I've got a second-hand Apollo 400. Unfortunately I've not got any documentation
for it.

It is a 68030-based box with 16Mb of memory, 600M SCSI disc & 98754A 21" Color
monitor, AUI , BNC and small-SCSI60 connectors are on it's back side. It has no
floppies( it has, but I've got no HP-IB cable.... may be anyone can provide me
a cable pinout & *how* can I connect it to Apollo?)

It says it is

(c) 1990 by HP Corp

BOOTROM REv. 2.0 29 Nov 90
MD REV 2.1 1991/01/10
MC68030 Processor
MC68882 Coprocessor 
Configuration EEPROM
Utility Chip at 41
HP-HIL
  Type R.........
DMA-C0
RAM 16........
HP98644 (RS-232) at 9
HP PARALLEL at 12
HP98265 (SCSI S 32) at 14
HP98643 (LAN) at 21, THIN ..........
Bit Mapped Video at 133 (Console)
.....
Systen Search Mode
RESET to Restart

I've hacked out  how to switch my Apollo from Domain mode to HP/UX compatible.
But it's everything I know about it. :-(

I've got a trouble trying to boot NetBSD SYS_INST to it. I'm using my second
FreeBSD box. I've configured rbootp:
/etc/rbootp
#
#
08:00:09:15:0E:88       SYS_INST      #
#

It runs my ed0 in  promiscuous mode, and there I've got

 21:05:03.764609   Addr:08:00:09:15:0e:88   Intf: ed0
        802.2 LLC: DSAP:f8 SSAP:f8 CTRL:3
        HP Ext:    DXSAP:609 SXSAP:608
        Boot Reply:
                RetCode:0 SeqNo:0 SessID:0 Vers:2
                File Name (5): <sensi>

It repeats continiously & nothing :-( happens with Apollo box.
It looks like Apollo box doesn't see rbootd replyes.
Can you help me? May be I'm pressing incorrect buttons? May be I have to setup
it more correctly? 

Excuse me, if the problem is dummy, I haven't even deal with Apollo boxen.

---
vadik likholetov        
218-9655

Key fingerprint = 41 5C 7C 4B F4 03 40 B9  57 81 0E EF F0 2E 96 A6