$Id: Jumpers-ASCII.txt,v 1.4 2023/05/23 00:15:53 gaijin Exp $

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   ASCII-art.  If the pictures of connectors and jumpers just look
               like a jumble of vertical lines all squashed 
   together, try selecting your display font to be "Courier 10" 
   (or some other, monospaced or non-proportionally spaced font).


JUMPERS
-------

  *** IMPORTANT ***

  Note that the jumpers on CON1 (the "six-pack" jumper block just behind
  and slightly to one side of the A-type USB connector) are -not- placed
  side-to-side across the jumpers in the normal fashion, but up and down
  between the centre pins and either bottom or top pins, like this:-

                                           o     -------------
                                    CON2   |     |   AUDIO    |
                                           o     -------------


                 o  o                   o  o
                 |  |
         EITHER  o  o     CON1      OR  o  o     -------------/
         ======                     ==  |  |     |        ====|
                 o  o                   o  o     |    USB     |
                                                 |  A-TYPE    |
                                                 |        ====|
                                                 -------------\


   The middle two pins connect to the USB data lines on the CPU.
   The top and bottom pins connect to the USB A-type (L/H example)
   and the micro-USB port (R/H example), respectively.

   The jumpers should therefore be in the bottom position when trying
   to flash the device via the micro-USB port, or in the top position
   when connecting an external device (ie:- a portable, USB HDD) to the
   full-size, A-type port.

   You can only ever use one port at a time.


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   JUMPER SETTINGS FOR FLASHING/PROGRAMMING THE BOARD
   ==================================================

   CON2, the single jumper behind the audio  jack, needs to be removed
   to enable flashing.

   The CON1 jumpers need to be set to be on the bottom two pins (with
   the audio jack towards the top of the board) to enable the USB-micro
   port.



                                      o     -------------
                               CON2         |   AUDIO    |
                                      o     -------------


                                   o  o

                            CON1   o  o     -------------/
                                   |  |     |        ====|
                                   o  o     |    USB     |
                                            |  A-TYPE    |
                                            |        ====|
                                            -------------\


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   JUMPER SETTINGS FOR NORMAL OPERATION OF THE BOARD
   =================================================

   For normal operation, the CON2 jumper should be in place.


   NOTE  --  Using the current (as of May 2023), Orange-Pi
             supplied Debian and Ubuntu images, there appears
   to be an inconsistency between the versions of mkfs/fsck and other
   filesystem related utilities such as mount, which causes actual
   filesystem operations to fail with "superblock" errors.  In other
   words, although external drives are recognized and partitions can be
   created, they can -not- be used (swap partitions can also be created
   and do, in my limited experimentation so far, appear to work).

   ...Other filesystems (ie:- vfat) -will- work on external drives.



   USB-Micro Port Enabled
   ----------------------


   If the CON1 connectors are on the bottom pins, the USB-micro
   port is enabled.



                                      o     -------------
                               CON2   |     |   AUDIO    |
                                      o     -------------


                                   o  o

                            CON1   o  o     -------------/
                                   |  |     |        ====|
                                   o  o     |    USB     |
                                            |  A-TYPE    |
                                            |        ====|
                                            -------------\


   USB-A (Full-Size) Port Enabled
   ------------------------------

   If the CON1 connectors are on the top pins, the larger, USB
   A-type port is enabled.



                                      o     -------------
                               CON2   |     |   AUDIO    |
                                      o     -------------


                                   o  o
                                   |  |
                            CON1   o  o     -------------/
                                            |        ====|
                                   o  o     |    USB     |
                                            |  A-TYPE    |
                                            |        ====|
                                            -------------\


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