This patch rewrites the game's save file handling by using DMA for saving and loading, leading to the most efficient handling. As a bonus, it also frees up the 141 bytes of RAM at $7E:1F49.
NOTE: You must apply this patch after you use Lunar Magic to modify any of the level's level flags on the overworld -- LM doesn't take into account the fact that $1F49 is never being used anymore.
Read the readme for information on including an address to be saved to SRAM/BWRAM.
This version now allows addresses to have default values.
The BWRAM is included because due to the nature of the sa-1 rom, SRAM doesn't exist, so use that instead of SRAM on a sa-1 rom, not SRAM.
Update: Fixed for compatibility with Lunar Magic v2.53.
changelog:
v1.3
--------------------
LX5's bwram_plus:
Fixed a bug init would happen after intro level's load, leading to weird issues with initialized RAMs. Example: if you remove the code that takes care of initializing manually the life counter and try to do that with bwram's default values, you will see your life counter suddenly jump from 1 to the right value. And many other issues of the same variation.
I also brought the load routine to the same hijack, so now the game chooses whether to init or load, instead of trying to do both. In v1.2, I had added a lock so that wouldn't happen, I removed it in this version. Both routines are running at the same hijack sram_plus uses now.
v1.2
--------------------
MarioE's sram_plus:
Fixed a bug it would restore a piece of code from the original game on top of a LM hijack (message sprite fix (shift+f8)) that would send you to the wrong OW submap.
v1.1
--------------------
LX5's bwram_plus:
Fixed a bug the patch would load a save even if there was no save to be loaded (values would be loaded with FF or whatever else was in the tables).
Fixed a bug the patch would write garbage to address+1, according to the tables, so dl $4013C7 : dw $0001 would write to 4013C7 and 4013C8.
If you're a beginner like me, you're having trouble using this patch. Because of this I will leave the code of the RAM addresses, which I used in my hack!
Code
sram_table: dl $7E1EA2 : dw $008D ;Default Code
dl $7E0019 : dw $0001 ;Mario's Powerup
dl $7E0DB9 : dw $0001 ;Luigi's Powerup
dl $7E0DC2 : dw $0001 ;Mario's Item Box
dl $7E0DBD : dw $0001 ;Luigi's Item Box
dl $7E0DBE : dw $0001 ;Mario's Lives
dl $7E0DB5 : dw $0001 ;Luigi's Lives
dl $7E13C7 : dw $0001 ;Mario's Yoshi Color
dl $7E0DBB : dw $0001 ;Luigi's Yoshi Color
dl $7E0DBF : dw $0001 ;Mario's Coins
dl $7E0DB7 : dw $0001 ;Luigi's Coins
dl $7E0F34 : dw $0003 ;Mario's Score
dl $7E0F37 : dw $0003 ;Luigi's Score
dl $7E0F48 : dw $0001 ;Mario's Bonus
dl $7E0F49 : dw $0001 ;Luigi's Bonus
dl $7E0DC1 : dw $0001 ;Yoshi Overworld
dl $7E1F2F : dw $000C ;Yoshi Coin Collected
.end
sram_defaults: db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00,$00
db $00,$00,$00,$00,$00,$00,$00
To use, add the code in the sram_table.asm file, in the corresponding location. This code has multiple RAM addresses, while using the code your game will be able to save powerup, item box, yoshi, yoshi coin, coin, score, and bonus score. If you want to remove some code, just delete the line of code and the number of bytes corresponding to the deleted code.
Remember that for the patch to work you need to apply the patch posted by Tattletale and that the default code line should never be deleted.
For those wanting to save powerups, coins, lives, yoshi and stuff like that:
First things first, those values are getting saved and loaded properly, issue is, the game hard-resets these values after load save - happens at $009E1C. I didn't add a patch to ignore that inside this pack because it's not in this pack's responsibility to do that.
Here's a patch that ignores the hard-reset:
Made by Ladida.
Issue is though, when you do that, the game also lets you bring the showoff level yoshi to the intro level and then to the OW. So make sure to initialize and save this RAM 7E0DC1, like this:
for normal ROMs:
Code
sram_table:
dl $7E0DC1 : dw $0001
sram_defaults:
db $00
for sa-1:
Code
bw_ram_table:
dl $400DC1 : dw $0001
bw_ram_defaults:
db $00
Also make sure to initialize / save whatever else you are using.
EDIT 2019/01/13:
If you also want to save stars and score, change that patch to:
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