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| author | Alexey 'Cluster' Avdyukhin <clusterrr@clusterrr.com> | 2022-12-23 16:46:56 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-12-23 16:46:56 +0300 |
| commit | cc4c45d2afe15e9fbe93b3047423a1e237fdb9d4 (patch) | |
| tree | 059d6f88d3fdc06e9ba997b559c766e8fe1aeb8e | |
| parent | 569246f6265afbc78d56740fb897a1b81c1f532a (diff) | |
Update README.md
| -rw-r--r-- | README.md | 17 |
1 files changed, 9 insertions, 8 deletions
@@ -3,7 +3,7 @@ The goal of the project is to create a open source Famicom cartridge that will not be too expensive and can contain up to ~700 games of various mappers. ## Registers -Range: 5000-$5FFF +Range: $5000-$5FFF Mask: $5007 @@ -140,7 +140,8 @@ All registers are $00 on power-on and reset. | 010001 | 9 (MMC2) | | | | | 10 (MMC4) | 0 - 0=MMC2, 1=MMC4 | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | -| 010010 | 152 | | | +| 010010 | 70 | 0 - 0=70, 1=152 | | +| | 152 | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | | 010011 | 73 (VRC3) | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | @@ -154,13 +155,13 @@ All registers are $00 on power-on and reset. | 010110 | 33 (Taito) | 0 - 0=33, 1=48 | | | | 48 (Taito) | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | -| 010111 | 42 (FDS conversions) | 0 - switch A0 and A1 lines: | | +| 010111 | 42 (FDS conversions) | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | -| 011000 | 21 (VRC2/VRC4) | 0=A0,A1 like VRC2b (mapper #23), | | -| | 22 (VRC2/VRC4) | 1=A1,A0 like VRC2a(#22), | | -| | 23 (VRC2/VRC4) | VRC2c(#25) | | +| 011000 | 21 (VRC2/VRC4) | 0 - switch A0 and A1 lines: | | +| | 22 (VRC2/VRC4) | 0=A0,A1 like VRC2b (mapper 23), | | +| | 23 (VRC2/VRC4) | 1=A1,A0 like VRC2a(22), VRC2c(25) | | | | 25 (VRC2/VRC4) | 1 - divide CHR bank select by two | | -| | | (mapper #22, VRC2a) | | +| | | (VRC2a, mapper 22) | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | | 011001 | 69 (Sunsoft FME-7) | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | @@ -173,7 +174,7 @@ All registers are $00 on power-on and reset. | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | | 011101 | 36 (TXC's PCB 01-22000-400) | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | -| 011110 | 70 | | | +| 011110 | Reserved | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | | 011111 | 184 (Sunsoft-1) | | | | ------ + ---------------------------------- + ------------------------------------- + ----------------------------------------- | |