lloyd@Axecore.COM (Lloyd Buchanan) (02/27/91)
Just took a pile of 4MB simms and installed them in the last 8 slots of my 8MB 040 cube to create a 40MB machine. The new simms are 9-chip parity simms and the cube absolutely refuses to boot with parity and non-parity simms mixed. 1) Can I disable the mixed memory checking and run without parity? 2) Does someone make a tool for removing simms? My two-little-screwdrivers-over-the-holes method is a pain. I would RTFM but the system won't boot :-( Thanks -- Lloyd Buchanan lloyd@Axecore.COM Axe Core Investors uupsi!axecore!lloyd Axe Castle (914) 333-5226 (phone) Tarrytown, NY 10591 (914) 333-5208 (FAX)
eps@toaster.SFSU.EDU (Eric P. Scott) (02/28/91)
In article <1991Feb27.140213.12201@Axecore.COM> lloyd@Axecore.COM (Lloyd Buchanan) writes: >1) Can I disable the mixed memory checking and run without > parity? Which ROM version do you have? With 2.1 (v59) it's apparently not possible. With 2.2 (v63) there's an NVRAM preference (type `p') that controls this. I don't know if there are any "intermediate" versions out there. We only have one '040 cube at the moment (where are our other upgrades?), and it has 2.2 (v63). >2) Does someone make a tool for removing simms? My > two-little-screwdrivers-over-the-holes method > is a pain. Someone must, since NeXT's '030->'040 upgrade kits include one. -=EPS=-
rob@lighthouse.com (02/28/91)
Lloyed Buchanan writes: >1) Can I disable the mixed memory checking and run without > parity? Yes, I've been doing this for quite some time on my 040 cube with 8 parity and 8 non-parity SIMMS. As Eric P. Scott indicates there will be modifications to the ROM Monitor that allow you to tell your cube you don't care about parity memory and this will allow us to still perform the memory check. Rob Kedoin rob@lighthouse.com Lighthouse Design, Ltd 6516 Western Avenue Chevy Chase, MD 20815