I was looking for a PCI to ISA card in order to re-use an ISA card with PCI connector of modern PC. I found costronic.com solutions. Do you know further solutions?
Thanks in advance
I was looking for a PCI to ISA card in order to re-use an ISA card with PCI connector of modern PC. I found costronic.com solutions. Do you know further solutions?
Thanks in advance
A search on "pci to isa" + card turns up a few hits. PLX has an RDK for the 9050 PCI to ISA bridge, but I suspect it's pricey.
-- Keith
It isn't easy to do, since the PCI technology is totally different from the comparatively simple ISA bus.
Your best bet will be to locate an adapter card, or a motherboard having both PCI and ISA slots.
Harry C.
Actually, it's not hard to do at all, unless the ISA card is a bus master (_very_ few were). Many devices use the PLX9050 PCI to ISA bridge to do exactly this.
-- Keith
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Thank you all for the replies. I decided to use a development kit like PLX one (PCI 9052RDK-LITE, the upgraded version of PLX9050) for my purpose, so I'm looking for a development environment like that, for migrating ISA card to PCI connector.
Best regards
How can an ISA card be a *bus master* ?
ISA is just the micro's data and address bus basically with a few extra pins to the interrupt controller !
I think only EISA and MCA cards had that ability prior to the adoption of PCI.
Then goes and wonders over some of the earlyish Adaptec SCSI controllers e.g AHA1540/1542. In which case how did they do it ?
Graham
The device asserts a DRQ, waits for the corresponding DACK, then asserts MASTER, at which point it can drive the address/data/control lines as needed.
It's a *little* more than that.
No, it was there in ISA too, though not often used.
Yep. There was also the IBM Multi-media Modem (sound card/modem combined on one DSP) that used bus mastering to swap its OS and data in and out of system memory.
-- Keith
Thanks for the filling me in on the missing bits. I'll have to revisit the ISA bus standard to get to grips with this.
Graham
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