Aeroflex Gaisler provides two debug monitors for the LEON2, LEON3 and LEON4 processors. Using the debug monitors it is possible to develop and debug target applications on the real hardware.

GRMON is a debug monitor for the LEON Debug Support Unit (DSU), providing a non-intrusive debug environment on real target hardware. The LEON DSU can be controlled through any AMBA AHB master in a system-on-chip design and GRMON therefore supports communication through a large number of interfaces.

GRMON has undergone a major overhaul and the new version named GRMON2 will be  distributed to customers in the future. It will also be possible to upgrade an existing GRMON  license to the new GRMON2.

GRMON will continue to be maintained with respect to LEON2/LEON2FT usage and resolution of potential bugs, while features and new cores in the GRLIB IP core library will be integrated in GRMON2 only.

GRMON

GRMON2