İs there a adapter for it or can i make something like this
https://www.ebay.co.uk/itm/114575954684
Something like this allows ISA cards to work over PCI, not sure it can go the other way, Im pretty sure it would require a significant amount of work to get PCI to interface with the ISA bus and there would be a HUGE performance loss as ISA is significantly slower than PCI. ISA is also very rigid in how it operates and wouldn't mesh well with how flexible PCI devices are with interrupts and how the card uses them.
I dont know how well and ISA card would work with the above adapter . .I doubt very well.
No. Just no.
ISA is an 8/16 bit architecture with a direct to CPU connection.
PCI is a 32/64bit architecture with a bus arbitration architecture that uses the chipset to do bus mastering and other functions, and is thus abstracted from the CPU by the supporting chipset.
This doesnt even begin to discuss stuff like bus clock timings...
There is no way to put a PCI device into an ISA slot.
wierd_w wrote on 2025-04-28, 14:13:No. Just no. […]
No. Just no.
ISA is an 8/16 bit architecture with a direct to CPU connection.
PCI is a 32/64bit architecture with a bus arbitration architecture that uses the chipset to do bus mastering and other functions, and is thus abstracted from the CPU by the supporting chipset.
This doesnt even begin to discuss stuff like bus clock timings...
There is no way to put a PCI device into an ISA slot.
All true, would be far easier to add USB to an ISA system than try to mesh a PCI card over ISA.
Apparently running ISA over PCI works with the associated interrupt and IRQ issues of doing so.
Yeah no. If you're trying to do this, take a step back, think about your requirements, and do something else instead.
World's foremost 486 enjoyer.
Thx for all answers.
