Talk:Comparison of Nintendo mappers
Rare discrete logic
This table describes the mappers as they existed, as opposed to any obvious oversize extensions.
You probably don't actually want to use these.
| iNES | Chips | Max PRG | PRG bank size | Max CHR | CHR bank size | Mirroring | PRG RAM? | Bus conflicts? |
|---|---|---|---|---|---|---|---|---|
| 11/144 | 1 | 128 | 32 | 128 | 8 | V/H hardwired | No | Yes |
| NINA-001 (34) | 6 | 64 | 32 | 64 | 4 + 4 | V hardwired | Yes | No |
| 36 | ? | 128 | 32 | 128 | 8 | V hardwired | Unlikely | Likely |
| 38 | 2 | 128 | 32 | 32 | 8 | V/H hardwired | Impossible | No |
| 70 | 3 | 256 | 16 + 16F | 128 | 8 | V/H hardwired | No | Likely |
| 72 | 4+speech | 256 | 16 + 16F | 128 | 8 | V/H hardwired | No | Yes |
| 77 | 4 | 512 | 32 | 32 + 6RAM | 2 | 4 | No | Likely |
| 78a | 5 | 128 | 16 + 16F | 128 | 8 | V/H switchable | No | Yes |
| 78b | 3 | 128 | 16 + 16F | 128 | 8 | 1 | No | Likely |
| 79 | 2 | 64 | 32 | 64 | 8 | V/H hardwired | No | No |
| 86 | 3+speech | 128 | 32 | 64 | 8 | V/H hardwired | Impossible | No |
| 87 | 2 | 32 | 32 | 8 | V/H hardwired | Impossible | No | |
| 89 | (2)† | 128 | 16 + 16F | 128 | 8 | 1 | No | Yes |
| 92 | 5+speech | 256 | 16F + 16 | 128 | 8 | V/H hardwired | No | Yes |
| 93 | (2)† | 128 | 16 + 16F | 8‡ | V/H hardwired | No | Yes | |
| 94 | 2 | 128 | 16 + 16F | 8 | V/H hardwired | No | Yes | |
| 96 | 3 | 128 | 32 | 32RAM | 4 + 4F / 16 | V/H hardwired | No | Likely |
| 99 | 0* | 40 | 8 + 24F | 16 | 8 | 4 | No | No |
| 101 | 2? | 32 | 32 | 8 | V hardwired | Impossible | No | |
| 140 | 3 | 128 | 32 | 128 | 8 | V/H hardwired | Impossible | No |
| 152 | 3 | 128 | 16 + 16F | 128 | 8 | 1 | No | Likely |
| 168 | 7 | 64 | 16 + 16F | 64RAM | 4F + 4 | V hardwired | No | No |
| 184 | (3)† | 32 | 32 | 4 + 4 | V/H hardwired | Impossible | No |
† Mappers 89, 93, and 184 exist as a single IC, however their functions are trivially described using a small number of 7400-series ICs, and likely contain multiple silicon dice that were wire bonded together in the same package.
‡ Mapper 93 is technically the same 89 other than mirroring, but it only commercially existed using 8kB of CHR-RAM
* the Vs System distributed its original games as five or six 8 KiB ROMs, and decoding on its mainboard allowed banking of CHR like CNROM. It is a little disingenuous to claim that 0 ICs were necessary for banking since the same functionality is not possible on a Famicom, however, banking was incrementally free.
I don't really like the mapper wizard (for one thing it doesn't seem to mention how much PRG RAM you need, and doesn't have a lot of choices), which is one of the reasons why I made User:Zzo38/mapperlist. However, that list is incomplete; can you help with it? Perhaps more information would be useful in there too, such as the number of 74xx series ICs, etc, and then we can improve it and use that list of mappers to make up a lot of things, such as SQL queries to select one, or a wiki article listing them in various tables, etc. --Zzo38 (talk) 17:25, 23 June 2013 (MDT)
