NES 2.0 Mapper 342
NES 2.0 Mapper 342 is used for the homebrew COOLGIRL multicart. In addition to native registers, it can simulate about 25 commercial-era mappers on a hardware level. It can address up to 128 MiB of PRG-ROM, 512 KiB of CHR-RAM, and 32 KiB of WRAM. Like the COOLBOY mapper that inspired it, CHR-RAM is filled with pattern data copied from PRG-ROM by the multicart menu after a game has been selected. Its UNIF board name is just COOLGIRL.
Range: $5000-$5FFF
Mask: $5007
All registers are $00 on power-on and reset.
7 bit 0
---- ----
PPPP PPPP
|||| ||||
++++-++++-- PRG base offset (A29-A22)
7 bit 0
---- ----
PPPP PPPP
|||| ||||
++++-++++-- PRG base offset (A21-A14)
7 bit 0
---- ----
AMMM MMMM
|||| ||||
|+++-++++-- PRG mask (A20-A14, inverted+anded with PRG address)
+---------- CHR mask (A18, inverted+anded with CHR address)
7 bit 0
---- ----
BBBC CCCC
|||| ||||
|||+-++++-- CHR bank A (bits 7-3)
+++-------- PRG banking mode (see below)
7 bit 0
---- ----
DDDE EEEE
|||| ||||
|||+-++++-- CHR mask (A17-A13, inverted+anded with CHR address)
+++-------- CHR banking mode (see below)
7 bit 0
---- ----
CDDE EEWW
|||| ||||
|||| ||++-- 8KiB WRAM page at $6000-$7FFF
|+++-++---- PRG bank A (bits 5-1)
+---------- CHR bank A (bit 8)
7 bit 0
---- ----
FFFM MMMM
|||| ||||
|||+ ++++-- Mapper code (bits 4-0, see below)
+++-------- Flags 2-0, functionality depends on selected mapper
7 bit 0
---- ----
LMTR RSNO
|||| |||+-- Enable WRAM (read and write) at $6000-$7FFF
|||| ||+--- Allow writes to CHR RAM
|||| |+---- Allow writes to flash chip
|||+-+----- Mirroring (00=vertical, 01=horizontal, 10=1Sa, 11=1Sb)
||+-------- Enable four-screen mode
|+-- ------ Mapper code (bit 5, see below)
+---------- Lockout bit (prevent further writes to all registers)
| Code | iNES mapper number(s) and name(s) | Flags meaning | Notes |
| ====== + ================================== + ===================================== + ========================================= |
| 000000 | 0 (NROM) † | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000001 | 2 (UxROM) † | 0 - enable "Fire Hawk" mirroring for | Mapper 2 is fully compartible with mapper |
| | 71 (Codemasters) * | mapper 71 (Codemasters) | 71 but "Fire Hawk" only uses mirroring |
| | 30 (UNROM-512) | 1 - Enable one screen mirroring | control. UNROM-512 self-writable feature |
| | | select for mapper 30 (UNROM-512) | is not supported |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000010 | 3 (CNROM) † | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000011 | 78 (Irem) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000100 | 97 (Irem's TAM-S1) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000101 | 93 (Sunsoft-2) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000110 | 163 (Nanjing) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 000111 | 18 (Jaleco SS 88006) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001000 | 7 (AxROM) † | 0 - disable mirroring control, used | Can be oversized to 512 KiB. |
| | 34 (BNROM, NINA-001) * | to select mapper 34 instead of 7 | iNES Mapper 034 is used to designate both |
| | | | the BNROM and NINA-001 boards but only |
| | | | BNROM is supported |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001001 | 228 (Action 52) | | Only Cheetahmen II is supported |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001010 | 11 (Color Dreams) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001011 | 66 (GxROM) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001100 | 87 * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001101 | 90 (J.Y. Company) * | | Partial support only, can be used for |
| | | | "Aladdin" and "Super Mario World" only. |
| | | | "Super Mario World" requires to enable |
| | | | accurate IRQs and multiplier (disabled by |
| | | | default) |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001110 | 65 (Irem's H3001) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 001111 | 5 (MMC5) * | | Experimental partically support, can be |
| | | | used for "Castlevania 3 (U)" only |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010000 | 1 (MMC1) † | 0 - enable 16KiB of WRAM | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010001 | 9 (MMC2) * | | |
| | 10 (MMC4) * | 0 - 0=MMC2, 1=MMC4 | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010010 | 70 * | 0 - 0=70, 1=152 | |
| | 152 * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010011 | 73 (VRC3) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010100 | 4 (MMC3/MMC6) † | 0 - use mapper 118 (TxROM) | Can be oversized up to 2 MiB |
| | 118 (TxROM) * | 1 - use mapper 189 | |
| | 189 * | 2 - use mapper 206 | |
| | 206 (Namco, Tengen, others) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010101 | 112 | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010110 | 33 (Taito) * | 0 - 0=33, 1=48 | |
| | 48 (Taito) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 010111 | 42 (FDS conversions) * | | Interrupts disabled by default |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011000 | 21 (VRC2/VRC4) * | 2,0 - A0 and A1 lines configuration: | |
| | 22 (VRC2/VRC4) * | 0,0 - like mapper 21 | |
| | 23 (VRC2/VRC4) * | 0,1 - like mapper 22 | |
| | 25 (VRC2/VRC4) * | 1,0 - like mapper 23 | |
| | | 1,1 - like mapper 25 | |
| | | 1 - divide CHR bank select by two | |
| | | (VRC2a, mapper 22) | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011001 | 69 (Sunsoft FME-7) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011010 | 32 (IREM G-101) * | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011011 | 79 (NINA-03/06) | | |
| | 146 (Sachen 3015) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011100 | 133 (Sachen) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011101 | 36 (TXC's PCB 01-22000-400) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011110 | Reserved | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 011111 | 184 (Sunsoft-1) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 100000 | 38 | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 100001 | Reserved | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 100010 | 75 (VRC1) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 100011 | 83 | 0 - DIP switch 0 | Partial support, submapper 1 requires |
| | | 1 - DIP switch 1 | 512 KiB of CHR RAM |
| | | 2 - use submapper 1 | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 100100 | 67 (Sunsoft-3) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| 100101 | 89 (Sunsoft-2 on Sunsoft-3 PCB) | | |
| ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- |
| ...... | Reserved | | |
† - very popular mappers, can't be disabled in config
* - enabled by default in config
Power-on/reset state: A=0, B=~2, C=~1, D=~0
| Code | $8000 | $A000 | $E000 | $C000 | Notes |
| ==== + ===== + ===== + ===== + ===== + ======================================== |
| 000 | A | C | UxROM, MMC4, MMC1 mode #3, etc. |
| ---- + ------------- + ------------- + ---------------------------------------- |
| 001 | C | A | Mapper 97 (TAM-S1) |
| ---- + ------------- + ------------- + ---------------------------------------- |
| 010 | Reserved | |
| ---- + ----------------------------- + ---------------------------------------- |
| 011 | Reserved | |
| ---- + ----- + ----- + ----- + ----- + ---------------------------------------- |
| 100 | A | B | C | D | Universal, used by MMC3 mode 0, etc. |
| ---- + ----- + ----- + ----- + ----- + ---------------------------------------- |
| 101 | C | B | A | D | MMC3 mode 1 |
| ---- + ----- + ----- + ----- + ----- + ---------------------------------------- |
| 110 | B | Mapper 163 |
| ---- + ----------------------------- + ---------------------------------------- |
| 111 | A | AxROM, MMC1 modes 0/1, Color Dreams |
Power-on/reset state: A=0, B=1, C=2, D=3, E=4, F=5, G=6, H=7
| Code | $0000 | $0400 | $0800 | $0C00 | $1000 | $1400 | $1800 | $1C00 | Notes |
| ==== + ===== + ===== + ===== + ===== + ===== + ===== + ===== + ===== + ======================================== |
| 000 | A | Used by many simple mappers |
| ---- + ------------------------------------------------------------- + ---------------------------------------- |
| 001 | Special mode | Used by mapper 163 |
| ---- + ----- + ----- + ----- + ----- + ----- + ----- + ----- + ----- + ---------------------------------------- |
| 010 | A | C | E | F | G | H | Used by MMC3 mode 0 |
| ---- + ----- + ----- + ----- + ----- + ----- + ----- + ----- + ----- + ---------------------------------------- |
| 011 | E | F | G | H | A | C | Used by MMC3 mode 1 |
| ---- + ----- + ----- + ----- + ----- + ------------- + ------------- + ---------------------------------------- |
| 100 | A | E | Used by MMC1 |
| ---- + ----------------------------- + ------------- + ------------- + ---------------------------------------- |
| 101 | A/B | E/F | MMC2/MMC4, switched by tiles $FD or $FE |
| ---- + ------- ----- + ------------- + ------------- + ------------- + ---------------------------------------- |
| 110 | A | C | E | G | Used by many complicated mappers |
| ---- + ----- + ----- + ----- + ----- + ----- + ----- + ----- + ----- + ---------------------------------------- |
| 111 | A | B | C | D | E | F | G | H | Used by very complicated mappers |