NES 2.0 Mapper 434: Difference between revisions
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NewRisingSun (talk | contribs) (Correct masks) |
m (Corrected mirroring bit.) |
||
| Line 9: | Line 9: | ||
..M. .PPP | ..M. .PPP | ||
| +++- PRG A19..A17 | | +++- PRG A19..A17 | ||
+------- 0: | +------- 0: Horizontal mirroring | ||
1: | 1: Vertical mirroring | ||
==Inner Bank Register ($8000-$FFFF)== | ==Inner Bank Register ($8000-$FFFF)== | ||
Latest revision as of 21:16, 1 April 2022
NES 2.0 Mapper 434 denotes the S-009 PCB, used by multicarts consisting of several UNROM games.
Outer Bank Register ($6000-$7FFF)
Mask: $E000
D~7654 3210
---------
..M. .PPP
| +++- PRG A19..A17
+------- 0: Horizontal mirroring
1: Vertical mirroring
Inner Bank Register ($8000-$FFFF)
Mask: $8000
D~7654 3210 (bus conflicts)
---------
.... .PPP
+++- PRG A16..A14 if CPU A14=0
