Dreamcast Software Development Standards

Dreamcast Software Development Standards/Ver.1.00E

#### 3. Sequences Before Game Start

> The Dreamcast Boot ROM includes an "Auto Loading" setting, which when switched ON (the default), bypasses the Boot ROM menu (multi-player screen in Saturn) to perform a Disc Check (to check whether a disc is a special Dreamcast disc).

> The "Auto Loading" setting is also applied even when Auto Loading is switched OFF as long as the disk door is closed at power-on.

> The following diagram shows a standard sequence from a a Sega brand example.

3.1 Title Display and Demo

> Note: A demo usually runs after the Title Screen, but when it uses a movie such as an original animation that appears before the title, running the demo before the Title Screen may be acceptable.

> Note: When a soft reset is used to bring up the Boot ROM menu (multi-player screen in Saturn), Autoloading does not execute even when it is enabled (ON), so it must wait for menu screen operations.

> Note: When Autoloading is ON, there is no way to force a jump (by any button combination) to the Boot ROM menu after a disc is inserted and the CD door closed, without executing game start.

3.2 Audio Output Settings Upon Loading an Application

> Recommended: Immediately upon loading an application (before the Title Loop starts), the stereo/monaural output setting should be changed to match the Boot ROM settings of the Main Unit.

> Even when there are no 4. Options, an application internally determines the stereo/monaural state, so the application should be set to correspond to the Main Unit's Boot ROM setting.

3.3 Application Loading (1stread file)

> There is no specified maximum loading time, but application loading should be as quick as possible.

> Example:

> - Files used in the Title Screen should not be unreasonably dispersed
>   (because of disc access efficiency).

> - Otherwise, the smaller the file size, the better
>   (to shorten load time).

Dreamcast Software Development Standards

Copyright SEGA ENTERPRISES, LTD, 1998