On Mon, Dec 17, 2007 at 12:38:45PM -0800, SJS wrote:
begin quoting Andrew Lentvorski as of Mon, Dec 17, 2007 at 12:21:32PM -0800:
Ralph Shumaker wrote:
>Well, then, I guess winmodems were on the right track after all, eh?
Um, the problem with winmodems wasn't that they ran in software.
I recall someone saying that winmodems were just a fast A/D & D/A
converter, and if they'd only gone that extra bit and made 'em
totally generic, it would have been a wonderful standard feature.
They vary a lot as far as how they are implemented. They started out still
having DSPs and such as peripherals, mostly because PCs at the time didn't
have enough CPU to implement a modem in software. Now, most of them are
entirely done in software, and they are basically soundcards, with
undocumented controls :(
Software modems aren't easy to implement. There is a linux driver for the
modem in my laptop, which basically is a binary module that loads a several
MB kernel module to do the modem part.
Dave
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