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Hi all, I have a PET 2001-8 with random characters on screen. The PETTESTER rom says that the lower 4 roms and the lower 1K of ram are OK. The machine have all ram and rom original with importer's stickers. I will try to save them but when i cannot browse the memory it will be a hopeless task...

Hi All, I have a 9600 9-track tape transport from Kennedy with the following problem: When i put a tape in and pressing the load button then the display shows "loading" but notthing more goes on. Then when i press unload the tranport locks the door, turns the tape a bit back and releases the...

Hi All, I I had buyed a Vector Graphic Vector 4 computer for restoration. It needs a repair of one of the drives (missing drive door rod, separated metal/plastic chassis) and cosmetic repairs on the housing. The machine works, but the main problem is a missing keyboard. I will try to get an...

Hi All, I hab buy a Vector 4 for restoration but these machine has no keyboard yet. I' m searching for a original keyboard or an adapter for a replacement for the beginning. There is a 6-pole RJ Socket. Thank you, Braids

Hi All, I have ordered a Shugart SA801 and plan to connect it to a CoCo2 via a rebuilt and modded (TG43 signal!) controller with WD1773 to create capability for formatting (partially) bulk erased disks. Can a CoCo, switched to 1.78mhz, generate enough data rate to feed the WD1773 trackwise...

Hi all, I'm searching for a 8" floppy drive to build up reformatting capability for RX01/RX02 diskettes with erased track 1, e.g. a shugart SA-801 or SA-851 Best Thanks, Braids

Hi All. I've got a medium for RL02 with a missing dust cover. Does anyone have a left over one (e.g. from a broken medium) ? Answers please with P.M. Thanks, Braids

Hi all, I has a problem with a RL02 cartridge carrying RT11 V4. The directory will be shown with the DIR command but the files are no longer accessible. When i make an init/badblocks then a table with foul blocks, 20(decimal) the lowest will be displayed and then the error "Directory input...

Hi all, I'm searching for RX02 floppy interface DEC M8256 (PDP11 unibus) and DEC M8357 (pdp8a, Omnibus) best thanks, Braids.

Dear Users, I've got a Power Supply PCB of a Wang WLTC with R43 totally cooked. Can be the charging resistor because the Laptop doesn't charge the accu. Does anybody have a Hi-Res picture of such a board with readable rings? the resistor sits when the broad cable is upright lower between L2...

Hi All, I plan to bring alive a Interface standards IS-11 PDP-11 qbus to Camac adapter inside a LeCroy desktop Crate and have the following questions: 1. Does anyone have manuals or a working system? I got this adapter 25 jears ago together with a couple of 5 1/4 drives. I haven't found yet...

Hi All, I've tried to transfer a RX211 with RX02 from a PDP11/84 to a PDP11/04. When it works in 11/84 it boots without problems, but in the PDP11/04 (core) then the RUM light remains ON same time as a forgotten G727A or an open NPG. When i remove the M8256 and put a G7273 on that slot 6 then...

Dear users, I've got a CBM720 fitted with an original MOS 6545A-1, unfortunately unsocketed. When i check the video outputs, all three signals remains high. I've also checked data input with a logic analyzer but no failure found. The question: does i reduce the worth of the machine when i 1...

Hi all, I have a 68000 / Z80 hybrid from Sord (Japan) and wish them to expand the memory of the 68k part from 256k to 1MB. The machine does have 3 card edge slots for the 68k part and 2 slots (meant 100s) for the Z80 part. Since no more cards are available and the machine seems to be rare i...

I've got an old Wang OIS-50 without any documention and disks. Since there was no original harddisk (probably shred) inside I fitted a seagate ST225. When I switch on the machine with a workstation on one of the IWS ports (4 available) then the screen shows random blinking stuff but none to...