Sega Saturn Technical Information download pdf (Page 69)

Sega Saturn Software Development Standards, SOA version 2.0 64

3.3 Reset through CD door Open

All cases: similar to the normal case. Jump to the console boot ROM

<multiplayer screen>.

4. Save function

4.1 Saving game data when switching discs

To pass game status over several discs, excluding special cases such

as passwords, the only way is to use the backup RAM to save status.

Therefore, all multi-disc applications using the backup RAM must

include specifications to ensure saving game data when switching

discs.

1) Autosave

In applications where game data are saved frequently through

autosave, game data are saved automatically immediately before

inserting a disc. Also, at certain limited points, when the

application calls for autosave, those points must be saved at the

end of play.

2) Arbitrary save

In applications where the user saves data arbitrarily, game data

must be saved immediately before a disc is inserted.

4.2 When there is no backup RAM space available

As shown in <Basic design>, in dual-disc applications, the backup

RAM must be used. In the case of a single-disc application, even if

there were no game data and available space (Save function cannot

be used), the user still must be able to play the game (appendix 1:

see <Backup Software Development Standards>). In dual-disc

applications, when there are no game data and available space (Save

function cannot be used), the disc 2 game cannot be launched

effectively. Therefore, before starting the disc 1 main game, ensure

the following warning message:

Starting the game in the current state does not

allow full play. Do you still wish to start the

game? Yes No

In applications using the save function for reasons other than moving

to a second disc, ensure the following warning message:

Starting the game in the current state does not

allow saving data. Also, you cannot play the game

in full. Do you still wish to start the game?

Yes No

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Sega Saturn Technical Information Page 69