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Pastimes : Dream Machine ( Build your own PC )
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To: Zeuspaul who wrote (10487)2/17/2000 10:49:00 AM
From: Howard R. Hansen  Read Replies (1) of 14778
 
Back when this thread was just starting there was some discussion about how much a WinModem slowed down a computer. I recently came across some interesting information that corrected a misconception I had about WinModems so I thought I would pass it on.

Question
How much of a drag on a CPU is a WinModem?

Responses were

>Hooda Gest wrote:
"It can't be calculated on a generic basis. Right now we have different kinds of "Winmodems"....The USR/3Com Winmodem (the one that actually owns the name) uses very little of the CPU resources because most functions are performed by the modem. "

>Ed Schulz wrote
"The 3Com Winmodem is a host controller modem. The Pentium host controls a real DSP chip on the modem board. Lucent Win Modem / WildWire and Conexant HCF partition the functions similarly.

Soft modems, or host signal processing (HSP) modems, use much more CPU. The hardware lacks a DSP, so the Pentium host does all the processing."
--
Ed Schulz
edschulz@lucent.com

Conclusion the biggest negative WinModems, internal host controller modems, have is they can not be used with DOS and old DOS legacy programs and the advertisements do not tell you if a modem is a host controller or a host signal processing modem.
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