I have not opened up ours yet but I always assumed they were all DEC boards. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/9/2016 7:36:05 P.M. US Mountain Standard Time, glen.sl...@gmail.com writes:
On Tue, Feb 9, 2016 at 6:08 PM, Richard Cini <rich.c...@verizon.net> wrote: > All — > > I picked-up a Heath H-11 machine the other day and it has a single 4kw memory board. From my prior experiences with DEC (an 11/34a many years ago; now at the RI Computer Museum), I know my way around the field guide…but I’ m having trouble trying to identify the correct module number suitable for the LSI-11 CPU. Even though it’s a Heath machine, I assume it’s module compatible with DEC. Any help would be appreciated. Thanks! > > Rich Maybe an M8044 MSV11-D (no parity) or M8045 MSV11-E (parity) would be most appropriate. They came in 4KW, 8KW, 16KW, and 32KW flavors. http://manx.classiccmp.org/collections/antonio/dec/msv1dop1.pdf Fairly common on eBay.