[Simh] DR(V)11-C emulation

[Larry Baker]

I have recently discovered what look like very flexible programmable  
microcontrollers from XMOS (www.xmos.com).  I plan to use their XC-2  
Ethernet versions to emulate a DEC DR(V)11-C interface to an Analogic  
digitizer subsystem we have running off a MicroVAX (for over 20  
years!).  These devices look to be very easy to program, for example,  
to adjust the timing of the data and control signal pulse widths.  I  
recommend anyone that wants to implement either a USB or Ethernet  
emulator of a DEC DR11-type parallel interface (PIO or DMA) device for  
SIMH take a look at these products.

Larry Baker
US Geological Survey
650-329-5608
baker at usgs.gov