N* Question

All, I am working at bringing up a N* Horizon system and have some questions. At present, I don't have any system software and am attempting to determine basic functionality. The box currently has a Z80-A CPU card, HRAM64 memory card and an MDS-AD3 hard-sectored floppy controller (others have been removed temporarily). There are two built-in SA-400 SS 5.25" drives. Other cards that came with the unit include a Compupro bus terminator, A Morrow Disk Jockey 2D/B 8" controller and a Morrow HDCA-4A hard disk controller. Unfortunately, the 8" Morrow hard disk emitted some magic smoke at power up and I have not done any further troubleshooting yet. Anyone know anything about Memorex 8" drive mechanisms? At power up, the system tries to boot the first floppy drive, then gives up after 10-15 seconds. I take this as a sign that some life exists. Then, I connected a PC running ProComm Plus to the left serial port, but cannot get any reponse or output there. So, problem 1: Where are baud rate settings documented? I can find pinouts for assigning signals on the DB25 connector, but not a mention of baud rate. Is it possible to obtain any sort of monitor prompt in the absence of a booted system? Doesn't the floppy controller have some sort of ROM monitor on-board? Any tips for getting a terminal connection operational? I have played with handshake signals a bit, and it sure looks like both parties have the necessary lines in the necessary states for communication to occur. Steve --