scott@csis.dit.csiro.au (Scott Milton) (04/12/90)
Dear Net.users, Problem: DECStation 3100 does not recognise extra 16MB of third party memory. Details: Memory is "Dataram", purchased from a local supplier "Kairinsky". The DECStation originally had 8MB of memory, and now has 24MB. Useful diagnostics are: >>> test -c MEM 24Mbytes >>> auto loading rz(0,0,0)vmunix Ultrix Workstation V2.1 (Rev. 14) System #4 ... real mem 8388608 avail mem 5558272 I've tried a few bizarre things, such as reconfiguring the kernel, using the kernel from a 16MB machine, booting off another disk which serves a 16MB machine, and the result is the same. I've also run a thrashing program (random accessing a configurably large memory array) to test how much memory is being used, and verified that the machine is actually only using 8MB. Some of the old Suns needed to have their eeprom values changed when more memory was added, but this in not in the manuals, and nobody I've talked to locally thinks this is likely. Any suggestions, however slight would be appreciated, Thanks for your time, -- Scott.Milton@csis.dit.csiro.au Phone +61-6-2750923 Fax +61-6-2571052 CSIRO Division of Information Technology, ANU, Acton Canberra ACT AUSTRALIA.