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- Newsgroups: comp.dcom.modems
- Path: FreeNet.Carleton.CA!an171
- From: an171@FreeNet.Carleton.CA (Anthony Hill)
- Subject: Re: Does Cardinal/Supra write their own firmware?
- Message-ID: <DKu18H.5GC@freenet.carleton.ca>
- Sender: an171@freenet2.carleton.ca (Anthony Hill)
- Reply-To: an171@FreeNet.Carleton.CA (Anthony Hill)
- Organization: The National Capital FreeNet
- References: <4cpegd$1di2@news.gate.net>
- Date: Sun, 7 Jan 1996 22:31:29 GMT
-
-
- Gary & Robin (hoch@gate.net) writes:
- > I noticed after visiting the Rockwell homepage that Rockwell calls
- > their latest firmware for their 28.8 chipset, version 1.400. This is
- > the same version number that Cardinal uses for their latest flash
- > update.
- >
- > Does Cardinal simply ship new firmware when supplied by Rockwell? Or
-
- Cardinal makes soem minor modifications to the firmware, but it's
- mainly just Rockwell stuff.
-
- > do they write their own? What about Supra's flash upgrade? Is this
- > also version 1.400?
-
- Supra started out with the plain old Rockwell firmware, but since
- they're smart enough to knwo how poor Rockwell firmware is, they've made
- VERY extensive modifications to it. They're firmware is now quite
- different from the Rockwell code (and quite a bit better IMO).
-
- > If its true that all Rockwell based modems also use identical firmware
-
- Not quite, although a lot of them do. Most companies that just
- buy the Glue 'n Go chipsets (eg RC288ACi chipsets), which come with a
- datapump, controller and firmware, make very few modifications to that
- firmware. A few of the bigger companies using these chipsets make some
- modifications (eg Cardinal and Zoom), but Supra is about the only company
- I know of that makes really big changes. Most of the smaller no-name
- comapnies don't even bother to add the company name to the firmware, let
- alone change anything meaningful. Companies who do NOT use the Rockwell
- controller (meaning they got jsut a Rockwell RCxxxDPi chipset), have to at
- least port the firmware code to a new processor. They usualy also make
- fairly major changes to the code in the processes. Hayess/PPI and
- Microcom are two companies I can think of that do this, although they're
- are probably others.
-
- > in addition to identical chipsets, why not just buy the cheapest of
- > these, assuming I don't want to spend the bucks for the Sportster?
-
- Well, there's also more too it then merely the datapump and the
- firmware used. The DAA (part that connects all this stuff to the actual
- phone lines) is what makes a reasonable modem a good modem, or what makes
- a good modem a great modem, and most of this is not included in the even
- the Rockwell complete chipsets. Addition even something so simple as the
- PCB construction can cause problems if it's not done right, which DOES
- happen a lot with the cheapest modems. In general though, there isn't a
- heck of a lot of differnce between most of teh Rockwell Glue 'n Go modems,
- mainly just price and tech support (which can often be worth an extra $25
- easily, even for a low-end modem).
-
- Anthony
-
- --
- Anthony Hill | an171@FreeNet.Carleton.CA
-