Check Startech (https://www.startech.com). They have a range of RS-232
and similar I/O cards and at least the last time I bought one several
years ago, the chip emulated a 16550 UART and didn't seem to have more
jitter than any other serial board I'd tried.
John
----
On 11/6/21 12:32 PM, Chris Caudle wrote:
On Nov 5, 2021 9:14 PM, Rich Wales <[email protected]> wrote:
> If we could find PCI or PCIe serial cards
The old Exar product line that MaxLinear acquired might still have PCIe
UART.
https://www.maxlinear.com/product/interface/uarts/pcie-uarts/xr17v352
If you could find those on a card they should be good performance. I
haven't measured the performance of the UARTs in super IO chips. Those
would share the upstream connection with a lot of other things, so
might vary in latency.
-- Chris Caudle
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