charrom.bin is the alternative VC20 system font by Retrofan (PXLfont88665T-RF1.1-VIC20sys.bin) which has been published here: 
https://www.forum64.de/index.php?thread/87051-neuer-vc20-systemfont-work-in-progress-abgeschlossen/&postID=1739746#post1739746
