A disassembler for the PIC12F629 (and all other PIC chips) can be found
Create a folder name it Disassembler:
Download Disassembler.zip file
and place it in Disassembler folder.
Unzip the file.
Click on Mikado3.3.3e.exe and "send to desktop" (create a shortcut).
Rename the desktop icon "Disassembler"
Place the .hex file you wish to disassemble in the Disassembler folder.
Click on the "Disassembler" icon on your desktop.
The disassembler program will load
Select and click on: HEX File to ASM file for MPASM
Click on OPEN for the location of your .hex file and insert the address.
Click on OPEN for the Include File and load P12F629.INC
The result of the disassembly will be placed in the Disassembler folder.
Use NotePad or Word to open the file.