PIC 16f628A refusing to work

[Jerson]

Try this

@ device  pic16f628a, hs_osc, wdt_off, mclr_off, protect_off ,pwrt_on, bod_on, lvp_off, cpd_off

This is needed since MCLR is used as an input. You may also change HS_OSC to XT_OSC since HS is used for resonators and XT for a crystal.

[Davidmarks]

Hi, Thanks for quick reply ! I have tried the changes you suggest but still no signs of life. I should perhaps have mentioned that I am using a Pickit 2 to proram the 16f628a and have it directly connected to pins 12,13,14 and 4. Having prorammed it ( and there is a hex file in there if I read it) I remove the Pic Kit and connect and external supply as the coil would draw more current than the pic Kit would be happy with. Can't help thinking I am doing something seriously dumb here (not for the first time !