With a little configuration, it's possible to use a dumb terminal connected to a minix host. Alternatively, one could connect a PC to a minix host via a null-modem cable and run a terminal emulator program on the PC to act as a dumb terminal.
On the minix host edit /etc/ttytab. The tty00 and tty01 lines should be edited to look like this:
tty00 vt100 getty "stty 9600" tty01 vt100 getty "stty 9600"
You may want to change the above entries to “stty 115200” to set a higher baud rate.
Then reboot the system with shutdown -r
Connect the terminal or null-modem cable to one of the serial ports on the minix host. Press enter a couple of times on the terminal and the login prompt should appear. Log in and have fun.
GNU Screen can be used as a terminal emulator on a Linux PC connected to a minix host via a null-modem cable with no setup needed.
In case you're wondering about ttyUSB0, it's a USB-to-serial adapter. Using /dev/ttyS0 should also work.
You may also use
cu -s 9600 -l /dev/ttyUSB0
The '-s' option sets the baud rate, so you can change this to 115200 if you prefer.
make world 1> /dev/null * Don't set 'ctty 0' for serial debugging.