PowerPak: Difference between revisions

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m (iNES Mapper 096 are the two ''Oeka Kids'' games, which happen to use the Oeka Kids tablet as an input device... so referring to the mapper as the input device is kinda confusing.)
(→‎Offical Mappers V1.34: m76 is not the canonical Namco108; m112 isn't particularly related to Namco or Tengen at all.)
Line 99: Line 99:
* MMC3 Clone ([[iNES Mapper 074|74]])
* MMC3 Clone ([[iNES Mapper 074|74]])
* [[VRC1]] ([[iNES Mapper 075|75]])
* [[VRC1]] ([[iNES Mapper 075|75]])
* [[Namcot 108]] ([[iNES Mapper 076|76]])
* NAMCOT-3446 ([[iNES Mapper 076|76]])
* Napoleon Senki ([[iNES Mapper 077|77]])
* Napoleon Senki ([[iNES Mapper 077|77]])
* Holy Diver ([[iNES Mapper 078|78]])
* Holy Diver ([[iNES Mapper 078|78]])
Line 108: Line 108:
* [[Jaleco JF-13]] ([[iNES Mapper 086|86]])
* [[Jaleco JF-13]] ([[iNES Mapper 086|86]])
* [[Jaleco JF-09]] ([[iNES Mapper 087|87]])
* [[Jaleco JF-09]] ([[iNES Mapper 087|87]])
* [[Namcot-3433]] ([[iNES Mapper 088|88]])
* NAMCOT-3433 ([[iNES Mapper 088|88]])
* [[Sunsoft-2]] ([[iNES Mapper 089|89]])
* [[Sunsoft-2]] ([[iNES Mapper 089|89]])
* [[Jaleco JF-19]] ([[iNES Mapper 092|92]], buggy)
* [[Jaleco JF-19]] ([[iNES Mapper 092|92]], buggy)
* [[Sunsoft-2]] ([[iNES Mapper 093|93]])
* [[Sunsoft-2]] ([[iNES Mapper 093|93]])
* [[UN1ROM]] ([[iNES Mapper 094|94]])
* [[UxROM|UN1ROM]] ([[iNES Mapper 094|94]])
* [[NAMCOT-3425]] ([[iNES Mapper 095|95]], buggy)
* NAMCOT-3425 ([[iNES Mapper 095|95]], buggy)
* Oeka Kids ([[iNES Mapper 096|96]], buggy)
* Oeka Kids ([[iNES Mapper 096|96]], buggy)
* [[TAM-S1]] ([[iNES Mapper 097|97]])
* [[TAM-S1]] ([[iNES Mapper 097|97]])
* [[Vs. System]] ([[iNES Mapper 099|99]])
* [[Vs. System]] ([[iNES Mapper 099|99]])
* [[NES-EVENT]] ([[iNES Mapper 105|105]])
* [[NES-EVENT]] ([[iNES Mapper 105|105]])
* [[Namco 118]] / [[Tengen MIMIC-1]] ([[iNES Mapper 112|112]])
* ? ([[iNES Mapper 112|112]])
* [[NINA-003-006]] ([[iNES Mapper 113|113]])
* [[NINA-003-006]] ([[iNES Mapper 113|113]])
* MMC3 [[TKSROM]] / [[TLSROM]] ([[iNES Mapper 118|118]])
* MMC3 [[TKSROM]] / [[TLSROM]] ([[iNES Mapper 118|118]])
Line 147: Line 147:
* Mapper 92 (Jaleco-JF variant) is listed as buggy.
* Mapper 92 (Jaleco-JF variant) is listed as buggy.
* Mapper 95 (Namcot-3425) is listed as buggy.
* Mapper 95 (Namcot-3425) is listed as buggy.
* Mapper 96 ([[Oeka Kids tablet]]) is listed as buggy.
* Mapper 96 (Oeka Kids) is listed as buggy.


== Development limitations ==
== Development limitations ==

Revision as of 19:01, 29 July 2015

The PowerPak is a flash cartridge made by RetroUSB. It uses an FPGA to emulate a wide variety of mappers, allowing the user to store a large collection of ROMs on a single Compact Flash card and run them on an NES. It is widely used by homebrew NES developers to test their software.

In addition to NES ROMs, the PowerPak is able to play FDS disk images, as well as NSF music files.

Famicom expansion audio is supported, and output on the EXP 6 expansion pin on the cartridge connector. A simple modification to the NES allows the expansion audio to be mixed with its output.

Specifications:

  • PRG size: 512 KB (252 KB for NSF)
  • CHR size: 512 KB

Product page: http://www.retrousb.com/product_info.php?products_id=34

Mapper Compatibility

The PowerPak mappers have undergone several revisions, gradually improving compatibility. After official development ceased in 2010, Loopy and TheFox have each created a supplemental set of PowerPak mappers to improve its capabilities.

Power Mappers

TheFox created a set of revised PowerPak mappers to supplement or augment the existing ones, most notably adding a savestate feature.

Download: http://kkfos.aspekt.fi/projects/nes/powerpak/powermappers/

Known problems:

  • MMC3 IRQ can cause shaky status bars and similar problems on some systems.

Loopy's Mappers

Loopy released a set of revised PowerPak mappers in 2011, adding fixes and additional support for several mappers:

Download: https://home.comcast.net/~olimar/NES/powerpak_loopy.zip

Notes:

  • This mapper 4 implementation supports both Startropics and Low G Man.

Offical Mappers V1.34

The last official release of mappers was in 2010. It supports a wide variety of popular mappers.

Download: http://www.retrousb.com/product_info.php?products_id=34

Supported mappers:

Known problems:

  • Mapper 4 does not support Startropics. (See mapper 4 and MMC6.)
  • Mapper 5 (MMC5) is incomplete, and fails to run most MMC5 games.
  • Mapper 23 (VRC2/4 variants) is listed as buggy.
  • Mapper 92 (Jaleco-JF variant) is listed as buggy.
  • Mapper 95 (Namcot-3425) is listed as buggy.
  • Mapper 96 (Oeka Kids) is listed as buggy.

Development limitations

Aside from mapper incompatibility, there are minor differences between running NES programs on the PowerPak versus a traditional single-game cartridge.

  • The PowerPak does not accurately simulate power-on state. Because power-on always boots the PowerPak menu, RAM and various registers will be initialized to a consistent state before any NES ROM is chosen to run. (Reset state, howevere, is not affected by this problem.)
  • Open bus behavior may be different in several memory regions that are used by the PowerPak, but would not be connected on a regular cartridge.
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