I went to Code Architect and generated the clock module for a CPU frequency of 7.3728MHz. I then went and generated the timer module, timer 0 periodic overflow with an overflow every 10ms.

In the main function I called both the osc and timer init functions and set EA = 1. I modified the timer 0 ISR to toggle pin P2.0 every 10th time the ISR is called.

Built. Ran. LED on the toggled pin flashes.

Test setup:

Online Code Architect
Keil C51 V7.01
Keil MCB900 board rev 2
89LPC932 rev G
Flash Magic 1.84
Windows XP ;)

Andy
ESAcademy - www.esacademy.com