NES 2.0 Mapper 364: Difference between revisions
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{{DEFAULTSORT:364}}NES 2.0 Mapper 364 is used for an early MMC3-based multicart PCB (JY830832C) from J.Y. Company, preceding the [[J.Y. Company ASIC]] | {{DEFAULTSORT:364}}'''NES 2.0 Mapper 364''' is used for an early MMC3-based multicart PCB ('''JY830832C''') from J.Y. Company, preceding the [[J.Y. Company ASIC]]. A compatible PCB has the code '''9053'''. | ||
* ''1994 Super HiK 3-in-1 (JY-007)'' | * ''1994 Super HiK 3-in-1 (JY-007)'' | ||
* ''1996 Super HiK Gold Card (LT-953)'' | |||
==Outer Bank Register ($ | ==Outer Bank Register ($6000-$7FFF)== | ||
Mask: | Mask: $E000 | ||
D~7654 3210 | D~7654 3210 | ||
| Line 13: | Line 14: | ||
| 1: Force PRG/CHR A17 to 0 | | 1: Force PRG/CHR A17 to 0 | ||
+-------- PRG A18 | +-------- PRG A18 | ||
This register is accessible regardless of whether WRAM is enabled in the MMC3 clone's A001 register. It may be possible that there is another bit, unused on the only discovered cartridge using this mapper, that selects the bit value which PRG/CHR A17 is forced to when S=1. | This register is accessible regardless of whether WRAM is enabled in the MMC3 clone's A001 register. It may be possible that there is another bit, unused on the only discovered cartridge using this mapper, that selects the bit value which PRG/CHR A17 is forced to when S=1. Note that unlike many similar MMC3-based multicarts, this register is accessible even when the MMC3's WRAM bit in register $A001 is clear. | ||
==MMC3-compatible registers== | ==MMC3-compatible registers== | ||
Mask: $E001 | Mask: $E001 | ||
Revision as of 16:13, 17 December 2023
NES 2.0 Mapper 364 is used for an early MMC3-based multicart PCB (JY830832C) from J.Y. Company, preceding the J.Y. Company ASIC. A compatible PCB has the code 9053.
- 1994 Super HiK 3-in-1 (JY-007)
- 1996 Super HiK Gold Card (LT-953)
Outer Bank Register ($6000-$7FFF)
Mask: $E000 D~7654 3210 --------- .PSC .... ||+------ CHR A18 |+------- PRG/CHR A17 mode | 0: Preserve MMC3's PRG/CHR A17 | 1: Force PRG/CHR A17 to 0 +-------- PRG A18
This register is accessible regardless of whether WRAM is enabled in the MMC3 clone's A001 register. It may be possible that there is another bit, unused on the only discovered cartridge using this mapper, that selects the bit value which PRG/CHR A17 is forced to when S=1. Note that unlike many similar MMC3-based multicarts, this register is accessible even when the MMC3's WRAM bit in register $A001 is clear.
MMC3-compatible registers
Mask: $E001 See MMC3.
See also
NES 2.0 Mapper 361 describes a simpler variant with a fixed outer bank size.
