NES 2.0 Mapper 282: Difference between revisions
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* ''1997 Super HIK 21-in-1 (JY-105)'' | * ''1997 Super HIK 21-in-1 (JY-105)'' | ||
* ''1998 Super HIK 5-in-1 (JY-114)'' | * ''1998 Super HIK 5-in-1 (JY-114)'' | ||
Each of them have 1 MiB each of PRG-ROM and CHR-ROM. Register $D003 controls 256 KiB outer banks | Each of them have 1 MiB each of PRG-ROM and CHR-ROM. They use the [[J.Y. Company ASIC]]. Register $D003 controls 256 KiB outer banks. | ||
==Outer Bank Register ($D003)== | ==Outer Bank Register ($D003)== | ||
Mask: $F003 | Mask: $F003 | ||
7654 3210 | 7654 3210 | ||
---- ---- | ---- ---- | ||
| Line 35: | Line 18: | ||
1: Obey bit 3 | 1: Obey bit 3 | ||
PRG ($8000-$8FFF) and CHR ($9000-$AFFF) bank select register bits that select 256 KiB banks are masked off. | |||
For a description of all other registers, see [[J.Y. Company ASIC]]. | |||
=Trivia= | =Trivia= | ||
Some of the multicarts show different version of menu according to what $5000 is returned from the mapper (the value that is read is masked with $C0, so only bits 7 & 6 matters.): | Some of the multicarts show different version of menu according to what $5000 is returned from the mapper (the value that is read is masked with $C0, so only bits 7 & 6 matters.): | ||
1997 Super HIK 18-in-1 (JY-101) | |||
$00 -> 18 in 1 | |||
$40 -> 900 in 1 | |||
$80 -> 1600 in 1 | |||
$C0 -> 6000000 in 1 | |||
1997 Super HIK 21-in-1 (JY-105) | 1997 Super HIK 21-in-1 (JY-105) | ||
| Line 47: | Line 37: | ||
$C0 -> 7000000 in 1 | $C0 -> 7000000 in 1 | ||
{{DEFAULTSORT:282}}[[Category:INES Mappers|282]][[Category:Mappers with ROM nametables|282]][[Category:Mappers with scanline IRQs|282]][[Category:Mappers with cycle IRQs|282]] | |||
Revision as of 15:58, 3 October 2018
NES 2.0 Mapper 282 is used by at least three J.Y. multicarts:
- 1997 Super HIK 18-in-1 (JY-101)
- 1997 Super HIK 21-in-1 (JY-105)
- 1998 Super HIK 5-in-1 (JY-114)
Each of them have 1 MiB each of PRG-ROM and CHR-ROM. They use the J.Y. Company ASIC. Register $D003 controls 256 KiB outer banks.
Outer Bank Register ($D003)
Mask: $F003
7654 3210
---- ----
...M CPPC
| |||+- Select 256 KiB outer CHR-ROM bank
| |++-- Select 256/512 KiB outer PRG-ROM bank
| +---- If bit 4==1: Select 512 KiB outer CHR-ROM bank
+------ 0: Ignore bit 3
1: Obey bit 3
PRG ($8000-$8FFF) and CHR ($9000-$AFFF) bank select register bits that select 256 KiB banks are masked off.
For a description of all other registers, see J.Y. Company ASIC.
Trivia
Some of the multicarts show different version of menu according to what $5000 is returned from the mapper (the value that is read is masked with $C0, so only bits 7 & 6 matters.):
1997 Super HIK 18-in-1 (JY-101) $00 -> 18 in 1 $40 -> 900 in 1 $80 -> 1600 in 1 $C0 -> 6000000 in 1
1997 Super HIK 21-in-1 (JY-105) $00 -> 21 in 1 $40 -> 350 in 1 $80 -> 1200 in 1 $C0 -> 7000000 in 1
