On 05:34 PM 24/10/2001 +0100, Stephen Casey said: >Hello, > >My company manufactures a couple of systems using ISA based data acquisition >cards. As many are no doubt aware, the availability of PC's with ISA >interfaces is not good. Anyway, our short term solution involves using HP >desktop PC's and an expansion card that connects to the motherboard and >gives two ISA slots. The only thing on the card (apart from the connectors) >is a PC87200 PCI to ISA bridge. Anyway, to my question: > >Has anybody out there taken an existing ISA design, and converted to PCI >painlessly (i.e. without fundamental software/driver changes). I ask because >the HP (and another solution from Dell) extension appears to just plug into >the PCI bus, and give working ISA slots even from DOS (not a Windows >driver). I've investigated a few PCI-ISA solutions, but none give us what we >want. The main limitation is our requirement for two DMA channels. > >So, any information on the experiences of others would be very interesting. > >Thanks for your time. > >Steve.
Steve, It was a long time ago but the PLX9052 was designed to facilitate ISA to PCI conversions. I can't recall all the details but I doubt it would support DMA as this is more something that would require a PCI bus master (I seem to recall) and from memory the 9050 series was a slave only device - and hence much easier to implement. http://www.plxtech.com (With the higher bandwidth of PCI over ISA/DMA and the faster computers available these days, are you sure DMA is necessary?) I am sure there are others with more recent PCI experience than me that will correct me. Bye, Ian Wilson * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
