Replacing 16F84 with PICAXE-18 on PCB

[Johnmb]

I have proto PCBs that use the 16F84 and I want to substitute the PIXAXE -18(A). The 16F84 uses a resonator on pins 15 and 16. If the PCB traces at 15/16 are cut, will the pins have to be terminated or can they be left floating? Must The Vdd level be kept less than 5VDC? What else is there that could derail my use of the PICaxe?

Thank you
John

 

[SD2100]

You will have to include the dowload resistors on pins 2 & 3 for the 18A which are RA3 & RA4 on the 16F84. May be post a diagram of the board, will make it a lot easier.