On 2014-05-22 14:06, Cory Smelosky wrote: On Thu, 22 May 2014, Cory Smelosky wrote: On Thu, 22 May 2014, Cory Smelosky wrote: boot [1,54]rsx11m.sys SYSTEM FAULT DETECTED AT PC=042714 FACILITY=000300 ERROR CODE=000110 CRASH -- CRASH DRIVER NOT LOADED After disabling parity this is what it does consistently. @004620/000776 Do I have a bad memory board? It's far, far too late to return this one... With parity disabled and RSTS/E: https://ghostbin.com/paste/ksd3c a bad ~50K? I can disable everything above 512kByte which is...i forget how many words. 512Kbytes is 256Kword. :-) But it's not clear that the address are in Kwords... Johnny