| Company | Konami |
| Games | 2 in NesCartDB |
| Complexity | ASIC |
| Boards | 352402, 353429 |
| Pinout | VRC7 pinout |
| PRG ROM capacity | 512K |
| PRG ROM window | 8Kx3 + 8K fixed |
| PRG RAM capacity | 8K |
| PRG RAM window | 8K fixed |
| CHR capacity | 256K |
| CHR window | 1Kx8 |
| Nametable mirroring | H, V, or 1, switchable |
| Bus conflicts | No |
| IRQ | Yes |
| Audio | VRC7a only |
| iNES mappers | 085 |
The Konami VRC7 is an ASIC mapper. It is assigned to iNES Mapper 085.
Example games:
See VRC7 pinout for chip pinout.
If CHR-RAM is used instead of CHR-ROM, the banking feature is still functional.
There are two board variations:
Although A5 is wired for sound registers on both ($x028, $x030), in the former board the ceramic resonator necessary for the sound hardware to work is missing.
7 bit 0 --------- ..PP PPPP || |||| ++-++++- Select 8 KB PRG ROM at $8000
7 bit 0 --------- ..PP PPPP || |||| ++-++++- Select 8 KB PRG ROM at $A000
7 bit 0 --------- ..PP PPPP || |||| ++-++++- Select 8 KB PRG ROM at $C000
| Write to CPU address | 1KB CHR bank affected |
|---|---|
| $A000 | $0000-$03FF |
| $A008 or $A010 | $0400-$07FF |
| $B000 | $0800-$0BFF |
| $B008 or $B010 | $0C00-$0FFF |
| $C000 | $1000-$13FF |
| $C008 or $C010 | $1400-$17FF |
| $D000 | $1800-$1BFF |
| $D008 or $D010 | $1C00-$1FFF |
7 bit 0 --------- RS.. ..MM || || || ++- Mirroring (0: vertical; 1: horizontal; || 2: one-screen, lower bank; 3: one-screen, upper bank) |+-------- Silence expansion sound if set +--------- WRAM enable (1: enable WRAM, 0: protect)
$E008, $E010: IRQ Latch
$F000: IRQ Control
$F008, $F010: IRQ Acknowledge
Many VRC mappers use the same IRQ system. For details on IRQ operation, see VRC IRQs.
For details on sound information, see VRC7 audio.
Categories: In NesCartDB, ASIC mappers, Mappers with CHR RAM, Mappers with cycle IRQs, NES 2.0 mappers with submappers