Battlescript variables...

Now... in the ram there's some space for those 20 variables and those few lines makes possible to load/store them all together, as far they are in a single block...

There's space in SRAM but free space in RAM is rather limited, but the memory copy falls into SRAM ($1600 to $1FFF) so you should be fine. You can use the bushido names free RAM if you need a large block.

Shouldn't be possible to expand the number of variables that keep their value after battle, then?

Seee above answer.

The other thing i don't understand is... var 0-3 are restored to 0 after battle, the following 20 vars not... how 'bout all the others, until var 255?

What makes you think there is 255 battle variables? The RAM copy iteration is 20 times but I know only 13 bytes documented. $1DD6 to $1DDC are unlabeled, so they might be unused.

Also you might find this useful, taken from the event bits document:

Code:

RAM    Description
-------------------------------------------------------------------------------
1DC9-D Unused?
1DCE:0 Disables the "M-M-M-MAGIC!?" scene for the M-TekArmor battle (never set)
1DCE:1 Unused?
1DCE:2 Unused?
1DCE:3 Unused?
1DCE:4 Unused?
1DCE:5 Unused?
1DCE:6 Unused?
1DCE:7 Unused?
1DCF:0 Enables the SrBehemoth formation interchange
1DCF:1 (Reserved for additional interchanges.)
1DCF:2 (Reserved for additional interchanges.)
1DCF:3 (Reserved for additional interchanges.)
1DCF:4 (Reserved for additional interchanges.)
1DCF:5 (Reserved for additional interchanges.)
1DCF:6 (Reserved for additional interchanges.)
1DCF:7 (Reserved for additional interchanges.)
1DD0:0 Removes or replaces a number of commands (set for Fanatics' Tower)
1DD0:1 Halves the speed with which the Morph bar is depleted
1DD0:2 Enables permanent Morph status
1DD0:3 Unused?
1DD0:4 Unused?
1DD0:5 Unused?
1DD0:6 Unused?
1DD0:7 Unused? (Cleared in every battle.)
1DD1:0 The party was annihilated
1DD1:1 Enables the "M-M-M-MAGIC!?" scene to be triggered
1DD1:2 Enables the Morph command
1DD1:3 Enables the display of ability points acquired
1DD1:4 The party escaped the battle
1DD1:5 A timer caused a battle or menu to abort
1DD1:6 Enables the display of the battle and menu timers
1DD1:7 The party was engulfed
1DD2:0 Defeated Doom Gaze
1DD2:1 Gau was handed a Dried Meat
1DD2:2 Unused?
1DD2:3 Disables Shadow from leaving randomly
1DD2:4 Stole the clothes of a merchant
1DD2:5 Stole the uniform of an officer
1DD2:6 Unused?
1DD2:7 Unused?
1DD3-4 Doom Gaze's HP
1DD5   Number of victories with Cursed Shld
1DD6-C Unused?