Talk:INES Mapper 171: Difference between revisions

From NESdev Wiki
Jump to navigationJump to search
 
No edit summary
 
Line 2: Line 2:


Both [https://github.com/0ldsk00l/nestopia/blob/master/source/core/board/NstBoardKaiser.cpp#L45 Nestopia]'s and [https://github.com/mamedev/mame/blob/master/src/devices/bus/nes/kaiser.cpp#L290 MAME]'s sources claim that mapper 171 = KS7058 is something similar to Sunsoft-1, not MMC1. —[[User:Lidnariq|Lidnariq]] ([[User talk:Lidnariq|talk]]) 16:03, 13 April 2018 (MDT)
Both [https://github.com/0ldsk00l/nestopia/blob/master/source/core/board/NstBoardKaiser.cpp#L45 Nestopia]'s and [https://github.com/mamedev/mame/blob/master/src/devices/bus/nes/kaiser.cpp#L290 MAME]'s sources claim that mapper 171 = KS7058 is something similar to Sunsoft-1, not MMC1. —[[User:Lidnariq|Lidnariq]] ([[User talk:Lidnariq|talk]]) 16:03, 13 April 2018 (MDT)
:I'm basing my description on [https://github.com/asfdfdfd/fceux/blob/master/src/boards/mmc1.cpp FCEUX' source code]. The ROM image writes the same bank data both to MMC1-compatible addresses and those odd F000/F080 addresses. Since the FCEUX source code names a chip ("KS203"), I assume that FCEUX is closer to what the board hardware actually does. [[User:NewRisingSun|NewRisingSun]] ([[User talk:NewRisingSun|talk]]) 16:58, 13 April 2018 (MDT)

Latest revision as of 22:58, 13 April 2018

Differences in documentation

Both Nestopia's and MAME's sources claim that mapper 171 = KS7058 is something similar to Sunsoft-1, not MMC1. —Lidnariq (talk) 16:03, 13 April 2018 (MDT)

I'm basing my description on FCEUX' source code. The ROM image writes the same bank data both to MMC1-compatible addresses and those odd F000/F080 addresses. Since the FCEUX source code names a chip ("KS203"), I assume that FCEUX is closer to what the board hardware actually does. NewRisingSun (talk) 16:58, 13 April 2018 (MDT)