better compilers for 8051 devices

I'm just not all that impressed with the Keil C51 compiler for 8051 chips.

Flaky debugger integration, poor optimization of local variables, clunky IDE, and difficult makefile integration lead my list of gripes.

The compiler from IAR sounds very interesting. It even supports C++.
Embedded Development Tools from IAR Systems


A pretty complete list of compatible C compilers is on the SiLabs support page

C8051F019 Key documents

SiLabs technical library webpage is a confusing little database based webpage - the poster child of how to make a crappy website.

This link however has all the appnotes you need listed on one page!

MCU Knowledge Base

program the flash in SiLabs C80501F019

This will be usefull for creating a utility for programming PID/Serial# which will also load the flash.

Mixed-Signal ICs - Flash Programming