INES Mapper 203: Difference between revisions
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(not a full 8 bit register, that'd be a bit odd) |
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| Line 35: | Line 35: | ||
| $8000 | $8000 | | | $8000 | $8000 | | ||
+---------------+---------------+ | +---------------+---------------+ | ||
The only known instantiation of this mapper has 64 KiB PRG and 32 KiB CHR, i.e. only four bits of the register exist, and the "35" games are the various parts of Duck Hunt, [http://bootgod.dyndns.org:7777/profile.php?id=3726 Hogan's Alley], [http://bootgod.dyndns.org:7777/profile.php?id=306 Wild Gunman], and [http://bootgod.dyndns.org:7777/profile.php?id=3799<strike>Battle City</strike>“Tank 1990”]. | |||
Latest revision as of 08:31, 10 May 2014
Here are Disch's original notes:
========================
= Mapper 203 =
========================
Example Games:
--------------------------
35-in-1
Registers:
---------------------------
$8000-FFFF: [PPPP PPCC]
P = PRG Reg
C = CHR Reg
CHR Setup:
---------------------------
$0000 $0400 $0800 $0C00 $1000 $1400 $1800 $1C00
+---------------------------------------------------------------+
| $8000 |
+---------------------------------------------------------------+
PRG Setup:
---------------------------
$8000 $A000 $C000 $E000
+---------------+---------------+
| $8000 | $8000 |
+---------------+---------------+
The only known instantiation of this mapper has 64 KiB PRG and 32 KiB CHR, i.e. only four bits of the register exist, and the "35" games are the various parts of Duck Hunt, Hogan's Alley, Wild Gunman, and Battle City“Tank 1990”.
