Bitfields for DOS/V shift status:
Bit(s)	Description	)
 0	full-size rather than half-size
 2-1	character input mode
	00 alphanumeric, 01 Katakana, 10 Hiragana, 11 unused
 5-3	internal status
 6	Romaji enabled
 7	Katakana to Kanji conversion enabled
 15-8	internal status