Boot Rom for KDF11-BA

On Oct 11 2004, 3:51, mehditk2(a)juno.com wrote: KDF11-B3 isn't one ROM, it's an upgrade kit consisting of two EPROMs plus instructions. It's more usual to refer to the ROMs themselves by the actual numbers or the processor suffix. The ROMs in the -B3 kit are 23-183E4 and 23-184E4, as far as I remember; that's the -BF version, but most versions of the KDF11 ROMs work with MSCP devices. For example, people have used RD31 drives on an RQDX3 with -BE ROMs, although it wasn't officially supported until -BG. The next version was 23-380E4 and 23-381E4, which would make the processor a KDF11-BG. There's a list of ROMs at http://www.dunnington.u-net.com/public/DECROMs/ (see the file called ROMlist). You can see which revisions officially support various MSCP devices in Micronote 43, which you can find in various places including http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/hardwar… BTW, the EPROMs for a KDF11-B are unusual 24-pin 8Kx8 devices; normal 2764-style 8Kx8 devices will not do because they're 28-pin. -- Pete Peter Turnbull Network Manager University of York