Good day all.

Does any one happen to know if a list of known PCI or PCI-Express printer port cards, that will work with Mach3 and or Linuxcnc.

I ask as I have a PCI duel printer port card based on the Moschip Semiconductor MCS9865IV-AA Chip.

I am trying to use this card on my cnc computer, as the motherboard does not have an onboard printer port.

The card will install and work under both windows or linux, but it does not matter if I run Mach3 or LinuxCNC, I keep getting missed steps.

I have tried linux, windows xp, and windows 7, all give me ramdom missing steps.

So I used an Arduino UNO as a step pulse generator, ramping up to 1245rpm, I can not feel or hear any missing steps.

So I can only think that there is something wrong with this PCI printer port card, or that it is just not upto the job.

Does anyone here have any ideas?

Thanks for your time.

Best Regards.