On Thu, 2011-01-27 at 11:15 -0600, Jon Elson wrote: ... snip > Every multi-IO chip has its own way of interpreting the > incredibly lax specs of the IEEE-1284 protocol. Some boards put the > data and WRITE/ signal out first, then provide the strobe pulse. Some > put them out at the same time, one I saw actually put out the data and > WRITE/ AFTER the strobe! Well, how much delay do you need to be sure > the data and WRITE/ are stable? Who knows!! So, all this keeps me > hopping whenever a new multi-IO chip comes out.
This link: http://www.beyondlogic.org/epp/epp.htm seems to indicate that one only needs to do a write to the EPP Data or Address register to do an EPP transfer. There doesn't seem to means to "put" the card into EPP mode. What am I missing? Bi-directional SPP seems to be the most reliable since the driver has access to the entire transfer process. It is slower, but it might be fast enough for many applications. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ 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
