Signum Systems (est. 1979) manufactures In-Circuit Emulators, Debuggers and Flash Programmers for many popular CPU, MCU and DSP devices. Current support includes all ARM7, ARM9, ARM11 and Cortex cores, TI OMAP and DaVinci devices, TI C6000, C5000 and C2000 DSPs as well as the older 8051, 80196 and 80186 devices.
8051 In- Circuit Emulator
USP-51 is an In-Circuit Emulator for the 8051 family of MCUs that comes with Chameleon Debugger, 128K of emulation memory, 32K of real-time trace memory and complex hardware breakpoints.