cartreader/extras/snesCIC/README.md

This is the hex file that needs to be flashed to the PIC12F629 if you want to dump SA1 SNES games.
Source: https://github.com/mrehkopf/sd2snes/tree/master/cic

You can build a simple PIC flasher for the COM port using the schematic provided here but you need to adapt the pinout to the PIC12F629.

In WxPic choose "COM84 programmer for serial port" as interface type.
You might also need to copy the PIC12F629.dev file from MPLAB into the devices folder.