View source for ND-110 Satellite 9883.21238

An '''[[ND-110 Satellite Series|ND-110 Satellite]]''' model T9, upgraded to T17, donated by [[User:Gandalf|Gandalf]].

=== Configuration ===
* Hard disk: 170 MB ''(126MB formatted)'' 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 ===
<pre>
SYSTEM 9883.21238
FLOPPY: 187-3784
STREAMER: 229-1282
DISK: 228-1940
</pre>
The disk itself has label '228-319', 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 ''(probably unformatted capacity though - see below)'' 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 extra communication.

=== CPU ===
This system has an ND110/II (110 version 2) CPU, with [[48-bit floating point]] hardware (note the ''''48B'''' on the 3095 CPU board designation)

=== Operating system version ===
SINTRAN III/VSX version K patchlevel 10200B

=== History and trivia ===
* The last time the system was booted appears to be at 23:09:33, 21 August 1994.
* The boot process took 6 minutes and ten seconds.
* It may have been shut down at 23:24:48 the same day, but this cannot be verified.
* This system was part of a network of many remote ND computers, and [[User:Tingo|Tingo's]] [[ND-110 Satellite 9883.21005]] was also a member of this network.
* It is likely that [[ND-110 Satellite 9883.21251]] was also part of this network, as its configuration files include the CPU of this system (21238) even though 21251 isn't mentioned in 21238's configuration. And they share the same system password, which is another clue. But it's possible that 21251 was decommissioned a couple of years before 21238, and that's why 21251 isn't part of 21238's configuration.

=== DISK ===
The disk is a Micropolis SCSI disk stamped with "170MB", but after imaging the disk I see that it's more likely that this is actually the disk spec'ed as 125MB for the '''[[ND-110_Satellite_Series#ND-110_Satellite_model_T9.2FT17|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 Micropolis 1375 disks can still be found on ebay and even (much more expensively) on Amazon. It's often described as '145 MB formatted', or '153 MB formatted' or something else, but pictures confirm that these drives have the same '170MB' stamp on their printed media defect table. So it's the same drive. Specifications can be found '''[http://www.mfarris.com/hard_drives/micropolis/micropolis_1375.html here]''', and a PDF file is on '''[http://bitsavers.informatik.uni-stuttgart.de/pdf/micropolis/101689d_1370.pdf bitsavers.]'''In the latter document we find that formatted capacity would typically be 150MB with 1024 byte sector size and 146MB with 512 byte sector size. However, from the same document it is also explained how to calculate the formatted capacity with various options. It looks like ND used a very conservative setup with 3 spare sectors per track (the maximum), and possibly 10 spare cylinders. That leaves us with only 96 sectors not accounted for.

The disk was advertised at $2295 w/PC controller in 1988 (source: Infoworld, Mars 7 issue, 1988).

The system password found on the disk is the same as for [[ND-110 Satellite 9883.21251]], 'FIXSEG', so it's likely that this satellite also originated from the same administrative unit.

=== TODO ===
* Image the SCSI disk before attempting a boot {{done}}
* In addition to getting a backup of the disk, imaging it will also get access to the password {{done}}
* <strike>Make a C15 power plug by violently abusing a C13 plug</strike> Acquire a C13 to C15 power plug adapter {{done}}
* Check the power supply condition, start with the test measuring points. {{done}} Measures perfectly.
* Make a cable for the console terminal {{done}}
* Disable UE-LOGIN so that I can actually log in {{done}}
* Set up a wi-fi console connection. By chance I found a basically NOS current-loop to RS232 converter on ebay (on a 1 euro bid), so the plan is to use that one and a serial-to-wifi converter to give me remote console access.
* Start testing SCSI2SD as an alternative to the physical disk.
* New: Fix the keyboard of the Nokia Notis-terminal to make it usable again.
* New: Try to figure out what's going on with the front panel. It doesn't work properly.

I didn't notice right away that the computer needs a power cord with an [http://www.yunhuanelectric.com/Clkj_Images/upfile/Bigpic/IEC-320-C15-Indonesia-power-cord.jpg IEC 320 C15] power plug, which I <strike>don't</strike> didn't have. I don't think I've seen one of those ever used. But I hacked a normal C13 into the same shape, so I'm OK for now. I also got a C13-->C15 adapter  from Hong Kong, it arrived surprisingly quickly. Looks great, and it lets me use any standard IEC 320 power cable.

=== Status ===
Booted, after setting the memory card thumbwheel to 0 0 0.

The system is a bit difficult to power on, for some reason. It needs two or three tries before the console or the front panel buttons respond. After the second or third time I can press the rightmost button followed by the leftmost button and get the front into 'advanced' mode (where it shows 'macl', 'opcom' and 'load' buttons).  After the first power on the START and STOP buttons are lighted up, but nothing responds. Power off, wait a bit, power on, and the front panel and console works. Strange.
I don't have an ND test floppy so I can't boot from floppy and test the system (well I have a bootable SINTRAN install floppy, but I don't want to boot that one). 

Unfortunately, User Environment is enabled on the console, and the normal system password doesn't log me in. So I'm still a bit stuck until I figure out how to bypass UE. I should have a UE manual somewhere, but due to time constraints it will have to wait for a while.

As of 2020-04-09 the Nokia terminal keyboard has developed some issues, some keys  stuck easily, the space bar in particular. This creates challenges when I'm using PED to edit files. Still managed to edit a little in LOAD-MODE:MODE today, but I have to do some maintenance on that keyboard.
The computer itself has some problems booting, today I managed to boot it once (and then everything looked normal), but tries both before and after failed. It just didn't boot, no output. The front panel clearly has some problems, I can (usually) get MCLR to work (master clear), but LOAD doesn't seem to work. So I have to look at this as well. Disk is a bit noisy and I really would like to get SCSI2SD working, particularly as it could be difficult to find a usable spinning rust hard disk, ref. those 1024 sectors etc.