INES Mapper 186: Difference between revisions
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[[Category:INES Mappers|186]][[category:Mappers using $4020-$5FFF]] | [[Category:INES Mappers|186]][[category:Mappers using $4020-$5FFF]] | ||
[[iNES Mapper 186]] is used for | [[iNES Mapper 186]] is used for Fukutake Shoten's Japanese edutainment game ''Study Box''. This information is currently identical to FCEUX's source. | ||
Write mask: $FE03 | |||
$4200 write: [RR.. ....] - select one of four 8 KiB PRG-RAM banks | |||
$4201 write: [.... PPPP] - select one of sixteen 16 KiB PRG-ROM banks at $8000 | |||
$4202 write: unknown | |||
$4203 write: unknown | |||
$4200-$43FF: | TCRF claims that there's a printer interface. | ||
$4400-$4FFF: | |||
Read mask: $FEFF | |||
$6000-$7FFF: | $4200, $4201, $4203 read: returns $00 | ||
$8000-$BFFF: | $4202 read: returns $40 | ||
$C000-$FFFF: | $4204-$43FF read: returns $FF | ||
The readable ports may have something to do with what Санчез describes as an "Audio Tape reader" and "power supply condition". TCRF additionally mentions a touchpad interface. | |||
Memory locations: | |||
$4400-$4FFF: 3 KiB PRG-RAM | |||
$6000-$7FFF: 8 KiB PRG-RAM bank (one of four) | |||
$8000-$BFFF: 16 KiB switchable PRG-ROM bank | |||
$C000-$FFFF: 16 KiB fixed PRG-ROM bank (always bank 0) | |||
Having 35 KiB of PRG-RAM seems unlikely, and probable that it overlaps with some of the bankable 32 KiB of RAM. Санчез doesn't say anything more specific, unfortunately. | |||
See also: | |||
* http://cah4e3.shedevr.org.ru/dumping_2005.php | |||
* http://sourceforge.net/p/fceultra/code/HEAD/tree/fceu/trunk/src/boards/186.cpp | |||
* https://tcrf.net/StudyBox | |||
Revision as of 21:43, 15 November 2015
iNES Mapper 186 is used for Fukutake Shoten's Japanese edutainment game Study Box. This information is currently identical to FCEUX's source.
Write mask: $FE03 $4200 write: [RR.. ....] - select one of four 8 KiB PRG-RAM banks $4201 write: [.... PPPP] - select one of sixteen 16 KiB PRG-ROM banks at $8000 $4202 write: unknown $4203 write: unknown
TCRF claims that there's a printer interface.
Read mask: $FEFF $4200, $4201, $4203 read: returns $00 $4202 read: returns $40 $4204-$43FF read: returns $FF
The readable ports may have something to do with what Санчез describes as an "Audio Tape reader" and "power supply condition". TCRF additionally mentions a touchpad interface.
Memory locations:
$4400-$4FFF: 3 KiB PRG-RAM $6000-$7FFF: 8 KiB PRG-RAM bank (one of four) $8000-$BFFF: 16 KiB switchable PRG-ROM bank $C000-$FFFF: 16 KiB fixed PRG-ROM bank (always bank 0)
Having 35 KiB of PRG-RAM seems unlikely, and probable that it overlaps with some of the bankable 32 KiB of RAM. Санчез doesn't say anything more specific, unfortunately.
See also:
