On Wed, Sep 7, 2016 at 5:31 PM, Pete Turnbull <p...@dunnington.plus.com> wrote: > On 08/09/2016 00:37, Glen Slick wrote: > >> Basically this boils down to having the MXV11-B2 Boot ROMs installed >> on either an MXV11-B or MRV11-D. The MXV11-B2 Boot ROMs are apparently >> not compatible with the BDV11, for reasons I don't remember 100% off >> the top of my head. > > Too big. They're a pair of 8K ROMs, but the BDV11 only supports 2K and 1K > devices. >
I thought there was something else beyond that, maybe the ROM windowing scheme was different or something like that. If it is really nothing more than the size of the MXV11-B2 ROMs of 8Kx8 being too big, then maybe it would work by splitting the ROM images across 2Kx8 EPROMs. People have been successful putting the KDF11-BG ROM images on a BDV11 for use with an M8186 KDF11-A by splitting the two 8Kx8 images across eight 2Kx8 2716 EPROMs. http://www.vcfed.org/forum/showthread.php?24754-Qbus-Memory-cards/page2 I have been meaning to try that myself sometime.