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SomeGuy
April 26th, 2015, 12:10 PM
As I mentioned a while back, I have been reading in some 8-inch disks that were once used with an 8086 based CDC/Altos system. Most of them apparently had a nasty run-in with a degausser, but I was able to recover a few that escaped this fate.

I have posted the end results of the recovery process here, in case it might help or interest anyone: http://s000.tinyupload.com/index.php?file_id=27670469001708425889

It contains mostly Xenix binaries, and some Business Basic sample files. There are two possible boot disks (no way to test) that I have provided in ImageDisk format. The rest, due to various futzing with the disk images, I have just provided as TAR files.

The TAR files were created by concatenating the data sections of an 8" floppy disk backup set.

This contains:
------------

Cdc114dg.imd "Diagnostics for CDC-114 20M":
This disk was archived using a Kryoflux, decoded with the PCE tools, and converted to IMD.
This disk image uses 128 byte HD MFM sectors, which requires a special floppy controller to write.

x22root.imd "Xenix 2.2b Root - for CDC-114 Altos 8600"
This disk was archived using a Kryoflux, decoded with the PCE tools, and converted to IMD.
This disk image uses 128 byte HD MFM sectors, which requires a special floppy controller to write.

Xenix full dump (7-10-1984).tar:
This appears to be a full backup of a CDC-114/Altos 8600 system.
There were a few bad sectors on disk 4 of the backup set, so a few files will be corrupt.
According to the label, archiving at disk 6 was "restarted" for some reason.
There are also some file names that can not be extracted on a Windows system.

Damaged files appear to include:
/bbqa/cdbc/io2.bb
/bbqa/cdbc/pf1.bb
/bbqa/src/kadd3.bb
/bbqa/src/lkadd2.bb
These are all business basic source code text files.

spar (5-7-86).tar
This appears to be an archive of a "sparse file archiver"
This was read with no errors.

Xenix 2.2b - Runtime Utils.tar
This is an archive of Xenix binary tools for Xenix 2.2b.
This was read with no errors.

Xenix 2.2b Dev Utils.tar
This is an archive of Xenix binary development tools for Xenix 2.2b.
This was read with no errors.

Al Kossow
December 5th, 2016, 08:09 AM
I have posted the end results of the recovery process here, in case it might help or interest anyone: http://s000.tinyupload.com/index.php?file_id=27670469001708425889



could you put these back up somewhere?
I just bought an 8600 and would like to try installing a system on it

SomeGuy
December 5th, 2016, 09:14 AM
There is a copy of it here: Xenix 2.2b CDC-114 Altos 8600 files.zip (http://toastytech.com/files/Xenix%202.2b%20CDC-114%20Altos%208600%20files.zip)

I'd be interested to hear if those work. I don't know if there were any hardware differences in the Control Data Corporation branded version that these came from.

Al Kossow
December 5th, 2016, 09:20 AM
There is a copy of it here: Xenix 2.2b CDC-114 Altos 8600 files.zip (http://toastytech.com/files/Xenix%202.2b%20CDC-114%20Altos%208600%20files.zip)

I'd be interested to hear if those work. I don't know if there were any hardware differences in the Control Data Corporation branded version that these came from.

thanks! will dig into the machine today.

Al Kossow
December 6th, 2016, 05:24 AM
thanks! will dig into the machine today.

The machine works, after replacing the 8" floppy drive. The diagnostic floppy boots.
Amazingly, the Xenix (2.3) booted, but the drive stopped working as I was tarring off the file system
I have another drive which I'm going to test to see if the controller (same one as used in the 8500)
or the drive stopped working. Current hangup is the hard disk formatter tells you to call Altos before
formatting, asks for confirmation, then just returns to the menu if you type (y, or Y, or Yes) so I need
to paw through the binary and see if there is a magic word in there somewhere.