Subj : Looking For Bbs Clien
To   : AKAcastor
From : Roon
Date : Fri May 03 2024 07:30:25

Hello AKAcastor,

02 May 24 20:09, you wrote to Nightfox:

 N>> I've wondered the same thing.  But I've had the thought
 N>> that technology has advanced a bit since then, and
 N>> hopefully they'd be able to fit a good enough UART into
 N>> the space available for USB-to-serial cables.  Unless
 N>> the manufacturer is being really cheap, I'd see no
 N>> reason not to use a 16550 (or equivalent/better) in
 N>> those USB-to-serial cables.

 A> The 16550 has a 16 byte buffer.  An FTDI FT232R USB-to-serial IC has a
 A> 128 byte receive buffer.  So in some ways, the USB-to-serial cables
 A> are more capable than 16550 UARTs.  There are other USB-to-serial ICs,
 A> but FTDI is kind of the 'gold standard' and others I've looked at at
 A> similar specs.

 A> A downside to USB-to-serial cables is that they use USB instead of
 A> being connected directly to the bus like a 16550 is.  So there is some
 A> latency between the data being received by the USB-to-serial cable and
 A> it being received by the software on the PC itself due to the USB
 A> protocol.  The throughput is great, but in some cases the latency can
 A> be a problem.  Usually for modem use it's fine, but some other serial
 A> devices can be thrown off by the added latency of USB.

and one more downside is that they need usb2, they don't work in usb3 ports :(
/i've learned it in the hard way :)/

Regards,
--
dp

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