CodeMaster-52 is a complete development tool solution for 8051 microcontrollers produced by Atmel, NXP, Dallas Semiconductor, SST, Winbond, Micronas, and other device manufacturers. 
CodeMaster-52 is a configurable set of software and hardware tools for developing 8051 applications under control of one easy-to-use integrated development environment (see the diagram above). A full configuration includes a C compiler of your choice, macro assembler, software simulator and either an in-circuit emulator or on-chip (JTAG) debugger. The matrix below displays all CodeMaster-52 kits available for ordering.
Tools included in the CM-52/xx kit: