November 6, 1998

Overview

Version 1.7.1 of the V6M6 software and FPGA configurations includes the following changes:

• Hardware and software modifications for DM12C549 DSP modules.

• New run-time option for the pciburn diagnostic

• Modification to the pciflashup program.

• Bug fixed in the VME/PCI interface logic.

• New FPGA configuration for PM4700A MIPS modules.

Note: This release includes new flash files for FPGA configurations. Be sure to run pciflashup after installing the software.

Hardware and Software Changes for DM12C549 DSP Modules

A new FPGA configuration (in flash file, dm12c5496.mcs) fixes problems with DSP to PCI interrupts, conflicts between configuration register writes and busy memory bus, and accessing DSP HPI registers.

The V6M6 host application library for the DM12C549 is fixed to solve a bug in setting the PCI INT B mask. The data transfer functions were modified so that when transferring to non-HPI memory, they use the memory write / IRQ operation when issuing the transfer command to the DSP. This is more efficient than separately writing the command and setting the interrupt.

The pcichip is modified to include testing of PCI INT B from DM12C549 modules.

New Run-Time Option for Pciburn

A new option is added to the pciburn diagnostic program that specifies a finite number of test passes to perform. The option is -P followed by an integer number of desired passes. For example:

      pciburn  -P 3

will run the suite of tests 3 times on all the V6M6 boards found in the system.

When the -P option is omitted, pciburn defaults to continuous mode, performing test suite iterations until interrupted.

Modification to Pciflashup

The pciflashup program used to update the FPGA configuration flash is modified to trap user interrupts (control-C). The purpose of this is to warn the user that interrupting the process of modifying the flash could compromise the integrity of the flash data. The user is given the opportunity to continue the procedure or interrupt the program.

Bug fixed in VME/PCI Interface Logic

New FPGA configurations for the VME/PCI interface logic fix a bug which caused glitches on the VME DTACK/ signal when the V6M6 board is reset and when it reconfigures the FPGA. The glitches could cause data errors and confuse the VME interface of the system controller if a V6M6 board is reconfigured during a VME bus transaction.

The new flash files are vmepcia43.mcs for version 1 V6M6 boards, vmepcib112.mcs for version 2 V6M6 boards, and vmepcic112.mcs for version 3 V6M6 boards.

New FPGA Configuration for PM4700A Modules

New FPGA configuration for the PM4700A (file pm4700a12.mcs) improves signal characteristics for increased reliability when the MIPS processor clock frequency is 200MHz or greater.