On Wed, 2011-01-26 at 19:37 -0600, Igor Chudov wrote: > Steve, looks VERY nice, thanks. I will try to figure out which one I need > (low profile or not) and will try to get one ASAP. My slight complication is > that I have a very small computer case and fitting stuff in it is, shall I > say, a challenge.
The parallel port problem is only with FPGA boards that use EPP for a communication link. I have just learned a little more about EPP, EMC2 writes or reads the EPP register on the parallel port card, then the parallel port card handles the hand shaking signals with the peripheral from then on. That's why the firmware (the PCI card's local software) on the parallel port card is important. For SPP, the application's driver software handles the data transfer by reading and writing and monitoring the data, control, and status registers, no firmware is involved (?). For the EPP/FPGA problem, Lava cards have been recommended, but the one I got doesn't work. I don't know the model number off hand, I can get it when I go down to the shop. If your I/O is not using EPP (for instance hal_parport instead), then just about any card should do for EMC2 software generated step/dir, PWM, slow encoder decoding (jog wheel, MPG), and toggling bit pins for coolant, spindle direction, and such. I tend to use these: http://www.newegg.com/Product/Product.aspx?Item=N82E16815166007 but there are many to choose from that will work as well, or better. -- 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
