Qsys USB BLASTER Jtag-avalon-MM

Introduction

It's possible to access avalon-MM bus with an USB-Blaster connected to jtag. To do that a special ip-core must be instanciated in Qsys and a system console must be launched in Quartus.

Access avalon-MM registers

• Launch Systemp console in Quartus :

tools -> System debugging tools -> system console

• Connect to USB-BLaster JTAG-avalon-MM instance :

% set masters [get_service_paths master]
% set master [lindex $masters 0]
% open_service master $master

• Write 32bits value

% master_write_32 $master 0x4 0xdeadbeef

• Read 32bits value

% master_read_32 $master 0x0 2