Data General Nova 3 manuals needed

Hi, I have a Nova 3 that I would like to get to know a little better. I do not have any manuals and a quick search came up with a dead end. Info on testing and how to interface to the console port ?? (external term). Is it TTY or RS232 and of coarse which pins or ??? Bruce are you out there ???? ;-) Below is the card lay out Thanks, Jerry Function MFG No. EK No. -12 Transport 4190/4041/4044 063-130 -11 FMDET 4190/4041/4042/4044 063-147 -10 <- B side oneida, Vanes A side -> MBD 4042 063-131 -09 -08 Disk Cartridge Controller DG 6030 -07 -06 -05 Mos Memory DG 8543 -04 Cassette I/O DG 4075 4077 4078 4079 -03 Mos Memory DG 8543 -02 Nova 3 Triple options bd. DG 8553/8531/8535 -01 Nova 3 CPU DG 8530/8531 W/ARST. APL