[NTLK] BasiliskII ports problem

[Vladislav Korotnev]

Eckhart,

Not sure if this is the same problem you're having, but a few weeks ago
when I was trying to develop a serial port based app, the trick was to use
the /dev/cu. subset of ports instead of /dev/tty.
Apparently the TTY ports require hardware control flow to be operating and
the device reporting to be ready to read, whereas their CU counterpart
doesn't care.

Didn't try this with Basilisk, but might be worth a try.

On Tue, Oct 21, 2025 at 2:01 AM Eckhart Köppen <eck at 40hz.org> wrote:

> Matthias pinged me about cleaning up the Einstein serial port support, and
> I wanted to check how the serial chip based implementation I added compares
> to the lower level DMA based solution.
>
> Part of that functionality is to handle a bug in BasiliskII when using a
> pseudo terminal port for the classic MacOS modem or printer ports, but I
> just can’t get BasiliskII to behave. Whenever I enable either modem or
> serial port in e.g. NCU, I get an error that the port is busy.
>
> Is anybody using NCU (or NTK) from within BasiliskII successfully? I tried
> BasiliskII 1.0 and the MacOS images on UNNA, and some other images I found,
> no dice…
>
> Eckhart
> ----------------------------------------------------------------------
>
> https://newtontalk.net
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