SIMH for VAX has been hung up for more than two years now due to lack of documentation on I/O. (It ran the HCORE diagnostic in the spring of '99.) I would like to emulate a CVAX based Qbus system (eg, a MicroVAX 3000) so I need, in particular, - VMB code - specs for the system support chip (CSSC) - specs for the Qbus adapter chip (CQBIC) - specs for the disk controller (RQDX3 or generic MSCP controller) - specs for the Ethernet controller (DEQNA or first chip based controllers) The rest of the peripherals will be standard - LP(V)11 for line printer, DZ(V)11 for multiple terminals. Thanks, /Bob Supnik