DSP Software

The dsp can be tested without detectors connected to it. The dsp came with a loop-back cable that connects to the upper connecter of the low-level card (the small card that sticks out of the VME crate). The dsp pattern has a 8-bit wide output file that is used to generate a bit pattern. The fifo is filled from a file and the loop-back cable connects the fifo output with the data input, and therefore looks like data from a detector. The file mainTest.cpp contains a small program that reads the bit pattern from a file, executes the fifo ten times and reads the dsp data into the local memory of the computer. The fifo is used only for testing the dsp, but not for running the beam test modules.

Down load the file patch1.tar. It contains the files messages. It contains four files:

mainTest.c

main program used together with the loop back cable.

messageMem.c

functions to send messages to the dsp. There is now a version number at the beginnig of the file. Version 1.0 or higher is needed for the main program mainTest.c

messages.h

The header file for messagesMem.c. Also contains a version number.

test.cb

Bit pattern that is read and loaded into the output fifo.

If the program runs correctly the output should be (for our PC-VXI system) :

  VXI lib open:  
  io base address: 1a20000
  memeory for message base allocated 
  length:  80000    base  1b60020
beginning initialization
Using DIP switch = 1
About to clear signals
Initialization Complete 
 
  System Download Complete  
  Setting Counter Val to: 100
  The Readout is now ENABLED 
  Link 0 is enabled 
  Link 1 is disabled 
  Link 2 is disabled 
  Link 3 is disabled 
Executing Control block 0, 50 times 
 CIW is: 50 
 link number 0
 Num data words 272
 Data retrieved Format = 2
 HOST ciw  = 6
 00ea0e1b  f8000000  00000000