From: lharr...@gmail.com   
      
   On Wednesday, July 5, 2023 at 9:29:08 AM UTC-4, William Murray wrote:   
   > That’s a bummer. I guess maybe 128MB is impossible. I was beginning to   
   think it was because I used 9-chip SIMMs with quad-CAS parity chips, but it   
   seems like you tried 12-chip parity SIMMs and yours still didn’t work.   
   It’s strange; I feel as    
   though stability decreases over time, but if you give the RAM sticks a rest,   
   they go back to being more reliable. Kinda like CPUs when they overheat/get   
   overclocked. I wonder if something like a memory controller could be   
   overheating (IDK if these boards    
   have such a thing)?    
   >    
   > I’m just using the board how I got it for now (486DX2-66, no cache). For   
   storage I have a 2MB Spock with an IBM DPES-31080 HDD. I’ve tried other CPUs   
   in it though, with no change in reliability (Overdrive ODP DX2, 5x86 AMD &   
   Cyrix). Maybe I should    
   also test 25MHz vs 33MHz bus speeds though. I also bought a Pentium Overdrive   
   and 128kb cache module and they’re on their way, so if you’re curious   
   about comparing benchmarks I can do that too.   
      
      
   Not sure but yes I've noticed that with the EOS RAM.  It works fine and then   
   dies after a while. Wonder if a thermal camera would help? Haha.      
      
   Really surprised you found a 128kb cache module!   I searched a long time and   
   ended up buying a Honeywell PLC board, that wasn't listed for $14,000..... on   
   a make an offer... I still really over payed for it...   Did you happen to win   
   Betty's auction    
   with the NCR processor board?  That had the cache card and I was considering   
   bidding to have an extra or to hold onto for someone who had a reply board.  I   
   would definitely be interested in comparing benchmarks.     I've also been   
   having a difficult time    
   finding compatable 1mb SIMMs for the Spock.   I use a ZuluSCSI RP2040 with the   
   Spock using a 3.5 bay mounting adapter:   https://ebay.com/itm/304399284311   
      
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