I am trying to use a package with C166 compiler to provide code for a C165 chip. I am using the maximum number of address lines to drive various peripheral devices (CAN chip, ADC chips, DAC chips, EEPROM, clock, etc). I am experiencing problems which may or may not be to do with how I have set up the 'Options for target' window on Keil Micro-Vision (or #pragma commands), and wondered if anyone else out there had done anything similar successfully, and could therefore let me have a list of their settings to check against. Yours grateful for any light anyone can shed on this, Richard Roebuck.