INES Mapper 111: Difference between revisions
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(copy documentation from forum) |
(note about self-flash) |
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|+-------- 0: red LED is lit, 1: off | |+-------- 0: red LED is lit, 1: off | ||
+--------- 0: green LED is lit, 1: off | +--------- 0: green LED is lit, 1: off | ||
Like [[iNES Mapper 030]], the specific flash used on this board is the SST39SF040. Games are expected to use the chip's self-erase and self-write abilities for game saves. | |||
Information: [http://forums.nesdev.org/viewtopic.php?p=146039 Membler Industries in 2015] - forum post describing the board. | Information: [http://forums.nesdev.org/viewtopic.php?p=146039 Membler Industries in 2015] - forum post describing the board. | ||
Revision as of 20:01, 6 July 2017
Mapper 111 is used by Memblers' Cheapocabra GT-ROM 512k self-flashable board.
It is only well-defined for 512KiB PRG, 32 KiB CHR-RAM, and 4-screen nametables.
Mask: $D000
$5000: [grnc pppp]
|||| ||||
|||| ++++- Select 32 KiB PRG at CPU $8000-$FFFF
|||+------ Select 8 KiB CHR RAM at PPU $0000-$1FFF
||+------- Select 8 KiB nametable and scratch RAM at PPU $2000-$3EFF
|+-------- 0: red LED is lit, 1: off
+--------- 0: green LED is lit, 1: off
Like iNES Mapper 030, the specific flash used on this board is the SST39SF040. Games are expected to use the chip's self-erase and self-write abilities for game saves.
Information: Membler Industries in 2015 - forum post describing the board.
