8255 on PCI bus

[Guest]

I do not have much experience on PCI bus. I designed and used 8255 on many
different ISA boards.
Can anyone suggest how can I connect an (or couple of ) 8255 to a PCI bus in
simplest possible way?

 

[Leon Heller]

I do not have much experience on PCI bus. I designed and used 8255 on many
different ISA boards.
Can anyone suggest how can I connect an (or couple of ) 8255 to a PCI bus
in simplest possible way?

You might be able to use a PCI bridge chip like the ones from PLX to
interface the 8255. You could also emulate the 8255 in an FPGA and put the
PCI interface into it, as well. Designing the PCB might be the hardest part
of the job due to the PCI interface requirements.

Leon

 

[Winfield Hill]

Pier Joursey wrote...

I do not have much experience on PCI bus. I designed and used 8255
on many different ISA boards. Can anyone suggest how can I connect
an (or couple of ) 8255 to a PCI bus in simplest possible way?

Use a PCI-ISA bridge chip, like an Intel 82380AB or 82371SB, see
http://www.intel.com/design/chipsets/datashts/290550.htm. Or the
ISA-bridge function in an IP core for FPGA. Or a Super-IO chip,
SMSC LPC47N227, http://www.smsc.com/main/datasheets/47n227.pdf

Or purchase a pcb containing one of these devices, ready to go,
with drivers and instructions...

 

[Rick Cassidy]

I found a Great PCI-DIO card on Ebay for $30. It has 6 bytes I/O...I'm
multiplexing it into a bunch more, but you might be better off going that
route.

Rick-