========================
=  Mapper 080          =
========================


Example Games:
--------------------------
Kyonshiizu 2
Minelvaton Saga
Taito Grand Prix - Eikou heno License


Notes:
---------------------------
Regs appear at $7EFx, I'm unsure whether or not PRG-RAM can exist at $6000-7EFF

Fudou Myouou Den is often marked to use this mapper -- however it uses mapper 207.


Registers:
---------------------------

$7EF0-7EF5:  CHR Regs

$7EF6,7EF7:  [.... ...M]  Mirroring
0 = Horz
1 = Vert

$7EF8,7EF9:  Internal RAM permission ($A3 enables reads/writes; any other value disables)

$7EFA,7EFB:  PRG Reg 0 (8k @ $8000)
$7EFC,7EFD:  PRG Reg 1 (8k @ $A000)
$7EFE,7EFF:  PRG Reg 2 (8k @ $C000)

$7F00-7FFF:  128 Bytes of RAM, mirrored once.


CHR Setup:
---------------------------

$0000   $0400   $0800   $0C00   $1000   $1400   $1800   $1C00 
+---------------+---------------+-------+-------+-------+-------+
|    <$7EF0>    |    <$7EF1>    | $7EF2 | $7EF3 | $7EF4 | $7EF5 |
+---------------+---------------+-------+-------+-------+-------+

PRG Setup:
---------------------------

$8000   $A000   $C000   $E000  
+-------+-------+-------+-------+
| $7EFA | $7EFC | $7EFE | { -1} |
+-------+-------+-------+-------+