[May/02/93]

Atari Food Fight

All parts type 2764

file        loc   cksm
----------  ----  ----
136020.301  8c    5f0b  
136020.302  9c    b07e  
136020.303  8d    2274  
136020.204  9d    15b5  
136020.305  8e    9634  
136020.306  9e    a2a9  
136020.307  8f    add8  
136020.208  9f    db24  
136020.109  6l/m  8f16  
136020.110  4e    c666  
136020.111  4d    24fa

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[MAME]

    Food Fight Memory map

    ========================================================================
    MAIN CPU
    ========================================================================
    000000-00FFFF   R     xxxxxxxx xxxxxxxx   Program ROM
    014000-01BFFF   R/W   xxxxxxxx xxxxxxxx   Program RAM
    01C000-01CFFF   R/W   xxxxxxxx xxxxxxxx   Motion object RAM (1024 entries x 2 words)
                    R/W   x------- --------      (0: Horizontal flip)
                    R/W   -x------ --------      (0: Vertical flip)
                    R/W   ---xxxxx --------      (0: Palette select)
                    R/W   -------- xxxxxxxx      (0: Tile index)
                    R/W   xxxxxxxx --------      (1: X position)
                    R/W   -------- xxxxxxxx      (1: Y position)
    800000-8007FF   R/W   xxxxxxxx xxxxxxxx   Playfield RAM (32x32 tiles)
                    R/W   x------- --------      (Tile index MSB)
                    R/W   --xxxxxx --------      (Palette select)
                    R/W   -------- xxxxxxxx      (Tile index LSBs)
    900000-9001FF   R/W   -------- ----xxxx   NVRAM
    940000-940007   R     -------- xxxxxxxx   Analog input read
    944000-944007     W   -------- --------   Analog input select
    948000          R     -------- xxxxxxxx   Digital inputs
                    R     -------- x-------      (Self test)
                    R     -------- -x------      (Player 2 throw)
                    R     -------- --x-----      (Player 1 throw)
                    R     -------- ---x----      (Aux coin)
                    R     -------- ----x---      (2 player start)
                    R     -------- -----x--      (1 player start)
                    R     -------- ------x-      (Right coin)
                    R     -------- -------x      (Left coin)
    948000            W   -------- xxxxxxxx   Digital outputs
                      W   -------- x-------      (Right coin counter)
                      W   -------- -x------      (Left coin counter)
                      W   -------- --x-----      (LED 2)
                      W   -------- ---x----      (LED 1)
                      W   -------- ----x---      (INT2 reset)
                      W   -------- -----x--      (INT1 reset)
                      W   -------- ------x-      (Update)
                      W   -------- -------x      (Playfield flip)
    94C000            W   -------- --------   Unknown
    950000-9501FF     W   -------- xxxxxxxx   Palette RAM (256 entries)
                      W   -------- xx------      (Blue)
                      W   -------- --xxx---      (Green)
                      W   -------- -----xxx      (Red)
    954000            W   -------- --------   NVRAM recall
    958000            W   -------- --------   Watchdog
    A40000-A4001F   R/W   -------- xxxxxxxx   POKEY 2
    A80000-A8001F   R/W   -------- xxxxxxxx   POKEY 1
    AC0000-AC001F   R/W   -------- xxxxxxxx   POKEY 3
    ========================================================================
    Interrupts:
        IRQ1 = 32V
        IRQ2 = VBLANK
    ========================================================================
  
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