You can also use Quartus's SignalTap soft logic analyzer feature to debug your design. Each TM-4 machine has a Quartus jtagd server daemon running on it, which Quartus can use to talk to the FPGAs on the board. The password for each server is "54321".
crunch | nyx | wildcat | cougar | |
Version | TM-4 | TM-4B | TM-4B | TM-4B |
FPGAs | 3 (fpga2 won't program) | 4 | 4 | 4 |
PCI (ports package) reliability - reading from circuit | poor | poor | good | good |
PCI (ports package) reliability - writing to circuit | good | good | good | good |
PCI (ports package) speed - reading from circuit (Mbytes/sec) | 5 | 8.9 | 2.8 | 5 |
PCI (ports package) speed - writing to circuit (Mbytes/sec) | 4.8 | 17.4 | 17.4 | 16.7 |
DDR DIMMs | 1A (fpga1, dimm A) and 3A good, all others flaky | all 8 good | 0A bad, all others good | 0A, 1A and 3B bad, others good |
VGA Quality | good | good | good | flaky |
Communication between FPGAs | bad | poor | good | poor |
Other | Some FPGAs see more edges on tm4_glbclk* than the others do | Won't boot - April 2009 | Won't boot - April 2009 |