ISO: PDP-11/40 LTC and Stack Limit options

william degnan billdegnan at
Mon Nov 21 14:13:55 CST 2016

On Mon, Nov 21, 2016 at 2:37 PM, Josh Dersch <derschjo at> wrote:

> Hi all --
> I'm finally turning my attention back to my 11/40 (which I started working
> on 7 years ago and never quite got around to finishing -- I've learned a
> lot since then and I'm hoping to be able to debug it properly now).
> My ultimate goal is to run V6 or V7 UNIX on it -- I have the MMU but I'm
> looking for an M787 (line-time clock) and M7237 (stack limit register) to
> complete the set.  I have other DEC stuff for trade, drop me a line...
> Thanks!
> Josh

Just curious, are you aware whether these two are required to boot a RL02
disk or certain versions of RT-11?  I have been experiencing difficulties,
I only have the m737 iinstalled in my system.

More information about the cctech mailing list