The Nanokernel log seems to default to a serial connection, New World Macs with a builtin modem should be able to output the Nanokernel log over the Modem port using a serial connection.
So let's see if we can figure out how to do that.
If this were an Old World machine, it would be easy, but we should be able to do it on a New World machine too.
I can't find the old Tech Note on Old World Two Machine debugging, so I don't remember how to setup the connection in the Terminal Emulator( ZTrem ) DATA Rate, DATA Bits, Parity?
If we look at a New World Machine with a builtin modem, here is what we can see:
input-device-1 scca
output-device-1 scca
0 > dev scca .properties
name ch-a
device_type serial
compatible scc-audio-control
chrp,es2
built-in
reg 00013020 00000001
00013030 00000001
00013050 00000001
00008400 00000100
00008500 00000100
interrupts 00000016 00000001 00000005 00000000 00000006 00000000
interrupt-parent ff954898
AAPL,clock-id 73636361 73613331 73613435
AAPL,clock-data 01de2000 00000038 00000054 00000000 00000000 00000044
00000800 00000044 00000010 73613435 73623331 012ad400
02b11000 00000038 00000050 00000038 00000004 00000044
00000400 00000044 00000004 73613331 73623435 00000000
slot-names 00000000
I'm sure there is some way to invoke scca without changing it to the first input and output device, maybe we can find what that is, however just changing it should work too.
setenv input-device scca
setenv output device scca
Now when we invoke Open Firmware, we should have a Serial Connection, I just don't remember how to connect with ZTerm?
What kind of cable do a need for the RJ45 jacks?
I should be able to go RJ45 to RJ45, I just never did it with serial.