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Main - ROM Hacking - Is CHR-RAM with CHR-ROM together possible? | New thread | New reply |
infidelity |
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Fuzz Ball Level: 66 Posts: 217/968 EXP: 2362493 Next: 99358 Since: 05-24-07 Last post: 929 days Last view: 785 days |
Is there a way for mmc3, to have chr-ram coexist with chr-rom? In Zelda, at $302 is where you can write to $0-$3F1F in ppu memory. But since i added chr-rom i can no longer manualy write to $0-$1FFF. Is there specific asm i need to write to pull it off? |
never-obsolete |
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Rat Level: 24 Posts: 85/96 EXP: 74323 Next: 3802 Since: 02-22-07 From: Phoenix, AZ Last post: 2567 days Last view: 2567 days |
The TQROM variant supports both at the same time, but I think you lose the option of sram. |
infidelity |
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Fuzz Ball Level: 66 Posts: 218/968 EXP: 2362493 Next: 99358 Since: 05-24-07 Last post: 929 days Last view: 785 days |
I tried mapper 119 yesterday, but my rom crashes after either i press start at the title screen, or during the story when it shows the items in the game. I didnt know if maybe there was a way to disable the header during a jsr, to quickly load chr-ram. |
never-obsolete |
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Rat Level: 24 Posts: 88/96 EXP: 74323 Next: 3802 Since: 02-22-07 From: Phoenix, AZ Last post: 2567 days Last view: 2567 days |
The header for NES games is only there so that emulators and flash-carts can tell what hardware the rom is expecting. As far as the game is concerned, it does not exist.
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infidelity |
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Fuzz Ball Level: 66 Posts: 220/968 EXP: 2362493 Next: 99358 Since: 05-24-07 Last post: 929 days Last view: 785 days |
Yeah i had a feelin on the header. I just figured there was a quick workaround. My chr-rom works fine, just sucks making copies of a ton of gfx, for when i just want to change 2 sprite tiles. Thats why i was trying to use $302 to write to $0-$1FFF. |
NovaYoshi |
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Red Goomba Level: 15 Posts: 27/35 EXP: 14317 Next: 2067 Since: 02-24-11 Last post: 4169 days Last view: 1258 days |
It looks like Namco 106 also supports CHR ROM and CHR RAM at the same time, as an alternative to TQROM, (though it wouldn't be MMC3...)
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infidelity |
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Fuzz Ball Level: 66 Posts: 221/968 EXP: 2362493 Next: 99358 Since: 05-24-07 Last post: 929 days Last view: 785 days |
Thank you never-obsolete & NovaYoshi for the info. :-) |
Main - ROM Hacking - Is CHR-RAM with CHR-ROM together possible? | New thread | New reply |
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