This disassembly would have taken a lot longer to finish if it weren't for the research and documentation already done and made available by: This game shares a lot of functionality with Jetpac, hence his disassembly was invaluable!

This work would not be possible without the efforts of;

ICEMARK - Christopher Jon Wild
https://www.icemark.com/dataformats/sabrewulf/index.html
Level 7
http://www.level7.org.uk/miscellany/sabrewulf-disassembly.txt

Without these to guide my early versions, I'm sure I wouldn't have gotten very far!