Using MPLAB 7.30, MPASM 5.01 and pspls44001.hex in the PICStartPlus PUM. Program assembles OK ConfigBase equ 0x300000 CONFIG OSC = EC CONFIG BOR = OFF, PWRT = ON CONFIG WDT = OFF CONFIG STVR = ON, LVP = OFF, DEBUG = OFF CONFIG CP0 = OFF, CP1 = OFF CONFIG CPB = OFF CONFIG WRT0 = OFF, WRT1 = OFF CONFIG WRTC = OFF, WRTB = OFF, WRTD = OFF CONFIG EBTR0 = OFF, EBTR1 = OFF CONFIG EBTRB = OFF With one of the two 18F1320s I have, I get a single error when trying to program the chip Configuration Setting Expected Received Oscillator EC-CLKOUT on RA6 EXT RC-CLKOUT on RA6 With the other chip virtually everything fails (memory returns FFFF etc) Is this a pair of duff chips or a settings thing ? TIA -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist