Difference between revisions of "NES 2.0 Mapper 390"

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(Created page with "{{DEFAULTSORT:390}}Category:Multicart mappers '''NES 2.0 Mapper 390''' denotes the Realtec '''8031''' multicart PCB. ==CHR and Mirroring Select ($8000-$BFFF, write)== Ma...")
 
(It turns out that mapper 390 is a duplicate of mapper 236.)
 
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{{DEFAULTSORT:390}}[[Category:Multicart mappers]]
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#redirect [[INES Mapper 236]]
'''NES 2.0 Mapper 390''' denotes the Realtec '''8031''' multicart PCB.
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==CHR and Mirroring Select ($8000-$BFFF, write)==
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Mask: $C000
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A~FEDC BA98 7654 3210
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  -------------------
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  10.. .... ..M. CCCC
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              |  ++++- CHR A13..A16
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              +------- Mirroring
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                        0=Vertical
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                        1=Horizontal
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==PRG and Mode Select ($C000-$FFFF, write)==
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Mask: $C000
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A~FEDC BA98 7654 3210
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  -------------------
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  11.. .... ..MM Pppp
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              || ++++- PRG A14..A17
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              ++------ PRG Mode
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                        0: UNROM (ppp=7 when CPU A14=1)
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                        1: UNROM, PRG A0-A3 OR'd with solder pad value
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                        2: Unused, maybe NROM-256?
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                        3: NROM-128, ppp unmodified
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Latest revision as of 02:17, 25 April 2021

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