Sega Saturn Technical Information download pdf (Page 67)

Sega Saturn Software Development Standards, SOA version 2.0 62

conflicts regarding 1. Basic design and 2> Title sequence, refer to

Recommended specs in 5.).

2) Continuous Start from the Disc 2 Content with Respect to Disc 1

Regardless of the launch from disc 1, when starting the game from

disc 2 through continuous start, before switching discs, a screen

display must prompt the start from disc 2.

(The user selects Continue from Title within disc 1.)

1. Reading Continue information from the backup RAM.

(The user selects and determines saved data from the disc 2

content.)

2. A display on the game screen prompts Start from disc 2.

2.3 Switching from disc 2 to disc 1

As shown in <Basic design>, in the case of Game Over, Continue,

and Game Clear, make sure to return to the disc 2 application start

point (Sega logo). As we shall discuss later, also in the case of

Control Pad <A+B+C+START button>, return to <Title Screen> on

disc 2. As a result, moving from disc 2 to disc 1 is a case that only

occurs when regardless of a launch from disc 2, there is no saved data

to start from the disc 2 content, or the launch occurs from disc 2, but

the game data (saved data) started from the disc 1 content is selected

by the user. Further explanation will follow in 4> Incorrect disc

switching.

• When there is a game link in switching from disc 2 to disc 1,

make sure to switch discs in compliance with 2> Switching from

disc 1 to disc 2 and 1) Ending disc 1 play.

2.4 Incorrect disc switching

Since the multiplayer screen is called into the process, other

applications discs cannot be switched incorrectly. Therefore, incorrect

disc switching can only be determined and the user can be notified in

the following 1) and 2) cases:

1) The launch is from disc 2, but there is no save data.

When disc 2 is inserted while there is no game data (saved data)

used per application, or when regardless of a launch from disc 2,

there is no game data (saved data) started from the disc 2 content,

display the following warning message to prompt the user to

switch discs.

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Sega Saturn Technical Information Page 67