2003 Mapper pinout

2003: 48-pin 0.6mm pitch TQFP

               Gnd -- /01 o 25\ <> D7                 
            GPO 3 <? /02     26\ <> D6               
           GPO 2 <? /03       27\ <> D5                
          GPO 1 <? /04         28\ <> D4             
         GPO 0 <? /05           29\ <> D3              
          Gnd -- /06             30\ -- Vcc            
     RTC SIO <> /07          /|   31\ <> D2            
    RTC SCK <- /08          / |/   32\ <> D1         
    RTC CS <- /09             /     33\ <> D0          
  ROM A25 <- /10          /\      \  34\ <- A0       
 ROM A24 <- /11           \/      L\  35\ <- A1        
ROM A23 <- /12          /\      \  L\  36\ <- A2     
ROM A22 <- \13       /  \/     \/\     37/ <- A3     
 ROM A17 <- \14      \/       \ \/    38/ <- CPU A19 
  ROM A16 <- \15      \/     \_\     39/ <- CPU A18    
       Gnd -- \16          |\ \     40/ <- CPU A17   
    ROM A20 <- \17         |_\     41/ <- CPU A16      
     ROM A21 <- \18      \        42/ <- /Reset        
      ROM A19 <- \19    \/\      43/ -> /MBC         
       ROM A18 <- \20  \ \/     44/ <- M/IO            
       SRAM /CS <- \21  \      45/ <- /RD              
         ROM /CS <- \22       46/ <- /WR             
        ROM /BYTE <- \23     47/ <- /SEL             
         D15 (A-1) <Z \24 O 48/ <- CLK               

Note the orientation of the text: "Bandai 2003" when viewed upright specifies pin 1 is bottom face, leftmost.