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- From: rla@netcom.com (Robert Armstrong)
- Subject: Re: PDP-8 Collectors
- Message-ID: <1992Nov6.173618.1702@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <Bx946L.KCM@uxa.ecn.bgu.edu>
- Date: Fri, 6 Nov 1992 17:36:18 GMT
- Lines: 54
-
- mgcbo@uxa.ecn.bgu.edu (Charles B. Owen) writes:
-
- >Questions:
-
- >Is anyone else doing this, as just a hobby (not maintaining one for
- >business use)?
-
- I have an 8/A that's currently in storage, although I used to
- run it all the time before I ran out of room to keep it! It has
- two RK05s (an F and a J), RX02, TU56, 32K MOS (I also have a 16K
- core board, but it takes up too much room in the backplane), and
- a real VT52 for a console.
-
- I've also owned a few DECmates and one VT78, but I don't have
- any at the moment.
-
- I also built a system once based on the IM6100 and 6102. It had
- 8K RAM and a cassette tape (that's an _audio_ cassette, Kansas City
- format!) interface. I managed to get FOCAL running on it.
-
- >How available is software that I would not have to pay DEC for? Much PD
- >available? For obsolete hardware, it would almost make sense for DEC to
- >give the stuff away.
-
- There's an archive of some PDP-8 software at telebit.com. Also,
- OS/278 is available, with or without sources, from DECUS. A few
- other PDP-8 software packages are still available from DECUS.
-
- Other than that, DEC isn't giving any software away. They've given
- permission to reproduce hardware manuals that they no longer sell,
- but as far as I know DEC's never given permission to distribute old
- PDP-8 software. I'm sure there's no value in holding on to it -
- probably there's just nobody willing stick their neck out and say
- "It's free!".
-
- >Any problem maintaining these systems? I am very good at electronics,
- >so I can handle anything I can get parts for. But, are there many
- >custom parts that are difficult to obtain? (particularly mechanical
- >parts) DEC still support? (Reasonably)
-
- The later machines, 8/I and after, use standard TTL parts. The 8/A
- had a few LSI chips, like UARTs, in it. I've successfully replaced
- chips on my RK8E controller and LP8E. I still see PDP-8 components for
- sale by some of the used DEC equipment resalers, but not nearly as much
- as there was 10 years ago. Used DECmates are still relatively easy
- to buy from these places.
-
- I've no idea if DEC still sells replacement parts. They'd probably
- be much too expensive to be useful even if they did.
-
- Good luck.
-
- Bob Armstrong
- rla@netcom.com
-