The following components which are present in the PK51 Full Version are not included in the Evaluation Version: Linker for Code Banking and RTX51 Tiny Real-time Operating System.No support for in-line assembly using #pragma ASM.No support for floating-point arithmetic and no support for user libraries is provided.No hardware support for multiple DPTR registers is provided.Programs generated with the evaluation software may not be programmed into single-chip devices with less than 2 Kbytes of on-chip ROM. Code generated cannot be used in single-chip devices that support 2 Kbytes or less of program space. The startup code generated includes LJMPs.

It introduces the Vision IDE and debugger and presents a step-by-step guided tour of the many features and capabilities of the Keil MDK embedded development tools. The 8051 compiler, assembler, linker, and debugger are limited to 2 Kbytes of object code. The Getting Started with MDK guide is an introduction to the Keil MDK development tools for Arm Cortex -M microcontrollers.