[TUHS] networking on unix before uucp

[Lyndon Nerenberg]

On Aug 25, 2014, at 2:06 PM, John Cowan <cowan at mercury.ccil.org> wrote:

> That surely had to do with how many characters the TTY board could cope
> with before it had to interrupt the CPU.

There was the size of the serial chip's hardware buffer (before kicking the device driver with a hardware interrupt), and the driver itself kicking the kernel via a software interrupt when the driver's buffers were getting full.

--lyndon

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