Fastest PDP-11 = SBC Computer Wire-Wrap design1985-86

VIDEO #1 : Prototyp PDP-11 Single-Board Computer ( SBC ), 1985-1986. One of the fastest PDP-11 and may be the fastest one worldwide. Please note: Fast in this case means related to the year ~1985. The whole design is in wire-wrap technology. This video should show you the technology how prototyping was realized at this point in time. System was restored 2007 and is now up and runnig again. Of course, we can't compare this computer with a real PDP-11 because a real PDP-11 did have much more dependences. Anyway, this Computer works as designed: Fast ! Same clock Speed, same J-11 chip compared to: 11/73:47% faster, 11/83:43% faster. This feature was optained by using very fast static RAM'S and a special logic, which did provide the J-11 CPU the illusion to run always in Cache mode. Anyway, the PDP-11 time is over and now it's just a souvenir with a lot of nostalgia.
Background: I was a happy DEC employee 1977 to 1993. Primary, I enjoyed the "Ken Ohlsen" area but I lost all my connection to the US engineering people. I use to channel and hope to get in contact with some people to share information. I appreciate every comment/concern.
Notice : PDP-11 is/was trademark from digital equipment corporation.
Author: Reinhard.Heuberger@gmx.de

Category:

Science & Technology

Tags:

• Fastest
• PDP-11
• PDP11
• J-11
• DCJ11
• DEC
• Wire-Wrap
• SBC
• Computer
• historical
• vintage-Computer
• Reinhard
• Heuberger

[PDP11GY]

There was no operating system like Unix running . Ony programs written in Micro_Power_Pascal or in MACRO-11 assembler could be downloaded to my system.

[hadr0n]

But will it run Doom? ;)

[PDP11GY]

@hadr0n No Doom :-)) sorry

[levogiro]

Please... where did you found the J-11???????

That's a piece of electronics worth being worshiped!

[PDP11GY]

@levogiro The assumtion to get a DCJ-11 chip was very simple. I was a DEC employee from 1977 to 1993, also working for the local PDP-11 engineering team. More infos on my homepage.

[bootnecklad]

It was your videos that helped inspire me to build my own TTL CPU! I am still building it but you can see videos of it so far!

[PDP11GY]

@bootnecklad Wish you good luck and success for your project. It gives me pleasure that I could inspire you !

[douro20]

@andh00

But isn't the 68000 actually faster than a J11 or T11?

[andh00]

@UserNumber3141592653 The operating systems used on PDP-11 series were: RT11 RSX11 and VMS (and XXDP for diagnostics). The instruction-set of the processor is basically the same as the Motorola 68000 microprocessor

[Serpico261]

can i ask a question regarding your wire wrap board?

[UserNumber3141592653]

Do you run unix on it or vms? (I believe those were the two operating systems used on PDP-11 machines, but I'm also young so please correct me if I am mistaken)

[GalaticTG]

@TheEPROM9

True that.

[TheEPROM9]

@GalaticTG The more space you have, the more shit you fill it with.

[stmbaah]

nice video! music also great

[Serpico261]

@PDP11GY hi there, where do you get this board like you have??

[GalaticTG]

4:06

When I got my first 500Mb HDD I though to myself. I'll never run out of space. When I got my first 1Gb Hard drive I though I would never run out of space.

I just bought a 1Tb hard drive and figured it'll be full in a month :D