DOS_REF_HEAD

Synopsys

Point at the header data for this file.

The header data area is 8 bytes long and may be used by the caller for any purpose whatsoever. It is available even if the file does not have a header; however, only files with a header and opened with write access will have the header data recorded on disk.

Note that +3 BASIC uses these 8 bytes (see the note under DOS OPEN which gives the details). If creating a file that will subsequently be LOADed within BASIC, then those bytes should be filled with the relevant values.

Entry Parameters

Exit Parameters

If OK:

Carry true

A corrupt

IX = Address of header data

Otherwise:

Carry false

A = Error code

IX corrupt

Always:

BC DE HL corrupt, all other registers preserved.