Key: Included	PK51 Professional Developer's Kit
UVision
IDE
Debugger
Simulator
Compilation Tools
AX51 Assembler
CX51 C Compiler
LX51 Linker
OHX51 Object HEX Converter
A51 Assembler
BL51 Code-Banking Linker
OH51 Object HEX Converter
OC51 Banked Object Converter
C51 Compiler
ISD51 In-System Debugger
FlashMON51 Target Monitor
MON51 Target Monitor
MON390 Target Monitor
MONADI Target Monitor
RTX51 Tiny RTOS
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Note:

AX51 supports the 8051, Dallas 390, and NXP 51MX instruction sets.
CX51 supports the NXP 51MX instruction set.
LX51 is required for Far Memory, Dallas Contiguous Mode, and NXP 51MX.
OHX51 is required for programs linked with LX51.

Recommended Hardware

1.5+ GHz 64-bit processor
2 GB of system memory (RAM)
1 GB of available disk space
2 Mpbs or higher Internet connection for software activation, product updates and online services like the PackInstaller

Supported Operating Systems

Only 64-bit variants of Microsoft Windows are supported. See the following table for supported operating systems.

Windows 11	Windows 10	Windows 8.1
Windows 11 Home Windows 11 Pro Windows 11 Enterprise Windows 11 Education	Windows 10 Home Windows 10 Pro Windows 10 Enterprise Windows 10 Education	Windows 8.1 Windows 8.1 Pro Windows 8.1 Enterprise

Software will be tested against the latest revision supplied by Microsoft. Beta Releases or Release Candidate versions of Windows are not recommended for productive use and are generally not supported.