K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2021-10-17T18:46:31.673339Z
K 7
svn:log
V 279
boot2: need to expand tab output and mask getchar

The BIOS ouput char function does not expand tab.
Mask getchar with 0xFF.

(cherry picked from commit 6469d2b422960de4b1253cc63b11fa67f896604f)

Git Hash:   b38c8d4c6d691a3a65f90a7023c99bf64790caa4
Git Author: tsoome@FreeBSD.org
END