ND-110 Satellite 9883.21238

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Revision as of 07:25, 5 September 2016 by TArntsen (talk | contribs) (Disk info)
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Configuration

  • Hard disk: 170 MB Micropolis SCSI disk, SE 50pin, ND designation ND 10 62 80
  • Floppy: 1.2MB 5.25" floppy, model TBD
  • Tape streamer: Tandberg TDC 3640, ND designation ND 11 02 17, serial number 379392
  • Slot 1: 3013 ND100 8-TERM I/F, print: L, eco: N
  • Slot 2: 3094 ETHERNET IF. II - print: E, eco: G
  • Slot 3: 3095 ND110 CPU&MM 48B, print: B, eco: H, 39.3216 MHz crystal
  • Slot 4: 3201 SCSI/FLOPPY, print: B, eco: K
  • Slot 5: 3042 ND100 2 MBYTE RAM, print: B, eco: D
  • Slot 6: 3015 ND100 HDLC W/A.LO. print: S, eco: U (TBC)
  • Slot 7: 3013 ND100 8-TERM I/F, print: L, eco: N

Power Supply

  • Wiener DN 03, 390 W

Labels

SYSTEM 9883.21238
FLOPPY: 187-3784
STREAMER: 229-1282
DISK: 228-1940

The disk itself has label '228-319' though, so it is likely that this is a replacement/upgrade disk. The ND 9883 models are also known as T9, and like the T17 model they were originally spec'ed with 125MB disks. But this one has a 170MB disk as well as an additional terminal board, an Ethernet II board, and an HDLC board (so that all positions are now in use in this particular system). In that sense this T9 system has been upgraded to a T17 system (due to the extra terminal board), with larger disk and extra communication.

CPU

This system has an ND110/II (110 version 2) CPU, with 48-bit floating point hardware.

Operating system version

Currently unknown

TODO

  • Image the SCSI disk before attempting a boot DoneDone

The disk, if working, should contain a version of SINTRAN III. But the system password is presumably unknown, so in addition to getting a backup of the disk, imaging it will also get access to the password.

  • Check the power supply condition, start with the test measuring points

DISK

The disk is a Micropolis SCSI disk stamped with "170MB", but after imaging the disk it's more likely that this is actually the disk spec'ed as 125MB for the T9 and T17 ND 110 Satellite series. The actual capacity is 132MB in 'modern' disk size speak (132 million bytes), but during ND's time the industry hadn't yet changed into the numbers war and the original KB=1024, MB=1024 KB interpretation was still used. So that disk would be 126MB around then, conveniently described as "125 MB". The stamped size of 170MB would be the unformatted size then, which sounds likely after some back-of-the-envelope calculations.

fdisk and scsi info from Linux computer used for imaging: 

Vendor: NDMICROP Model           : 1375   Rev: B0C
ANSI SCSI revision               : 00
Sector size (logical / physical) : 1024 bytes / 1024 bytes
Capacity                         : 132 MB, 132415488 bytes
Disk identifier                  : 0x81ddc629
No partition table

The system password found on the disk is the same as for ND-110 Satellite 988_21251, 'FIXSEG', so it's likely that this satellite also originated from the same place.

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