Messages in this thread | | | Date | Sun, 18 Oct 1998 14:43:53 -0400 (EDT) | From | Daniel Berlin <> | Subject | Re: WINMODEM driver |
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No drivers exist right now. Depends on how they really work. What happens is that the vxd driver in windows contains dsp programming code, as well as dsp code embedded in it, and flashes the modem on every startup of windows. As far as i can tell, once it does that, it's a normal modem or has another driver faking a modem to windows, or uses UniModem or something like that. If you replace the "rom" in the vxd with the "rom" code from another winmodem, you magically now have that other winmodem (working fine and all). Pardon my mixture of the incompatible terms dsp and flash rom. I honestly don't remember if it's actually programming a dsp, or if the dsp is already programmed, and it's just programming flash. I gave up switching the terms around while writing the email, so i think the sentences may be a bit confusing above. See, i don't know if the dsp/flash retains the code over a reboot/power down or not. And whether it acts like a real modem inside windows, without any extra help. if it doesn't, then the winmodem also must have some weird interface (most likely some other driver faking a com port using a winmodem IF->comm port shim, or a UniModem interface, or something else). I've been toying with the idea of moving to a country where reverse engineering isn't illegal, and disassembling it all, and seeing what is going on. But i can't because i have to study for calculus. If it isn't a real modem, and uses some weird com port/<insert your favorite windows modem interface> shim, and ms had a hand in it, i might be able to track down the guys responsible for that interface, and talk with them (I work for MS Research part time, but people in some groups rarely respond to emails from anyone. e.g. The Visual C++ group. Any ignorant flaming people will be ignored, as i have better things to do.). Only problem in that case is my NDA, but i'm sure i could produce a black box or two that would help. As you can see, i've only really tried to figure out half the problem. I can most likely get the thing programmed if someone else can make it talk. --Dan
On Sun, 18 Oct 1998, christophe leroy wrote:
> Is there somewhere a driver for a internal Winmodem ISA card ? > If not, does someone know where i can find technical informations to > develope one ? > > christophe leroy > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu > Please read the FAQ at http://www.tux.org/lkml/ >
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
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