Re: Looking for Apple II J-plus Japanese software

[sicklittlemonkey <Nick.Westgate@gmail.com>]

Apple II J-Plus Video ROM Notes
Written by Nick Westgate, with thanks to Philip Lord

Characters in ROM:
00-3F Katakana } 00-7F activated by access to $C05C (annunciator 2
off)
40-7F ASCII    }
80-BF ASCII    ] 80-FF activated by access to $C05D (annunciator 2 on,
set after reset)
C0-FF ASCII    ]

Characters displayed onscreen with annunciator 2 off:
00-3F Katakana - normal
40-7F Katakana - flashing
80-BF ASCII    - normal
C0-FF ASCII    - normal

Characters displayed onscreen with annunciator 2 on:
00-3F ASCII    - inverse
40-7F ASCII    - flashing
80-BF ASCII    - normal
C0-FF ASCII    - normal

Japanese katakana at 00:
   0  1   2   3  4  5  6  7  8  9  A  B  C   D  E  F
00 TA CHI TSU TE TO NA NI NU NE NO HA HI FU  HE HO MA  (full size
kana ...)
10 MI MU  ME  MO YA YU YO RA RI RU RE RO WA  N  "  '   (... Japanese
punctuation ...)
20    .   [   ]  ,  +  WO a  i  RO WA '  ya  yu yo tsu (... WO, small
kana, repeated RO WA ', small kana)
30 -  A   I   U  E  O  KA KI KU KE KO SA SHI SU SE SO  (-, full size
kana)

ASCII characters duplicated at 40, 80, C0:
   0  1   2   3  4  5  6  7  8  9  A  B  C   D  E  F
00 @  A   B   C  D  E  F  G  H  I  J  K  L   M  N  O
10 P  Q   R   S  T  U  V  W  X  Y  Z  [  \   ]  ^  _
20    !   "   #  $  %  &  '  (  )  *  +  ,   -  .  /
30 0  1   2   3  4  5  6  7  8  9  :  ;  <   =  >  ?

Notes:
- Full size katakana are represented above in CAPITAL CASE
- Small katakana are represented above in lower case
- RO WA ' appear twice because [ \ _ are not able to be typed from the
keyboard
- RO WA ' can be typed in katakana mode via ) * +

Japanese Punctuation Key:
" dakuten/tenten (voiced mark)
' handakuten (plosive mark)
  (space)
. maru/kuten (full stop)
[ kakko/kagikakko (left half bracket)
] kakkotoji/kagikakkotoji (right half bracket)
, ten/touten (comma)
+ nakaguro/potsu/nakaten (middle dot)
- bousen/chouon (dash)