Use a Serial Console with Mac OS X Leopard Post: 302262270

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Operating Systems OS X (Apple) Use a Serial Console with Mac OS X Leopard Post 302262270 by joecassara on Wednesday 26th of November 2008 11:47:21 PM

11-27-2008

Registered User

Use a Serial Console with Mac OS X Leopard

I'm trying to use an old Commodore 128D as a terminal to access OS X's shell via a serial port. I've used 'screen' and 'zterm' to ensure the two machines are successfully interfaced.

Instructions for opening up the serial console on other Unix-y operating systems don't work with OS X Leopard. My serial port is /dev/tty.usbserial.

* Activating the serial console in /etc/ttys -- No luck

* /usr/libexec/./getty std.9600 /dev/tty.usbserial -- Seem to do nothing

* screen /dev/tty.usbserial -- The Mac and 128D communicate with each other, but a shell is NOT opened on the 128D

I've scoured the internet for a solution to no avail. All I've found are procedues for OS X Server, using SerialTerminalSupport, but I don't have Server.

Any ideas?

joecassara

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mdc

mdc(4) Kernel Interfaces Manual mdc(4)

Name
mdc - DS5100 serial line driver

Syntax
device mdc0 at ibus? vector mdcintr
device mdc1 at ibus? vector mdcintr
device mdc2 at ibus? vector mdcintr

Description
A DS5100 base system (mdc0) provides four asynchronous ports. An optional asynchronous card (mdc1 and mdc2 ) can be added to supply eight
additional ports.

The mdc ports are used as follows:

Port Usage Connector

0 Console port 6-pin MMJ on CPU board
1 Local terminal 6-pin MMJ on CPU board
2 Full modem control port 25-pin D-Sub on CPU board
3 Local terminal 6-pin MMJ on CPU board

An optional asynchronous board provides an additional eight lines:

4 Local terminal 6-pin MMJ
5 Local terminal 6-pin MMJ
6 Full modem control port 25-pin D-Sub
7 Local terminal 6-pin MMJ
8 Local terminal 6-pin MMJ
9 Local terminal 6-pin MMJ
10 Local terminal 6-pin MMJ
11 Local terminal 6-pin MMJ

The console baud rate is set to 9600 baud by default. You can change this by setting the baud environment variable from console prompt.
Each communication port from the serial line controller behaves as described in the reference page and can be set to run at any of 16
speeds. For the encoding, see

You can establish the state of port 2 (port 6) by specifying either modem or nomodem as part of the file entry.

Restrictions
The speed default is to 9600 baud on the console port. The console device must be set for 8-bit character length with one stop bit and no
parity. The driver enforces these restrictions; that is, changing speeds with the command may not always work on console ports.

Files
Console terminal

Full modem control or local terminal

See Also
console(4), devio(4), tty(4), ttys(5), MAKEDEV(8)

RISC mdc(4)