AA3000+ Motherboard
===================

Battery
-------
NiCad:   Install R192, don't install D192
Lithium: Install D192, don't install R192


Scandoubler / flicker fixer
---------------------------
The scandoubler / flicker fixer is an optional feature.

If it won't be installed, the following components can be left out:
U460-U483, R410-R423, RP472-RP480, R460-R495, Q480-Q482, VR470, VC470,
C460-C489, C497-C499, J480


J480 PLL Circuit Adjustment

  1-2  PLL in closed loop
  2-3  PLL in open loop


Video switch
------------
The motherboard has inputs for two video sources that can be switched
either automatically by software or manually with a switch.
The selected video source is passed to the VGA connector CN480.


J490 (video input switch)

The video source is selected with a jumper.

   1-2  Automatic (CN490 or CN491, controlled by software)
   2-3  Force Amiga video (the video source connected to CN490)
   3-4  Force GFX video (the video source connected to CN491)


SW481 (scandoubler switch)

   Toggled up:   Scandoubler disabled, passes native 15kHz Amiga video to CN490
   Toggled down: Scandoubler enabled, passes scandoubled 31kHz Amiga video to CN490


CN490 pinout (first video input connector)

                       CN490
                      --------
        Ext R in2   1 | O  O | 2   Amiga R in
        Ext G in2   3 | O  O | 4   Amiga G in
        Ext B in2   5 | O  O | 6   Amiga B in
              GND   7 | O  O | 8   GND
    Ext VSYNC in2   9 | O  O | 10  Amiga VSYNC in
    Ext HSYNC in2  11 | O  O | 12  Amiga HSYNC in
                      --------

CN491 pinout (second video input connector)

                       CN491
                      --------
        Ext R in1   1 | O  O | 2   nc
        Ext G in1   3 | O  O | 4   nc
        Ext B in1   5 | O  O | 6   nc
              GND   7 | O  O | 8   GND
    Ext VSYNC in1   9 | O  O | 10  nc
    Ext HSYNC in1  11 | O  O | 12  nc
                      --------

If external video source is not connected to CN490,
shunt the CN490 with jumpers to use the Amiga video input
as the video source. As shown below.

                       CN490
                      --------
      Amiga R out   1 | O--O | 2   Amiga R in
      Amiga G out   3 | O--O | 4   Amiga G in
      Amiga B out   5 | O--O | 6   Amiga B in
              GND   7 | O  O | 8   GND
  Amiga VSYNC out   9 | O--O | 10  Amiga VSYNC in
  Amiga HSYNC out  11 | O--O | 12  Amiga HSYNC in
                      --------


Extended Kickstart ROM (Romy)
-----------------------------
Extended Kickstart ROM is an optional feature.

If it won't be installed, the following components can be left out:
U183, C183, J181, J182


Extended Fast RAM
-----------------
Extended Fast RAM is an optional feature.

If it won't be installed, the following components can be left out:
U893, C893


Internal SCSI
-------------
The motherboard has support for internal SCSI termination resistor packs.
To terminate the SCSI bus internally, install three 220/330 Ohm 8-pin SIP
resistor packs to locations RP810, RP811, RP812.

                   CN802
        ---        -----
  RP810 |X|   I  50|O O|
        |O|   N    |O O|
        |O|   T    |O O|
              E    |O O|
        ---   R    |O O|
  RP811 |X|   N    |O O|
        |O|   A    :::::
        |O|   L    |O O|
                   |O O|
        ---   S    |O O|
  RP812 |X|   C    |O O|
        |O|   S    |O O|1
        |O|   I    -----

 X = pin 1 of the resistor pack


DSP Processor
-------------
The DSP is an optional feature.

DSP fix: In order to make the DSP run, a jumper wire must be added between U122 pin 5 and U124 pin 27.
         More information here: https://github.com/Wrangler491/AA3000-DSP

If DSP isn't installed, the following components can be left out:
U700-U703, U122, RP700-RP702, R700-R702, C122, C700-C703, C734-C736, CN700, J122

CN700 pinout

             CN700
            --------
   +5V    1 | O  O | 2    DI
   -5V    3 | O  O | 4    ICK
   GND    5 | O  O | 6    ILD
   GND    7 | O  O | 8    DO
   GND    9 | O  O | 10   OCK
   GND   11 | O  O | 12   OLD
   GND   13 | O  O | 14   SY
  +12V   15 | O  O | 16   BIO5
  -12V   17 | O  O | 18   BIO3
   GND   19 | O  O | 20   BIO4
   GND   21 | O  O | 22   BIO3
   GND   23 | O  O | 24   BIO2
   GND   25 | O  O | 26   BIO1
   GND   27 | O  O | 28   BIO0
   GND   29 | O  O | 30   SCL
   GND   31 | O  O | 32   SDA
   GND   33 | O  O | 34   DSPRST
            --------
   

CD/AUX Audio Input Header (CN402)
---------------------------------
CN402 header pinout

   1  Audio in left
   2  Audio GND
   3  Audio in right
   4  +12V
   5  +5V
   6  SCL
   7  SDA
   8  GND


AA3000+ Firebird Daughterboard
==============================

The PCI requires the power supply cord to be plugged to CN500.

The PCI chips are programmed via JTAG with the Altera Quartus II software and USB Blaster device.

CN400 JTAG connector pinout

            CN400
           --------
   TCK   1 | O  O | 2   GND
   TDO   3 | O  O | 4   VCC
   TMS   5 | O  O | 6   nc
   nc    7 | O  O | 8   nc
   TDI   9 | O  O | 10  GND
           --------