Hi Pete, looks like all very usefull/interesting information. Can you put this into the wiki? (Or maybe some other kind soul can do that ;)
Regards, Alex ----- Original Message ----- From: "Peter C. Wallace" <[email protected]> To: "Enhanced Machine Controller (EMC)" <[email protected]> Sent: Wednesday, December 31, 2008 22:14 Subject: Re: [Emc-users] Mesa 7i43/7i33/5i20 questions > On Wed, 31 Dec 2008, Roger wrote: > >> Date: Wed, 31 Dec 2008 18:13:34 +0000 (UTC) >> From: Roger <[email protected]> >> Reply-To: "Enhanced Machine Controller (EMC)" >> <[email protected]> >> To: [email protected] >> Subject: [Emc-users] Mesa 7i43/7i33/5i20 questions >> >> I'm thinking about buying a dead VMC and converting it to EMC using Mesa >> boards and existing analog AMP's and encoders and had some questions: > >> 1. Is there any advantage or disadvantage to selecting either the 5i20 or >> 7i43 boards? The 5i20's PCI interface is probably more robust but >> people seem to be successful with the 7i43. Is there any difference in >> function? > > The 5I20 has 50% more I/O and will have less CPU overhead as it can be > accessed faster over the PCI bus than the 7I43 with its EPP parallel port > connection.The 5I20 is twice as expensive however. One advantage of the > 7I43 > is its mountable outside of the CPU case which may simplify wiring. > > PCI is more robust than EPP but the 7I43 seems pretty good at getting > along > with most parallel port on mother boards and add-in cards, see below > > >> 2. Is the 7i33 quadrature board compatible with the 7i43? It doesn't >> mention >> it in the Mesa documentation. > > Yes, all of our daughtercards work with all of our 50 pin connector FPGA > cards > >> 3. If you need more I/O than a single Mesa board can >> handle can EMC support multiple 5i20's or 7i43's (assuming enough >> parallel >> ports) or a mix of the two? > > Yes > >> >> Roger >> >> > > Here are my 7I43 EPP test results so far: > > > 7I43 EPP tests: > > Motherboard Parallel port Southbridge or SuperIO: > > VIA VT82C686A Long test >3x10^10 EPP ops error free > VIA VT82C686B Long test >3x10^10 EPP ops error free > WINBOND W83977EF Long test >3x10^10 EPP ops error free > VIA VT8235 Long test >3x10^10 EPP ops error free > VIA VT1211 Long test >3x10^10 EPP ops error free > SMSC4977 Long test >3x10^10 EPP ops error free > ITE8643 Long test >3x10^10 EPP ops error free > > PCI ADD-IN > > OXSEMI PCI952 Long test >3x10^10 EPP ops error free > > MOSCHIP 9805 Does not implement EPP correctly, no hope > This seems to be true of all 98XX cards > > SUNIX 1888 long test >3X10^10 EPP ops error free > will not work with 12' cable ok with 5' suggest <2 > feet > > LAVA MOKO S1 long test >3x10^10 EPP ops error free (fastest card!) > > ITE 8875 Trying to figure out how to enable > (comes up with all ports disabled) > > PCIE ADD-IN > > MOSCHIP 9901 Waiting for card > > Testing done with: > > 12 foot IDC flat cable, December 2008 firmware, Rev C 7I43 hardware > except Sunix card (wont config or loopback test with 12 foot cable) > > Rev C hardware is: > > 1. Rev B 7I43 with 4 SMT capacitors soldered on back near > parallel header > > 2. Rev C 7I43 > > Note: I do not suggest using a 12 foot cable, but wanted a worst case > cable for > testing. I suggest the Sunix cards be used with a short cable (2 foot or > so) > as they have limited control signal drive > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
