LED ON > > ------------ > Rosewill PCI card, set to SPP and EPP, I get the same trace > either way: > http://wallacecompany.com/machine_shop/G540/g540_rw_sepp.jpg > > green LED OFF > > ------------ > Rosewill PCI card, with 1k Ohm pull-up: > http://wallacecompany.com/machine_shop/G540/g540_rw_1kpup.jpg > > green LED ON > > ------------ > Startech PCI card, set to SPP: > http://wallacecompany.com/machine_shop/G540/g540_st_spp.jpg > > green LED OFF > > ------------ > Startech PCI card, set to EPP: > http://wallacecompany.com/machine_shop/G540/g540_st_epp.jpg > > swings all the way to 5 V, green LED ON > > ------------ > SIIG PCI card, set to SPP and EPP, I get the same trace either way: > http://wallacecompany.com/machine_shop/G540/g540_siig_spp.jpg > > just enough to turn green LED ON > > ------------ > SIIG PCI card, with 330 Ohm pull-up, set to SPP and EPP, I > get the same > trace either way: > http://wallacecompany.com/machine_shop/G540/g540_siig_k33pup.jpg > > green LED ON > > ------------ > > Horizontal divisions are 50 microseconds/div. One cycle is 4 div. or > 20kHZ (?) (base-thread = 100000ns, with reset = 1000). > > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > -------------------------------------------------------------- > ---------------- > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
