>Powersurge took out my multi-io card, and I am about to order another.
>Wait, what is this all about! There are cards with 16550 UARTS and
>cheaper ones with 16450.
>Which is better for a LINUX box?
It depends what you do.
Quote:>What's the difference?
100. :) Seriously, the SERIAL-HowTo covers this. The 16550A UART has a 16
byte buffer, whereas the 16450 (and 8450) do not. This means if communication
gets too fast on the 16450, you lose bytes. The 16450 has a
(practical/usable) maximum speed of 19200, whereas the 16550A goes up to
If you have terminals hooked up that can go pretty fast, or anything better
than a 14400 external modem, you'll want the 16550a's.
Quote:>My (cheesy) config is:
>4MB ram, VGA, 100M IDE Drive.
>Multi IO Card, 2s/1p/fd/ide hd or equiv.
Also, the 16550A allows you to transfer 16 bytes at a time, instead of just 1.
So that means one interuppt from the CPU instead of 16 for 16 bytes, therefore
Quote:>I've seen a 16450 2s/1p/1g/fd/hd card for 15 bucks, or
>16450 multi io $35
>16550 multi io $55
>4 16550 serial card ($80) (verynice)
>should I go for the 15 dollar cheap-o, or fork over the bucks for the
Depends. If you are ever planning on getting a fast modem or anything, go for
it. If you only use the serial port for mice, I wouldn't worry about it.
"And the man in the mirror has sad eyes." -Marillion