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## .fcm

FCE Ultra Movie File Format

- Updated March 22, 2004

The FCM file format is a somewhat "joined" file format. The first part of a FCM

file will contain an FCS-format state save. After this data, the FCM-specific data

begins, which is being referred to from this point.

Currently, the only supported input scheme for a FCM is four joysticks.

The FCM data consists of a stream of joystick commands:

dLLjjbbb

d = Dummy update, if set. Used to reset frame timestamp.

LL = timestamp length, in bytes(maximum of 3 bytes).

jj = Which joystick(0-3).

bbb = Which button(0-7).

If the dummy update bit is set, a command can also have occurred. Look at the

lower 5 bits:

0 = Just a dummy update.

1 = Reset

2 = Power

The timestamp is stored after the joystick command, in LSB-first format. It is

the number of frames since the last event. A timestamp length of "0" is valid, to

be used when several different buttons need to change state at the same time(same frame,

at least).

Created with the Personal Edition of HelpNDoc: Create cross-platform Qt Help files

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