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echo: usr_modems
to: Conrad Brown
from: Richard Town
date: 1996-02-01 14:10:02
subject: Free modems!!

-=> Quoting Conrad Brown to Richard Town <=-

 DS> RPI Modems            : Pentium, Windows, 16MB (or better)

And presumably WINModem is comparable too...

 RT> What has the amount of RAM got to do with anything?  Windows uses a
 RT> swap file on your hard drive in "enhanced" mode

 CB> Windows does not use application swap files in 386 enhanced
 CB> mode only in standard mode.

But I didn't refer to application swap files, only swap files in 386enh

 CB> instead. Therefore the amount  of read/write mem as well as processor
 CB> speed is quite important if you  want to make FULL USE of windows and
 CB> the com programs within windows.

Appreciate that.  Perhaps it's worth considering the Swap file and the
Application swap file differences.

When running in 386 enhanced mode, Windows can make optimal use of memory
by swapping, which involves temporarily moving information from memory to a
file on the hard disk, making the memory available for other applications.
It stores the information in a Swap file, which is a hidden file that
reserves space on the hard disk.  When the information temporarily stored in
the swap file is needed, Windows moves it back into memory.

In Standard mode, each time you start a non-Windows application, Windows
creates a temporary Application swap file for that application.  When you
switch from the application, Windows moves some or all of the (that)
application from memory to the (Application) swap file, making the memory
available for the application you're switching to.  When you quit the
appliction, Windows deletes any Application swap files it created.

Windows does not use Application swap files when running in 386
enhanced mode.

As regards memory (extended that is) over the 1024kb, it does not matter if
the active application takes less than available since when in background in
386enh it's swapped out anyway (less any TSR-ish portions).  If the
WINMODEM or RPI aware terminal is loaded in the background then it will be
called according to whatever timeslices and priorities are allocated in
its .pif file.

The advantages that WinModem or RPI+ can offer is in using
the processing power and RAM speed of the host rather that whatever is
on offer in a standard modem.  Also page or frame sizes can be upped by
design (using host's RAM), and any Selective Reject or MNP10 resends will
be slick.

RPI+ is now Win'95 capable, is WinModem?

Disadvantage is that OS2, DV, or plain DOS (or other operating platforms
for that matter) for the WinModem are not supported.
(running Win under OS2 or DV with a software EC/DC modem is a bit like
going for a romantic drive with your lover on the roof rack.  Only do it
if you _really_ have to...)

Cheers
Richard

... and there's no Window's built mailer :-(  

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