INES Mapper 094

INES Mapper 094 is used to represent a simple Capcom board, its specific type name is unknown. Senjou no Ookami (Japanese version of Commando) is the only game known to utilize this mapper. It appears very similar to UxROM, but the register is shifted by two bits.

Overview

• PRG ROM size: 128 KB
• PRG ROM bank size: 16 KB
• PRG RAM: None
• CHR capacity: 8 KB RAM
• CHR bank size: Not bankswitched
• Nametable mirroring: Solder pads select vertical or horizontal mirroring
• Subject to bus conflicts: ?

Banks

• CPU $8000-$BFFF: 16 KB switchable PRG ROM bank
• CPU $C000-$FFFF: 16 KB PRG ROM bank, fixed to the last bank

Registers

Bank select ($8000-$FFFF)

7  bit  0
---- ----
xxxP PPxx
   | ||
   +-++--- Select 16 KB PRG ROM bank for CPU $8000-$BFFF

 Here are Disch's original notes:
 ========================
 =  Mapper 094          =
 ========================
 
 Example Games:
 --------------------------
 Senjou no Ookami
 
 
 Registers:
 --------------------------
 I don't know if this mapper suffers from bus conflicts or not.  Use caution!
 
 
   $8000-FFFF:  [...P PP..]   PRG Reg  (16k @ $8000)
 
 
 PRG Setup:
 --------------------------
 
       $8000   $A000   $C000   $E000  
     +---------------+---------------+
     |     $8000     |     { -1}     |
     +---------------+---------------+