Recent content by Robotrontechnik

Germany. Your pictured board would perfectly match to my VAX and the box would also do.

Current situation: About (1): I have -Main rack: CPU, FPU, DW780, 16 MB RAM, MBA RH880, Emulex HDC, power supplies. -four huge hard disks -one 1/2" tape drive Missing components: -At the main rack: board M8272 (part of DW780). (4) -The complete console processor rack. (5) -The UNIBUS rack...

The 780 uses floppy disks to boot the console processor: 8" Floppies at DEC VAX, 5,25" disks originally at my VAX. Would you like to publish a picture of the VAX interface card? The usual boards in the 780's console processor are M7264-YC, M7946, M7940, M8400-EH, M9400-YE. The last one is VAX...

Robotron version. But fortunately the boards are compatible to DEC's. Only the console processor was an own development of Robotron. But there is no chance to get an original one...

I have such a heavy metal computer as an exhibit in my museum, showing three major problems: (1): The machine is incomplete, I'm failing to make it functional again because missing spares. (2): The computer has four hard disks and don't find a way to save its data. (3): I'm still not familiar...

I don't have anything from DEC at my PDP. But I think it does not matter. The software behavior of my 1/8" cassette tape drives is possibly similar or identical to TU58.

A new theme: I can boot my PDP from 1/2" reel tape with a [hardware specific] PRESRV. Because my PDP has also boot-able cassette tape drives, I use PRESRV to copy the system area from reel tape to an empty cassette tape. If I boot the PDP from cassette tape then, the cassette is read until the...

I don't understand, please describe! To me PDP11GUI is a (functional enhanced) replacement of an operator terminal, allowing to connect to a physical PDP (via serial line) or to a virtual PDP (SIMH at the PC via telnet). .TU10 is the format that SIMH expects to mount an image file as a tape in...

Not conflicting. I can handle tapes formerly written by PRESRV without problems: dupe it at the PDP to another tape or transfer it to a PC via PDP11GUI. At the PC I can extract PRESRV image files (.TM10) created by PDP11GUI. But I see no way to transfer the content of this one tape (it was not...

I think I will find a way to log also the block sizes. Lets assume I would have already done it. How would it help for file extraction?

I'm already beyond this point, can boot/run PRESRV, can extract files from such backups also outside PDP. My problem is a little bit more difficult. This is the thing which is technically impossible: I have a a boot-able 1/2" tape (special OS) with block sizes > 51 KByte. I can boot my PDP...

Of course it was. I have dozens of tapes from different previous owners, written with this program. So I would like to dive deeper into this software. The hardware abilities of my PRESRV kernels differ from tape to tape. Is there a way to inspect which drivers are linked in a PRESRV kernel? Do...

Does somebody knows the program PRESRV? Is somebody using PDP11GUI to handle tapes?

I own an AS/400 QIC tape, formerly written with OS/400. Now I've created a dump file of it, via DD command at a UNIX computer. Is there a tool to extract PF's and PFM's from such a dump? Or is there an OS/400 emulator which can mount such a dump?

You see there was no progress in the last 9 years... 14" Hard disks (39/120 MB), functional. 14" Removable disk (2,5 MB), still unrepaired. Paper tape readers, functional. 8" floppy disk drives, controller defective. 1/2" Magnetic reel tape drives, functional. 1/8" Magnetic cassette tape...