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SubjectRe: Getting serial.c to share it's interrupts.
On Tue, 14 Apr 1998, Daniel Egger wrote:

> On Mon, 13 Apr 1998, you wrote:
> >> No.... modems are not sync.... V42.bis etc can't provide that...
> >Sorry to disappoint you but Albert is right. All modern modems are synchronous
> >with an async adaption layer presented to the user
> How can you provide syncPPP if you have no constant transferrate?

When the modem is idle, i.e., when no user data is being transferred,
the modem is actually transferring a pseudo-random 8-byte (for an
8-bit constellation) word stream.

User data is XORed into this word stream. It is extracted, also as
an XOR operation.

Dick Johnson
Penguin : Linux version 2.1.92 on an i586 machine (66.15 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.

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