OpenEuphoria

Re: External Modem Emulator

• Posted by Irv Mullins <irv at ELLIJAY.COM> Jan 26, 2000
• 524 views

----- Original Message -----
From: Bernie Ryan <bwryan at PCOM.NET>
To: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Sent: Wednesday, January 26, 2000 7:41 PM
Subject: Re: External Modem Emulator


> >to windows, but is little more thn a sound card hooked up to a phone
line -
> >if you can get the correct commands to tell the winmodem to make sounds,
> >and
> >get the specs for modem communications (what sounds do what), it should
be
> >fairly easy. However, it seems noone has done that, so it must be fairly
>
>    Winmodem is a software emulated modem which uses a DSP ( Digital Signal
>    Processor ) integrated circuit. The DSP can also emulate a soundcard
>    with the proper software but it is not a simple task to write any
>    emulator.

Plus, the emulation takes up (on my pc) more than 99% of the cpu's time.
That
means, while downloading a large file at any respectable baud rate, the
computer sometimes ignores less important things like mouse clicks,
keystrokes,
other programs....

Contrast that with an external (real) modem on the Linux box which ties up
almost
3% of the processor's cycles.

Irv