NINA-003-006

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NINA-003-006
Company American Video Entertainment
Boards NINA-03, NINA-06
PRG ROM capacity 64K
PRG ROM window 32K
PRG RAM capacity None
CHR capacity 64K
CHR window 8k
Nametable mirroring Fixed H or V, controlled by solder pads
Bus conflicts No
IRQ No
Audio No
iNES mappers 079
NESCartDB
iNES 079

iNES Mapper 079 denotes the 72-pin NINA-03 and NINA-06 circuit boards, produced by American Video Entertainment. They only differ in the nature of the CIC — the former always has a microcontroller, the latter may instead have a charge pump. The iNES format designates mapper 79 to NINA-03 and NINA-06.

iNES Mapper 146 denotes the 60-pin Sachen 3015 circuit board, which is functionally identical.

Banks

  • CPU $8000-$FFFF: 32 KB switchable PRG ROM bank
  • PPU $0000-$1FFF: 8 KB switchable CHR ROM bank

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
---- ----
.... PCCC
     ||||
     |+++-- Select 8 KB CHR ROM bank for PPU $0000-$1FFF
     +----- Select 32 KB PRG ROM bank for CPU $8000-$FFFF

Variants

HES/AVE released three multicarts of NINA-06 games (HES 6-in-1, Mind Blower Pak, and Total Funpak (HES)), which is mapper 113. The multicart increases the bankable memory to 256 KiB PRG and 128 KiB CHR, and adds run-time selectable mirroring. iNES Mapper 148 has the same bit assignment in the data latch, but moves the latch register to the CPU $8000-$FFFF register, introducing bus conflicts.

Errata

For mapper 79 but not 146, FCEUX additionally implements a CNROM switch at CPU $8000-$FFFF, apparently to run a few mapper 3 games that are incorrectly set to mapper 79 in GoodNES 3.23b.