NES 2.0 Mapper 515: Difference between revisions

From NESdev Wiki
Jump to navigationJump to search
(Document a few mappers with numbers 256+ already used and discussed on the forum)
 
No edit summary
 
(4 intermediate revisions by 3 users not shown)
Line 1: Line 1:
iNES 2.0 Mapper 515 is used for ''Family Noraebang'', a Korean karaoke cartridge that uses UNROM-style CHR banking, has provisions for an expansion cartridge, an ADC for Microphone input, and a clone of the Yamaha [https://en.wikipedia.org/wiki/Yamaha_YM2413 YM2413] chip for expansion audio.
iNES 2.0 Mapper 515 is used for 패밀리 노래방 ''Family Noraebang'', a Korean karaoke cartridge that uses UNROM-style PRG banking, has provisions for an expansion cartridge, an ADC for Microphone input, and a clone of the Yamaha [https://en.wikipedia.org/wiki/Yamaha_YM2413 YM2413] chip for expansion audio: the K-663A.


== Banks ==
== Banks ==
Line 10: Line 10:
                         $C000-$FFFF is always last bank of internal ROM
                         $C000-$FFFF is always last bank of internal ROM


The board does not seem to suffer from bus conflicts. The existing ROM images are arranged similarly to [[INES Mapper 088]]: The last 1 MiB of PRG-ROM are the main cartridge, the first (total PRG-ROM size minus 1 MiB) are the expansion cartridge.
The board does not seem to suffer from bus conflicts. The existing ROM images are arranged similarly to [[INES Mapper 188]]: The last 1 MiB of PRG-ROM are the main cartridge, the first (total PRG-ROM size minus 1 MiB) are the expansion cartridge.


== Expansion sound ==
== Expansion sound ==
Line 16: Line 16:
   W 6000: YM2413 index
   W 6000: YM2413 index
   W 6001: YM2413 data
   W 6001: YM2413 data
  R 6000: YM2413 read back test register contents


Note that the board does not allow the 2A03 audio to be mixed with the YM2413 output.
Note that the board does not allow the 2A03 audio to be mixed with the YM2413 output.

Latest revision as of 18:40, 30 August 2018

iNES 2.0 Mapper 515 is used for 패밀리 노래방 Family Noraebang, a Korean karaoke cartridge that uses UNROM-style PRG banking, has provisions for an expansion cartridge, an ADC for Microphone input, and a clone of the Yamaha YM2413 chip for expansion audio: the K-663A.

Banks

  • CPU $8000-$BFFF: 16 KB switchable PRG ROM bank
  • CPU $C000-$FFFF: 16 KB PRG ROM bank, fixed to the last bank

PRG-ROM bankswitching

Mask $E00F:
  W 8000: [RBBB BBBB] - R:0-select external ROM; 1-select internal ROM; B-select bank at $8000-$BFFF
                        $C000-$FFFF is always last bank of internal ROM

The board does not seem to suffer from bus conflicts. The existing ROM images are arranged similarly to INES Mapper 188: The last 1 MiB of PRG-ROM are the main cartridge, the first (total PRG-ROM size minus 1 MiB) are the expansion cartridge.

Expansion sound

Mask: $E003:
  W 6000: YM2413 index
  W 6001: YM2413 data
  R 6000: YM2413 read back test register contents

Note that the board does not allow the 2A03 audio to be mixed with the YM2413 output.

Microphone input

Mask: $E003:
   R 6003: [D... ....] - SPI (ADC) data
Mask not yet known:
   W C002: [S... ....] - SPI (ADC) chip select
   W C003: [K... ....] - SPI clock / ADC conversion clock

See also

http://forums.nesdev.org/viewtopic.php?f=9&t=16124