No - I can not confirm this.XavSnap wrote:Hi,
The ".81" files is the true Mirror of Zx81's tape programs, it include de Bloc header "MYZX81NAMe", where the low case "e" is a reversed character to end the name header bloc.
".81" files equal : <name header> & "P" memory file.
In a "P" file, the name tag is lost...
I collect ZX81 programs since 2 years when walking through the internet and I have about 2/3 .p files and 1/3 .81 files. They all have the same structure and no additional information about the filename. You have always the identical signature $BC, $21, $18, $40 at offset $002F - so there is no bloc header in a .81 file - at least no .81 file I have. You are sure for the WAV file which contains a file name coded as audio and you maybe sure for tape archives like -tzx or .tap files.
Anyway EightyOne takes any .81 file without filename information. If you save explicitly one file from the archive to disk as .T81 (which is a different name to .81) there is the file name supported and also the size. The file begins with "EO81" followed by the filename. I didn't find the named block header "MYZ81NAMe" in those .T81 files.