** Hitachi 9500 and 9550 players. This version UNTESTED! I couldn't find   **
** anyone willing to test it!                                              **
** Communication protocol:                                                 **
** Computer activates RTS (pin 4) on rs-232 port, (amiga 7-line handshake) **
** then sends "remote" command (68H) to switch player from local to remote **
** mode. Then send "play" command (25H) and expect back "job end" (A5H).   **
** The player may take up to 15 seconds to spin up! Commands that are sent **
** may return either a "job end" code which is the original command + 80H, **
** or echo back the original command (like status ). The Hitachi players   **
** don't support STATUS messages to find out if it is READY for a command. **
** ASCII digits used for frame search numbers, etc. BUT, frame numbers are **
** returned as two byte binary, high byte first, then low byte. Usual baud **
** rate is 9600.                                                           **

COMMANDS       CHAR     HEX    DECIMAL  JOB-END(hex)    COMMENT
----------------------------------------------------------------------------
play-fwd        %       25      37      A5              Play forward
play-rev        B       42      66      C2              Play reverse
pause           *       2A      42      AA
slow-fwd        #       23      35      A3              Slow forward
slow-rev        (       28      40      A8              Slow reverse
still-fwd       $       24      36      A4              Still forward
still-rev       )       29      41      A9              Still reverse
fast-fwd        !       21      33      A1              Fast forward
fast-rev        &       26      38      A6              Fast reverse
scan-fwd        "       22      34      A2              Scan forward
scan-rev        '       27      39      A7              Scan reverse
search          +       2B      43      B0
enter           A       41      65      41 (echo back)  Terminate groups of cmds
P. frame        k       6B      107     6B (echo back)  Get current frame #
reject          /       2F      47      AF              Park disc
(and a few others......)

SERIAL PORT CONNECTION:
 computer   player
 --------   ------
  TxD 2      2 command
  RxD 3      3 data
  RTS 4      4 host ready
  CTS 5      5 player ready
  GND 7      7 GND
-----------------------------