On Sun, Aug 30, 2015 at 1:08 AM, Guy Sotomayor <g...@shiresoft.com> wrote: > The MEM11 is a multi-function memory board for Unibus based PDP-11 > computers. It contains: > > * 128KW memory > * Emulates console ROM & boot ROMs > * 2 SLUs (DL11s) > * KW11K > * KW11P > * KW11L > * KW11W > * RF11 (emulating up to 8 RS11 disks) > * KE11
Nice collection of features! > The main objective is to provide the memory and I/O necessary > to be able to run Unix V1 I am very interested in the MEM11 for this exact reason. I have a PDP-11/20 that I'd love to do this with. According to http://www.in-ulm.de/~mascheck/various/ancient/index.html Unix v1 requires/supports: "32K, RF-11 + RK03 disks, KE11A module [extended arithmetic element for multiply/divide], DC-11 8 TTYs, TC-11 DECTape" I haven't dug through the device driver code, but I expect that the RK driver would support either the RK11-C (Flip Chips) or the RK11-D (M7254, M7255, M7256 and M7257) since AFAIK they are register-compatible. I have both, but the RK11-D has been tested/used (the RK11-C has a lot of parts and a lot of connections to corrode). At least an RK11-D and one or more RK05s is a lot easier to find than, say, an RF11. -ethan
