NXP (founded by Philips) P83/87C660X2

• CA51 Compiler Kit
  Keil
• PK51 Professional Developer's Kit
  Keil

• REG66X.H
  4,526 bytes

• Ultra-51
  Ashling
• iC1000 PowerEmulator
  iSystem
• MetaICE-XF 8051 In-Circuit Emulator
  Metalink Corporation

• Dataman 40Pro Universal ISP Programmer
  Dataman Programmers Ltd.
• Dataman 448Pro2 Super Fast Gang ISP Production Programmer
  Dataman Programmers Ltd.
• Dataman 48Pro2 Super Fast Universal ISP Programmer
  Dataman Programmers Ltd.
• Dataman 48UXP Universal Programmer
  Dataman Programmers Ltd.
• Dataman 848Pro2 Super Fast Stand-Alone Programmer
  Dataman Programmers Ltd.
• Dataman T51Pro MCS51 / AVR ISP Programmer
  Dataman Programmers Ltd.

• RTX51 Tiny
  Keil

The following on-chip peripherals are simulated by the Keil Software µVision Debugger.

• 6 or 12 Clocks Per Machine Cycle (X2)
• I²C Interface
• Interrupts 8S/4L (Including External)
• PCA Timer with modules
• Port 0
• Port 1
• Port 2
• Port 3
• Power Saving Modes (Idle and Power Down)
• Serial UART (Enhanced Interface)
• Timer 0
• Timer 1
• Timer 2 (Extended Timer 2)
• Watchdog Timer

The following on-chip peripherals are not simulated.

• Flash with ISP and IAP

The following AGSI Drivers are available for the Keil Software µVision Simulator.

• Proteus VSM
  Labcenter Electronics
• 8051 State Machine
  MEBA
• I²C Simulation
  MEBA
• LCD Simulation (HD44780 Controller)
  MEBA
• LED simulation
  MEBA
• Signal Generator
  MEBA

The following AGDI Drivers are available for the Keil Software µVision Debugger.

• Keil ISD51 Driver
  Keil
• Keil MON51/FlashMON Driver
  Keil