SNI Monitor

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SNI Monitor is a big-endian firmware for the Siemens Nixdorf RM-400 server (and others).

Boot process

SNI Monitor loads a secondary bootloader dkncr(0,0,10)sash which loads SINIX's dkncr(0,0,0)unix file.

SINIX uses System V slices :

  • Slice 1 - root file system
  • Slice 2 - swap
  • ...
  • Slice 10 - boot slice with BFS (Boot File System)


API

Bootlog

SNI Monitor    Version 2.0018 SNI_R4000 OPT Wed May 25 11:39:36 WET 1994 liva20r
Memory size: 128 MBytes (0x8000000 bytes)
Bank #0:  64 MBytes             Bank #1:  64 MBytes
Bank #2:   0 MBytes             Bank #3:   0 MBytes
CPU : R4400  SC, Revision 5.0
Primary I-cache size: 16384 (0x4000) bytes
Primary D-cache size: 16384 (0x4000) bytes
Secondary cache size: 128 Kbytes (0x20000 bytes)
>> dkncr(0,0,10)sash
297872+130048+628272 entry: 0xa0600000
SNI Standalone Shell Version 3.0003 SNI_R4000 OPT Thu Jun 23 13:30:39 WET 1994 livsa542

Loading dkncr(0,0,0)unix
2128236+873536+557808 entry: 0x80021000

SNI  RM400
UNIX(R) SINIX-N Release 5.42 Version A0007