Since Zeal used a 16-bit mode BIOS INT to get an 8x8 VGA ROM font, this is incompatible if Zeal is loaded to a patched 32-bit mode by the zealbooter prekernel. To circumvent SYS_FONT_PTR never being set and fix access to the 'thick' font with Ctrl-Alt-F, I loaded Zeal bare-metal on my Thinkpad T420 and saved the VGA ROM font file with FontEd, then transferred the file to my VM.
