What procsessors use early BOSS systems?

[Jonne]

This question is only for my own interest...
I have a BOSS 6 LSI-board and theres DEC's ( Digital equipment corporation )
chips, but any datasheet search engine doesn't recognize these chips...
Anyone information of these?

Johannes

[machintek]

Try a Google search for a DEC KD11F (4 LSI chips) or a KD11L (5LSI).
I remember seeing somewhere a user group for these as well.

George

[Jonne]

Thanks! Yes, it's KD11 and Micro PDP-11 computer on '70 use same card.
It was own time "supercomputer". Quite wild.
Heres quotation from http://www.oldcomputers.arcula.co.uk/up111.htm

"In 1970, DIGITAL introduced the first PDP-11, the model PDP-11/20. This was a much more powerful machine than the PDP-8. It was a 16 bit machine with 64KB address space, constructed using small scale integrated circuits, core memory, a hard-wired processor and the UNIBUS backplane/interconnect. The PDP-11/20 was followed by other UNIBUS models which offered variations in price and performance."

I search more info, I tell then more, if anyone interested...
Maybe I put that LSI-card to do new job, because retrofit, it's useless by now...

Johannes

[keebler303]

That chip sounds like a $5 PIC to me. I can't imagine there is a practical use for it aside from being a replacement for the same model machine it was removed from.

Matt

[Jonne]

I think make retro style computer that LSI-card just for fun...
Lots of switches and flickering leds...
Theres lots of information about PDP-11 ( and it's card: LSI-11.. ). I found
in internet user manual, pinouts, logic diagrams etc...
It doesn't too hard make that working, I think, because I made working
computer, only using 74xxx TTL-logic chips...

[Jonne]

Here's some data of BOSS 6:

Mem in 8-bit words ( LSI uses 16-bit words...)
Ram 8K
Rom 128K (Quite big OS!!!)