INES Mapper 113

Mapper 113

Company	unknown
Boards	unknown
PRG ROM capacity	256K
PRG ROM window	32K
PRG RAM capacity	None
CHR capacity	128K
CHR window	8k
Nametable mirroring	H or V, controlled by mapper
Bus conflicts	No
IRQ	No
Audio	No
iNES mappers	113

iNES Mapper 113 denotes the HES NTD-8 circuit board, used to create multicarts made for a bunch of NINA-03/06 games.

Example Games:

• HES 6-in-1
• Mind Blower Pak
• Total Funpak

Banks

• CPU $8000-$FFFF: 32 KB switchable PRG ROM bank (max 256 KB)
• PPU $0000-$1FFF: 8 KB switchable CHR ROM bank (max 128 KB)

Registers

Control Register

This register is located at addresses:

F        bit      0
---- ---- ---- ----
010x xxx1 xxxx xxxx

That is, $4100-$41FF, $4300-$43FF, $45xx, $47xx, ..., $5Dxx, and $5Fxx.

7  bit  0
---- ----
MCPP PCCC
|||| ||||
|+||-|+++-- Select 8 KB CHR ROM bank for PPU $0000-$1FFF
| ++-+----- Select 32 KB PRG ROM bank for CPU $8000-$FFFF
+---------- Mirroring control (0 = Horizontal, 1 = Vertical)

Note the high bit of the CHR select is shifted away from the others.

Variants

This mapper extends the NINA-03/06 with an extra 4 bits of control register. The low 4 bits written behave the same, but the high 4 bits add mirroring control, 1 extra bit of CHR select, and 2 extra bits of PRG select.

References

• NES mapper list by Disch