From: "Ethan Dicks" <ethan.dicks at gmail.com>
Strictly speaking, DOS is not limiting your signalling
speed,
but the ISA bus could be.
For 100Mbps ethernet, yes. You can only push a fraction of the bandwidth.
There was one, only one, 100Mbps ISA card I ever
ran across (by 3Com, but I can't remember the model number)
3c515
Might not be the only one, though. According to Dan Kegals Fast Ethernet
page (
http://alumnus.caltech.edu/~dank/fe/) there's a rumor that Cogent and
Olicom had ISA 100TX cards. I've never seen or heard of one in the wild.
I distinctly recall there was a 100baseVG ISA card (I had a client who was
bad at math who wanted to go VG so they wouldn't have to upgrade to PCI
desktops). We all know how that turned out.
I've also seen someone put a 100Mbps PCMCIA card in an ISA-PCMCIA bridge,
but that's stretching the definition a bit.