I think I may have a faulty ISY b/c while I was able to connect via serial one time, I am not able to consistently connect. Sometimes I can see the ISY boot up output on the serial while other times it doesn't output anything. On one try, I received this output when I rebooted the ISY:
Unimplemented line-f opcode FMT =00 SR =2708 FS =00
Faulted PC = FFC00534D0:0200B220FMT =FMT =00
On another try:
Universal Devices NBUD-70-100 Monitor V1.0 Jun 13 2007 15:27:39
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nb>2DFMT =06 SR =FD6A FS =0B
Faulted PC = 200007FC
D0:8BE988D2 00000004 00000041 FFC50005 35B7BB23 00000000 FFFF3CBC 8153C97D
A0:FFC01157 0206C309 FFC002E4 FFFFFFFC 0000002F 98B7FD6A 200007FC 200007F4
Waiting 2sec to start 'A' to abort
Error Checksum Fail
No Valid app
Universal Devices NBUD-70-100 Monitor V1.0 Jun 13 2007 15:27:39
HELP for help
nb>