From: ibmmuseum@gmail.com   
      
   > > The CPU clock (among other signals) is derived from the 40 MHz    
   > > oscillator U110. The 32 MHz oscillator U159 is used for the FPU (and    
   > > other things).    
   > >    
   > > So, unless the board can be "jumpered" differently to change the clock    
   > > source, I'd say somebody installed an incorrect CPU. Can you measure the    
   > > clock frequency at the CPU CLK pin (or buzz the path out with the help    
   > > of the schematic)?   
   > E1 and E2 above the 32 MHz oscillator are dealing with the clock, but    
   > only allow two configurations - synchronous where the FPU uses the 40    
   > MHz CPU*2 clock, or asynchronous where it has its own 32 MHz source (if    
   > the schematic is correct). I don't see a "jumper" in the CPU*2 path for    
   > the 386.   
      
   I can't remember enough history - but I think I received it as a disembodied   
   planar (and no memory of who put in the CPU and FPU). I may have been testing   
   a CPU 'Reset Signature' (but that doesn't explain the 16MHz FPU). On another   
   tangent, we haven't    
   traced what the solder-pad header (differing in size) is on the Type 1 and   
   Type 2 planars, and the 2-pin jumper on the Type 2.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)