NeoGeo Development Wiki - User contributions [en]

SYS file

2020-12-28T11:07:44Z

Bb matt:

SYS files hold palette and sprite data for the game logo displayed in the [[CDZ]] menu screen. There's one file for each nationality:

*TITLE_J.SYS
*TITLE_U.SYS
*TITLE_E.SYS

Palettes are stored first, there's space for 45 of them ($5A0 bytes). Following that are 45 sprite tiles in the regular [[SPR file]] format, making a 9*5 tiles (144*80 pixels) logo. Tiles are mapped from left to right, top to bottom.

(See cdrom_load_title in cdrom.c of NEOCD 0.31).

[[File:TITLE_SYS_working.png|620px]]

TITLE_*.SYS file is loaded into memory at $127800 and takes up $1C20 bytes ($5A0 45 palettes + $1680 45 sprite tiles)

If you overwrite this area of memory when you return from the game to the bios main menu it will corrupt:

[[File:TITLE_SYS_corruption.png|324px]]

[[Category:CD systems]]

File:TITLE SYS working.png

2020-12-28T11:04:07Z

Bb matt:

File:TITLE SYS corruption.png

2020-12-28T11:03:50Z

Bb matt:

SYS file

2020-12-28T11:01:06Z

Bb matt:

SYS files hold palette and sprite data for the game logo displayed in the [[CDZ]] menu screen. There's one file for each nationality:

*TITLE_J.SYS
*TITLE_U.SYS
*TITLE_E.SYS

Palettes are stored first, there's space for 45 of them ($5A0 bytes). Following that are 45 sprite tiles in the regular [[SPR file]] format, making a 9*5 tiles (144*80 pixels) logo. Tiles are mapped from left to right, top to bottom.

(See cdrom_load_title in cdrom.c of NEOCD 0.31).

TITLE_*.SYS file is loaded into memory at $127800 and takes up $1C20 bytes ($5A0 45 palettes + $1680 45 sprite tiles)

[[Category:CD systems]]