December 8, 1998

Overview

Version 1.7.2 of the V6M6 software and FPGA configurations includes the following changes:

• Hardware and software modifications for DM12C549, DM4C51 and DM2C31 DSP modules.

• Added transmit and receive testing in the IMATM diagnostic program.

• Added "safety" features to the pciinit program.

• Modification to the pciflashup program.

• Bug fixes in various diagnostic programs.

• Additions and changes for vxWorks support.

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

Hardware and Software Changes for DSP Modules

New FPGA configurations for the DM4C51 and DM2C31 modules (flash files, dm4c5129.mcs and dm2c3130.mcs) fix potential problems with DSP-to-PCI interrupts. In the previous versions, an interrupt could be lost if the status register is read from the PCI bus at the same a DSP is setting it.

A new FPGA configuration for the DM12C549 module (flash file, dm12c5497.mcs) decreases the private, inter-processor serial bus clock to keep it within proper tolerance. The new clock rate is the DSP's processor clock divided by 4.

The DM12C549 and DM4C51 module initialization routines in the V6M6 host application library were modified to clear the DSP-to-PCI interrupt mask registers. The affected functions are dm4c51_init and dm12c549_init.

Transmit & Receive Tests added to IMATM Diagnostic

Implementation of the IMATM diagnostic program, pcinicstar, has been completed with the addition of data transmit and receive tests. The program will operate the module using internal loop back in the PHY chip or with a fiber-optic cable for external loop-back. Options are provided to test the module with bit rates of 55 MHz or 155 MHz. Run the program with no command line arguments for a list of options.

The pciburn diagnostic is modified to incorporate the new test modes and alternates between 55 MHz and 155 MHz bit rates on each pass.

Safety Features Added to Pciinit

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.

Modification to Pciflashup

The pciflashup is modified to provide enhanced recovery from possible flash data corruption.

The -f option forces pciflashup to be rewrite all FPGA configuration data into the flash. In previous versions, the flash's existing directory content was used to locate configuration data in the flash. Now, when run with the -f option, any existing information in the flash directory is ignored. This forces the directory contents to be rebuilt in the flash as well as forcing the configuration data to be rewritten.

Diagnostic Program Bug Fixes

The pcitdm program is modified to limit the number of DM12C549 processors included in portions of the test that would require more than the number of TDM time slots that the DM12C549 software can handle.

Clearing of status variables in the 4600tdm MIPS program, used with the pcitdm program, is done earlier in the program to solve problems starting TDM data transfers.

Code in the pcimemory program was fixed for detecting when DM2C31 modules have completed their portion of the test.

Cosmetic fixes in pcipiomem for the usage message.

Additions and Changes for vxWorks Support

Recent additions to the pcimemslice diagnostic program for support of DM12C549 modules are modified to work properly under vxWorks.

The pcinicstar diagnostic program is included in the Makefile.pci file used to build the vxWorks diagnostic library.