Blizzard 30-IV 60ns config problems.

[srg86]

Any 72-pin single or double sided FPM or EDO SIMM will work perfectly on this board. I have a all these types and they all work with mine. Note that althouh EDO SIMMs work fine, the board doesn't take advantage of them.

BTW I tried a 70ns SIMM with my Blizzard 030IV set @ 60ns and I got exactly the same thing as you. You should be able to tell whether the SIMM is 60 or 70ns because either the SIMM and/or the chips will have -70 or -7 on them for 70ns and -6 or -60 for 60ns.

You say that your now getting trouble @ 70ns, sounds like the RAM is bad (always suspect RAM, as RAM troubles on any type of computer can cause *REALLY* odd problems.

You should be able to get 72-pin SIMM from most places, the best (although not the cheapest) place I look for old and slightly odd memory is www.offtek.co.uk.

BTW I also recommend you to use a single sided SIMM as the double sided ones touch and melt the trap door bay cover.

hope this helps
srg

P.S. I've always found buying second hand RAM to be a hit 'n' Miss affair, I was lucky though when buying my Blizzard 1230IV and RAM.

[srg86]

A clean install of Workbench (3.0 in my case) should be as solid as you like. I would recommend that you for now, remove the RAM from the Blizzard and reinstall workbench from afresh.

Oh that's a point, do you get any crashes with the blizzard fitted but no RAM attached to it? If you do then it's the board, otherwise it's the RAM. Still a clean workbench will help, don't come to any conclusions untill you do that. Any troubles, take out the board.

srg