Soft V.90/K56flex PCI/Mini-PCI/AMR/MDC Twin-chip (incl SmartDAA) Chipsets
Usage: To find other modems in the same chipset Family.
All drivers, downloads & info on this site are found via the modem.
Each Modem Manufacturers’ page also has external web-links, where available.
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General Information
- Originated before 24 March, 1999 this was the first modem-riser version of the very successful HSF modem chipsets using a SmartDAA chip. This latter had the advantages of zero power-draw from the telephone line, elimination of mechanical components, simple worldwide homologation of the entire chipset and improved lightning protection.
‘Soft’ modems have neither DSP nor Controller chips, essentially relying upon the host CPU to perform all modem functions. AC-Link (intel’s AC`97) is a M/B interface for AMR/CNR/MDC architectures to either an on-board sound-chip (RipTide from Conexant) or ‘core logic solutions’ (the soft-modem software).
Part of the design principle behind AC-Link modems is to separate the physical telephone-line components of the modem from the M/B components into a discrete riser-card. This has two immediate benefits:
- The riser card is very simple (cheap) to construct, since it consists of only a M/B-interface + a line-interface, and this latter can be varied to suit the countries in which the card will operate.
- The Telecom-certification for the modem is isolated to the riser-card rather than the M/B.
If coupled with a RipTide chip this can be an audio-modem combo, otherwise is DFT. The modem was proposed in PCI + mini-PCI formats, whilst AC-Link formats were AMR plus MDC for mobile computers.
The chipset was superceded by the imaginatively-named SmartMC II chipset.
Extra Info
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Known Problems
- (Windows XP, 2000, Millennium): the phone line may be disconnected if a DVD/CD-ROM drive is configured to PIO mode (the default on some systems) and is in use. Configure to DMA mode (Device Manager, usually IDE ATA/ATAPI Channels, Primary and/or Secondary channel). Extra info: PIO is an old transfer-mode which ties up the CPU whilst moving data bit-by-bit across the computer bus; DMA uses a DMA-controller to rapidly shift blocks of data in parallel with the CPU, and was explicitly designed to solve the congestion problems caused by PIO transfers.
Copyright Statement
Compilation, original writings & design Copyright ©2002 - 2013 Modem-Help, Ltd.
All trademarks respected as the property of their respective owners.
Full Copyright + Disclaimer statement
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Quick Stats
Items available:
- 14,260 modems
- 1,747 chipsets
- 2,245 chips
- 803 modem mfcs
- 121 comp/MB mfcs
- 1,706 comps/MBs/retail
- 144 chipset mfcs
- 22,769 external web links
- 141,342 hardware IDs
- 221,963 download files
† Key
Mfc: the company no longer makes/supplies modems and/or their chipsets, or has been taken over, or otherwise fallen into commercial Tophet.
Modem: it is no longer in production.
Chip, Chipset, Family or Family-Type: it is no longer produced at the Foundry.
In short, the item marked with a † has shuffled off this mortal coil, it has gone to meet it’s maker, to sing with the choir invisible; it is, not to put too fine a point upon it, an ex-modem (-Mfc, -Chip, -Chipset, -Family or -Type).
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These pages are a LAMP-development of the original Modem-Help, UK site (most of the old HTML pages still exist, but havn’t been updated for quite some time). That site, in it’s turn, was a transfer from the first html site on free-pages at Freeserve (sadly, now gone). The current format allows superb search facilities, customisation by Registered members, plus is quick ‘n’ easy to update.
Diligently put together in the UK by Alex Kemp. All efforts have been taken to ensure the veracity of what is written - if you know of any errors or omissions then please let us know.
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