From: lharr...@gmail.com   
      
   On Wednesday, June 28, 2023 at 10:04:33 PM UTC-4, William Murray wrote:   
   > I'm trying to upgrade the SIMMs in my 8580 with Reply Turbo Board with 16MB   
   ones, but every single stick I have gives me random NMI (parity) errors. All   
   my sticks are 9-chip 60ns Kingston branded. I've tried both parity and ECC   
   (separately of course,    
   both are supported according to the manual). There's no way I have more than a   
   dozen dead sticks, so there must be some some sort of compatibility issue   
   here.    
   >    
   > As far as I can tell, the fastest this motherboard takes is 70ns. Is it   
   possible the ram is somehow unsuitable because it's too fast? Or is it   
   possible that the motherboard doesn't like the chip configuration that these   
   sims use (9-chip vs. 12-chip,    
   etc)? The motherboard works totally fine with the original 12-chip 70ns 4MB   
   sticks, so I don't think the planar is broken.    
   >    
   > Anyone have any idea what could be going on?   
      
   I have a Model 80 with a Reply TurboProcessor also, I actually picked it up   
   via eBay from Greg Frantz who's posted on here in the past.  It sits under the   
   same desk that has my main gaming rig on it and I use it often.   As far as   
   the 128MB ram battle, I    
   have fought this battle for a long time... and continuously lost as well. It   
   has been an expensive one......  I've even tried a bunch of 16MB SIMMs, FRU   
   43G1796, 60G2950, even tried EOS RAM, FRU's 11H0622 and 11H0647... all the   
   same thing.  Instability.     
    I worked hard to find cheap EOS RAM because I've seen pictures of this board   
   populated with it and was super disappointed.   
      
   I did a lot of searching of this news group and I'd be surprised it if it was   
   ever working right with 128MB.   I'd have to find it it somewhere, but I swear   
   I found a comment somewhere that mentioned received a 128mb kit from Reply   
   directly and it still    
   didn't work.   Right now I have it reliably working with 8MB SIMMs at 64MB and   
   found a 128kb L2 cache for it on the internet.  I also found that there is a   
   Reply BIOS and reference disk and an IBM branded BIOS and Reference disk, but   
   the IBM one is much    
   more stripped down.   Not sure if the RAM support is more stable and didn't   
   want to chance it.   I'm currently running the 1.38 Beta that correctly   
   identifies the POVD83 as 84Mhz.    I have also tried these SIMMs with a   
   Kingston Turbochip 133 and an    
   Intel 486 Overdrive (DX4OPDR100) with no improvement in stability.     
      
   What CPU are you running with yours?  I'm run the Pentium Overdrive 83Mhz, but   
   it's about 30% slower than the same Pentium Overdrive running on a PS/2   
   Valuepoint.    Speedsys is like 41 vs 60 on the Valuepoint.  Other bench mark   
   utilities show the same    
   differences... even against Youtubers randomly benchmarking the POVD 83 on   
   whatever rando machine they are benchmarking.   It really makes me think this   
   board is slow which... it has the Syncrostream controller that the 95's had.    
   So what gives?   Louis?    
    David?   How can the PS/2 Valuepoint 6382 K51 (http://ps-2.kev0   
   9.com/pcpartnerinfo/ctstips/3aa2.htm), with the same Pentium Overdrive, or any   
   other generic ISA board whoop it's ass, by a third?     
      
   I'm still experimenting with the onboard IDE, but it seems like the Spock and   
   Adaptec AHA-1640 are the best SCSI cards for this board.   I haven't been able   
   to find a fairly priced BusLogic card.    
      
   Sorry I went on and ranted a bit hahaha   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)