INES Mapper 186: Difference between revisions

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(incorporate information from various sources.)
m (fix braino)
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TCRF claims that there's a printer interface.
TCRF claims that there's a printer interface.


  Read mask: $FEFF
  Read mask: $FFFF
   $4200, $4201, $4203 read: returns $00
   $4200, $4201, $4203 read: returns $00
   $4202 read: returns $40
   $4202 read: returns $40

Revision as of 21:45, 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: $FFFF
 $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: