[TUHS] Of /dev/tty8

[Paul Winalski]

On Mon, Mar 18, 2024 at 9:57 AM Clem Cole <clemc at ccc.com> wrote:

> The DZ11 is an eight-port mux (with short pinned modem control and no DMA
> - both causing issues).
>

I'm pretty sure that when we beta tested the VAX-11/780 in the summer of
1977 it had a DZ11.  We only had a few LA36 printing terminals on it so we
never saw any issues with it.  Not so when I started work at DEC in 1980.
The VAX-11/780 I worked on had IIRC three DZ11a supporting 24 terminals.
The lack of DMA was a big issue.  We had to run our VT52s no faster than
300 baud or it brought the system to its knees.

-Paul W.
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